Why don’t all public buildings have green roofs? Or all large private buildings (e.g. businesses)? Would this be a good idea? What would it take to make it happen and to make it worthwhile?

Art, Science, Action: Green Cities Re-imagined
Regularly, we feature a Global Roundtable in which a group of people respond to a specific question in The Nature of Cities.
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Hover over a name to see an excerpt of their response…click on the name to see their full response.
Maryam Akbarian, Tehran Roof gardens have to become an accessible and economically native item that enhance buildings’ spatial quality and operating income.
Wolfgang Ansel, Nürtingen Carrots and sticks—the combination of regulations, incentives, and public relations is a successful recipe for municipal Green Roof policies.
Nathalie Baumann, Basel Cities can require much more green infrastructures on buildings via policies and laws combined with subsidies campaigns.
Michael Berkshire, Chicago The City of Chicago is estimating that over 80 percent of its 509 green roofs were built because they were required by the Sustainable Development Policy.
Rebecca Bratspies, New York Green roofs are environmental justice in action.
Amy Chomowicz, Portland Two key ingredients for a green roof program are policies and education.
Andrew Clements, Corinth Scaling green roofs to the world with safe, cost-effective, user friendly OS could make them accessible to your granny.
Karla Dakin, Denver Why should a developer spend money on a green roof? What is the long-term return rate? How does it benefit investment? The answers can be found water, healthcare, and community/jobs.
Stuart Gaffin, New York I see no necessity for hot urban surfaces any more, what with new cool roofing technologies and options (including green roofs) becoming well-known, popular, sometimes required in building codes, and increasingly comparable in cost to traditional membranes.
Dusty Gedge, London All public and private buildings should have green roofs, but the natural benefits of soil and vegetation don’t quite fit into the current market model.
André Gonçalves, Goiânia The challenge is to get people involved. Civil society can play an important role in the establishment of public policies for green roofs.
Ulrike Grau, Mexico City Green roofs on every single public building require a joint effort of all city government departments, not only the Environmental Secretary.
Angela Loder, Denver Legislation and links to resilience and biophilia will move green roofs into the future.
Amosh Neupane, Middlebury One solution to the lack of green space in New York is the installation of green roofs on all of the City’s public schools—we did it at our high school.
Matt Palmer, New York To greatly increase the number of green roofs, we need convincing evidence of the benefits, realistic comparison of the costs in comparison to other technologies, and a solid sense of the long-term return on investment.
Kerry Ross, Calgary Despite acceptance of the multiple benefits of green roofs elsewhere, costs, misperceptions and a protracted approvals process hinder greater uptake in Calgary.
Kaveh Samiei, Tehran The worst trend underway in vertical greenery in Iran is limiting ourselves to an ornamental view—an orchard on a rooftop!
Julie Santos, London & Buenos Aires Governments, business leaders, and communities alike need intense and constant education regarding green roofs and all the advantages these bring to the built environment, let alone our wellbeing.
Kate Scherer, New York One solution to the lack of green space in New York is the installation of green roofs on all of the City’s public schools—we did it at our high school.
Mark Simmons, Austin Green roofs in temperate climates are too easy. I suggest that, for hot climates, the barriers of plant palette and growing media need to be significantly modified. 
Kevin Songer, Jacksonville Green roofs provide critical habitat niches for the survival of imperiled plant and animal species.
Christine Thuring, Sheffield For widespread green roof implementation to be worthwhile, a future-oriented approach with a committed ecological vision is crucial.
David Maddox

about the writer
David Maddox

David loves urban spaces and nature. He loves creativity and collaboration. He loves theatre and music. In his life and work he has practiced in all of these as, in various moments, a scientist, a climate change researcher, a land steward, an ecological practitioner, composer, a playwright, a musician, an actor, and a theatre director. David's dad told him once that he needed a back up plan, something to "fall back on". So he bought a tuba.

Introduction

Many of the benefits of green roofs are appreciated and increasingly well-studied: stormwater management, mitigation of heat islands, insulation, biodiversity, increased longevity of the waterproof membrane, green space for enjoyment, and so on.

With all these benefits, why don’t more buildings—especially large ones—have green roofs?

Shouldn’t they?

Should all public buildings and large new construction be required to have green roofs?

Answering these questions obviously requires complicated technical and political calculations about the real and perceived values of green roofs, what they cost to build and maintain, and whether greens roofs are “worth it”.

So, would programs to significantly expand the use of green roofs make sense? If so, how can we better make the case—say, with better data or more effective outreach—to elected officials, to developers, or to the public that green roofs belong on all buildings?

Maryam Akbarian

about the writer
Maryam Akbarian

Maryam is a landscape architect in Tehran. Plants and planting design are her most favorite subjects.

Maryam Akbarian

Invest to make greener

Creating green shells, including green roofs and walls on the outer sides of buildings, causes many well studied and approved positive effects on ecosystems and the quality of urban life that are mentioned in the introduction article of the roundtable. Although these features have irreplaceable values in the fields of sustainability and climatic adaptation, something more is needed to convince private investors to add these living shells to their buildings—something made of continual economic profits and involving the creation of vendible value added parts in the building.

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A roof garden in Tehran.

Among two main types of green roofs, due to their functional and spatial characteristics, extensive ones are often used in large urban public buildings and shells. In Tehran, governmental organizations such as municipalities are most often sponsors of these projects. Intensive and semi-intensive green roofs, which are used more in large and medium-sized privately owned buildings, are the main subject of this article.

In Tehran, private investors own a significant proportion of commercial and office buildings and almost all residential on both large and medium scales. The use of green covers in buildings and the creation of green roofs is growing rapidly, but is not popular enough yet. Roof gardens in residential buildings tend to be added as a fancy item intended to increase luxury, just like a rooftop pool, a billiard room, or a high-tech home theater.

The main obstacles in using green roofs in buildings in Tehran are as follows:

  • High cost: The main reasons that green roofs are expensive are imported green roof materials and the lack of true competition in the pricing of goods and services, which is rooted in the novelty of green roofs. Shortages of materials at affordable prices and skilled construction teams lead to unreasonable prices for each square meter; consequently, most small building owners (due to Tehran’s small-scale urban subdivisions, this group of buildings is numerous) do not have the financial ability and justification to have roof gardens.
  • Poor quality construction process
  • Operating problems: Unfortunately, a significant portion of the green roofs in Tehran are designed and constructed by the trading companies that supply green roofs materials. Most of them don’t have any landscape architects or other related professionals to consult during the design and construction process. Obviously and naturally, their main concern is the business. Sometimes, a quick access to sale step means finishing the design of a 1,000 square meter roof garden in just 3 hours, drawing only a few lines on the existing building’s roof plan. Most of these green roofs have operating problems in many parts such as insulation, irrigation, planting maintenance, and even, in some rare cases, structural stability. All these transform the process of designing, constructing, and operating green roofs into a challenging item which owners and construction investors are hardly likely to do again.
  • High maintenance: Green roofs in hot and dry weather have significant benefits for projects; meanwhile, they have higher maintenance costs that can result in a challenging situation if construction and design teams don’t pay enough attention to materials, planting, soil composition, and other issues. For example, people’s planting taste is a bit different in Tehran. They prefer annual blooming flowers in all seasons instead of the appearance of perennials and permanent bushes. In fact, they like a spring landscape much more than autumn or winter ones. This is a combination of culture and aesthetics and affected by context. In roof gardens, the need to use perennials and planting maintenance hardships require planting designers to reach an optimum point between technical requirements and owners’ desires.
  • Safety: Roof gardens, especially intensive ones, are often joined with other recreational and entertaining functions. When you send users to the highest parts of buildings, which are most attractive at their edges, you must pay attention to safety systems seriously; this is even more critical in public buildings for both designers and investors.
  • Lack of supporting laws: Legislative support for private investors, who dedicate a part of saleable building spaces to green areas such as green roofs and spend money to make the outer shells of buildings green, can help to popularize green roofs faster. At this time, there are no codified and inclusive laws related to this in Tehran.

To give cities greener top views, roof gardens and green shells of all kinds have to become an accessible and economically native item that, along with proper construction and maintenance costs, enhance buildings’ spatial quality and operating income.

Wolfgang Ansel

about the writer
Wolfgang Ansel

Wolfgang Ansel is Director of the International Green Roof Association (IGRA), a network for the worldwide promotion of the ecological green roof idea.

Wolfgang Ansel

Many municipalities in Germany are using regulations to make Green Roofs mandatory in new urban development plans. The background of this policy is that the city officials believe in the environmental benefits of Green Roofs for urban ecology. The regulation policy generates a kind of “flat rate” for the German Green Roof market. As a result, several million square meters of Green Roofs are installed every year. And Green Roofs have become an accepted standard in the building industry over the last three decades.

Can the German Green Roof experience be duplicated in other countries? Yes and no. In a lot of countries, environmental regulations in the building sector are not well accepted. Therefore, an exact transfer is not possible. Cities should also develop an individual Green Roof policy in light of their financial and human resources and their specific urban ecological problems. There is a saying that many roads lead to Rome. And this is also true for the different ways to establish a successful Green Roof policy.

What helps to speed up this process and to avoid setbacks is information exchange. The policy toolbox with the main ingredients for a successful Green Roof promotion campaign is already available and has been tested. Among the established instruments are regulations (“sticks”), incentives (“carrots”), and public relation activities in different specifications. The International Green Roof Association (IGRA), the City of Portland (Environmental Services) and the International Federation of Landscape Architects (IFLA) created a platform to facilitate information exchange in the field of Green Roofs Policies, the “International Green Roof City Network” (www.igra-world.com).

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In Stuttgart / Germany Green Roofs are mandatory for new flat roof buildings. Copyright IGRA.

From my point of view, one of the most important things for the spread of Green Roofs is to show that the roof is a valuable open space. Imagine a new building with a room that is locked up and can’t be used by anyone. Of course the investor would agree that this is a waste. But if we look at aerial pictures of cities we can see a lot of unused open space on top of flat roofs. People seem to accept this waste of space as normal. If we can make them see the development potential, we achieve a great deal.

Nathalie Baumann

about the writer
Nathalie Baumann

Nathalie Baumann is an urban ecologist and lecturer, researcher, and consultant in the Green Space Development Research Group at the Environment and Natural Resource Sciences Institute of the Department Life Sciences and Facility Management in Zurich (Zurich University of Applied Sciences).

Nathalie Baumann

I’m sitting in a bar, 32 floors above ground level, called Bar Rouge and enjoying the view over the city where I grew up and still live: Basel, Switzerland. The people who are with me are stupefied by the view: there are loads of green roofs around this city. About 23 percent of the flat grey roof surfaces are greened, maybe even more nowadays. Just below this view, the last big surface of approximately 20,000 m2 was greened one year ago: one of many combination roofs with Solar Panels (PV) and green roofs: a Biosolarroof (www.biosolarroof.com). There are not only big public surfaces that have been greened, but many private buildings are visibly green from above as well.

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View from Bar Rouge (in the exhibition tower) to the green roof and Solar panel roof (PV) of the Messehalle (exhibition Hall) just below the view point. 16,000 m2, completed in 1999. The whole roof is greened, as well as below and behind the panels. It’s a combination of LandArt with ecology and renewable energy—there are no limits! Photo: Carole Blomjous (2015)

How can this be possible?

It was an engagement of the city authorities, their politicians, and citizens which started nearly 20 years ago. Their engagement was to make a change to save money on energy consumption and to promote biodiversity, which brought them to one of several solutions: biodiverse, extensive green roofs.

The second step to this engagement was to launch a subsidy campaign in 1996/1997 with good public communication in different media to inform house owners (public and private) about this solution; those who renovated their roofs or built a new one within this subsidy year could apply for funds (20-30 Swiss francs/m2). This money was coming from a city fund, which is fed from a special tax for energy consumption paid by individuals—part of citizens’ commitment to support innovative and low energy consumption techniques. In 2001, this engagement resulted in a simple paragraph in the Law of Construction for the city, which said: “…each flat roof, public or private, new, built, or renovated, has to be greened.” Any construction project receives documents and manuals providing information about how quality of a design, choice of substrate (local and natural), and choice of indigenous and regional plants can be fulfilled. This documentation was provided by us: the Green Roof Competence Centre of the Zurich University of Applied Sciences.

Basel is one of the densest cities in Switzerland and doesn’t have a square meter left open to be built on. Therefore it’s a waste to have empty grey spaces—as many cities of this world do—which could serve as replacement habitats and ecological compensation to promote biodiversity.

It is absolutely possible to green many more roofs. It’s not a Swiss phenomenon; it’s about the commitment of decision makers, planners, and politicians to make a change and to take a step in order to be sure that future buildings are greened—it doesn’t matter if it’s public or private buildings or the size of the surfaces. Cities can make the change and have to do it! The example of Basel shows this possibility explicitly: after the implementation of the law, a green business developed and supported the local economy (small companies) in developing well. It’s in the cities hands!

oup of French politicans from the city of Paris. Delegates and deputy mayor. very interested audience. credits Karine Peiger
A green roof visit up on the roofs of Basel with delegates from the Parisian government, planners, scientists, and a National Assembly member from France. We explainined to them how a biodivers green roofs looks and how to install it and maintain it. We also let them meet with the local government ministers who brought the green roof change into Basel 20 years ago. Photo: Karine Peiger (2013)

Cities can require much more green infrastructures on buildings via policies and laws combined with subsidies campaigns. Parallel to that, it is important to offer possibilities of trainings for professionals (planners, roofers, landscapers, etc.) to learn how to install green roofs right—just to put green on a building doesn’t mean that it will promote biodiversity. This is all possible because there are already some experts around the world who have been to Switzerland and the UK in order to see the best practices in these countries and to learn how to do it.

It’s not necessary nowadays to re-invent everything; there is already a long history of well-designed, biodiverse green roofs in Europe. Just get in contact with us.

Michael Berkshire

about the writer
Michael Berkshire

Michael has a Masters Degree in Urban and Regional Planning and has been with the City of Chicago for the past 12 years creating and implementing public policy and incentives that encourage sustainable urban development.

Michael Berkshire

City of Chicago
Chicago’s City Hall green roof.

Beginning with the iconic, 20,000+ square foot prairie planted on the roof of City Hall, the City of Chicago has been placing green roofs on municipal buildings since the beginning of the new millennium. The latest count is one dozen public buildings with green roof systems ranging from shallow tray systems to 20-inch deep, fully-integrated systems.

Once it was proven that green roofs would work, flourish, and perform, the City began requiring green roofs on private projects. Since 2004, all buildings that are (1) receiving financial assistance from the City, (2) part of a planned development, and (3) located on the Chicago waterway system or near Lake Michigan must have a green roof.

This is a requirement of the Chicago Sustainable Development Policy, a summary matrix of which can be seen here. According to satellite imagery from 2013,  there were 509 green roofs in Chicago totaling almost 5.6 million square feet. Based on a previous analysis, the City is estimating that over 80 percent of those green roofs were built because they were required by the Sustainable Development Policy.

Rebecca Bratspies

about the writer
Rebecca Bratspies

Rebecca Bratspies is a Professor at CUNY School of Law, where she is the founding director of the Center for Urban Environmental Reform. A scholar of environmental justice, and human rights, Rebecca has written scores of scholarly works including 4 books. Her most recent book is Naming Gotham: The Villains, Rogues, and Heroes Behind New York Place Names. With Charlie LaGreca-Velasco, Bratspies is co-creator of The Environmental Justice Chronicles: an award-winning series of comic books bringing environmental literacy to a new generation of environmental leaders. The ABA honored her with its 2021 Commitment to Diversity and Justice Award.

Rebecca Bratspies

Green Roofs Are Environmental Justice In Action

Urban areas are replete with environmental burdens. The air is polluted, the water is polluted, and green spaces are few and far between. It is the urban poor that suffer the most. Poor communities, especially poor minority communities, bear the lion’s share of environmental burdens while having the fewest resources for promoting resilience. If investment were apportioned on a “biggest bang for the buck” basis, cities would be pouring money into solving environmental problems in these communities. A good place to start would be with green roofs.

Growing concerns about climate change add an additional impetus for green infrastructure. In New York City, buildings are responsible for the vast majority of carbon emissions. Anything that reduces energy consumption in those buildings will also reduce the building’s carbon footprint. This set of concerns prompted Chicago to launch an extensive green roofs project.

Green roofs are, of course, just one aspect of the green infrastructure needed to transform cities into sustainable, low-carbon communities. Yet, even considered in isolation, green roofs might make a big difference. Green roofs can filter airborne pollutants, offset urban heat island effects, reduce carbon emissions, provide flyways for migratory species, in addition to reducing energy consumption.

Despite the clear benefits from urban green roofs, cities have been slow to invest themselves, or to mandate green roofs for private development. And, when such investments do occur, they rarely are directed at the poor communities most in need of the benefits that green roofs bring.

There are many implacable social and political forces behind this lack of investment. However, there are also a set of legal and regulatory barriers. Much of the impetus for green roofs, along with other green infrastructure, emerges from the Clean Water Act’s mandate to manage stormwater and to control combined sewer overflows. Grey infrastructure, in the form of pipe and concrete, has an established regulatory effectiveness. Green infrastructure is less certain in the near term. Lingering information and performance gaps mean that adopters may be taking additional risks. With fines for violations ranging in the thousands per day, it is a safer design choice to choose concrete pipes, even though green roofs and green infrastructure offer so many additional environmental benefits.

With thought, regulatory mandates could be revised to promote, rather than inhibit, green infrastructure.

Nearly a decade ago, the New York Department of Design and Construction recognized that per unit area, green roofs save over twice the energy as cool roofs. However, the cost is very high. As a result, there has been no official recommendation for putting green roofs on the roughly 4,000 buildings New York City owns. The One City Built to Last Initiative commits the City to invest in energy efficiency, clean energy sources, and installation of many leading edge technologies. Despite a commitment to “lead by example” the Initiative contains virtually no discussion of green roofs, focusing instead on cool roofs, solar power and energy efficiency.

For private real estate, the Initiative requires information gathering and energy benchmarking, but does not include any green infrastructure mandates. New York City does offer a tax abatement to property owners that install green roofs. The tax benefit, along with the marketing cachet of green living, might be enough to tempt private developers to incorporate this element into new designs.

That still leaves the environmental justice question—how to direct the investment in green infrastructure toward those most burdened and vulnerable communities. Sometimes, all it takes is political vision.

In terms of making an impact, the New York City Housing Authority (NYCHA) is an obvious target. NYCHA is the single biggest landlord in New York City, overseeing 2,553 residential buildings that are home to nearly 5 percent of New York City’s residents. NYCHA’s combined real estate holdings are roughly three times the size of Central Park. Anything that happens at NYCHA would have a huge impact on the City, and would make an important statement to the rest of the world. Green roofs at NYCHA housing could be a bellwether for use of green roofs elsewhere, and might make a real environmental difference for the City’s poorest and most vulnerable residents. In short, NYCHA might achieve environmental goals while advancing environmental justice. This potential for synergy is not lost on NYCHA residents, and environmental justice advocates.

Unfortunately, no such plan exists. NYCHA is chronically underfunded, and has been running a budget deficit. Mayor DeBlasio’s Next Generation NYCHA proposal call for reducing energy costs by making basic investments in upgraded equipment. These investments will certainly make an environmental difference, but it misses the opportunity to do more. Green roofs could make a significant contribution to Next Generation NYCHA by dramatically lowering heating and cooling costs, while also addressing other environmental justice concerns in these communities, providing flyways for migratory birds, improving air quality, and diverting runoff from the City’s overtaxed combined sewer overflow system.

Small, incremental steps are happening. For example, Corsi Houses Community Center in Manhattan already has a green roof and Bronx River Houses has a blue roof, installed as part of a green infrastructure pilot project.

Schools and other public buildings are also inviting targets for bring the benefits of green infrastructure into all the City’s communities. PS118 in Queens is home to a blue/green roof investigational study. The Parks Department headquarters on Randall’s Island has one of the largest green roofs in the City.

While green roofs require commitment in terms of vision, policy, and personnel, they have the potential to transform the City.

Amy Chomowicz

about the writer
Amy Chomowicz

Amy Chomowicz is a board member of the Green Roof information Think-tank (GRiT). GRiT is a Portland non-profit that provides education and outreach to support the use of green roofs.

Amy Chomowicz

Portland’s ecoroof program began in 1996, when Tom Liptan put an ecoroof on his garage. (An ecoroof is an extensive green roof.) Tom, now retired, worked for the City of Portland Bureau of Environmental Services (BES), and his co-workers, bureau leaders, and, ultimately, elected officials were all receptive to his continuous advocacy for ecoroofs. In 2008, Sam Adams, who was Portland’s Mayor at the time, launched the 5-year Grey to Green (G2G) Initiative. G2G fully funded an ecoroof program along with several other watershed restoration initiatives and programs. Through G2G, BES offered a cash incentive of $5/sq ft and significantly expanded our technical assistance.

So, why don’t all public buildings have green roofs? Or all large private buildings (e.g. businesses)?

Retrofitting existing buildings with a green roof can be a challenge. From our experience in Portland, most existing buildings cannot hold the additional weight of a green roof without structural upgrades. From 2008 to 2013, BES evaluated 18 buildings in Portland to determine if they could be retrofitted with an extensive green roof. Results showed that three buildings could be retrofitted with no or minor adjustments. The remaining 15 structures would require extensive structural modifications to be retrofitted. It wouldn’t make sense to incur the substantial cost of structural modifications just for an ecoroof. However, if an owner is embarking on a building renovation anyway, it is a good opportunity to upgrade the structure so it can be retrofitted with an ecoroof.

The lack of local data can be an obstacle to implementing a green roof program. One of the unique aspects and an essential element of Portland’s program is data BES gathered from monitoring several Portland ecoroofs over the past 10 years. The data show ecoroofs retain 50 percent of the rain that falls on them and cut peak flows by 90 percent. Having local performance data demonstrated the benefits of ecoroofs to local decision makers and provided information our engineers can use for modeling and design.

Is this a good idea?

Green roofs make sense from many perspectives. They provide many environmental and human health benefits as well as adding green jobs to local economies. BES manages stormwater, so green roofs, with their stormwater management capabilities, make a lot of sense for our system needs. BES uses green roofs to keep stormwater out of our combined and separated sewer system to preserve pipe capacity, help reduce local flooding, and reduce basement sewer backups. Also, when space on the ground is limited, an ecoroof may be the best way to manage stormwater sustainably.

Cities need to grow by developing in ways that restore the environment and protect human health. The negative impacts of current construction practices need to be mitigated, and new construction should have a net benefit to environmental and human health. Green roofs are one aspect of restorative development which provides multiple benefits to the buildings themselves, as well as the community.

What would it take to make it happen and be worthwhile?

Two key ingredients for a green roof program are policies and education. Jurisdictions such as Chicago, Seattle, and Washington D.C., that have strong policies and requirements are seeing a booming green roof industry. Portland’s ecoroof policies are embodied in our Stormwater Management Manual, which requires onsite stormwater management for new construction, the Green Building Policy for city-owned facilities, and financial incentives such as reduced stormwater fees.

With or without a requirement, education is critical. Teaching building owners about ecoroof benefits helps them understand what they will gain and makes them more likely to ask for an ecoroof. We conducted ecoroof seminars and vendor fairs that attracted as many as 500 attendees. We also provide technical workshops and materials for the design and construction community. To respond to requests for a low-weight, low-cost, low-maintenance, and no irrigation ecoroof, we developed the red cinder ecoroof design.

The Green Roof information Think-tank (GRiT) is a discussion forum that is unique to Portland. GRiT’s membership includes design and construction professionals, agency staff, landscapers, roofers, irrigation contractors, and interested citizens. GRiT supports education and outreach, and GRiT members consult on projects and they advocate for green roof policies, codes, and programs.

Resources

Monitoring reports: http://www.portlandoregon.gov/bes/36055

Red cinder guidelines: http://www.portlandoregon.gov/bes/article/464519

Technical manuals, cost/benefit report, etc.: http://www.portlandoregon.gov/bes/44422

Andrew Clements

about the writer
Andrew Clements

Andrew holds two patents for Greek-appropriate green roofs and is particularly interested in water-wise, natural, ecosystem development in hot cities such as Athens, as well as the challenges of working in a seismic region. Landmark projects include The Greek Treasury building in Constitution Square, Athens.

Andrew Clements

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All projects and photos by http://oikosteges.gr.

On a plane trip to Turkey from Greece five or so years ago I was seated next to the CFO of a global corporation and we got chatting about cricket. The conversation inevitably turned to what we each ‘do’. When I told him that I worked on green roofs and showed him photographs of projects, he responded with a surprised ‘Wow, what a great idea’ and said that he had never seen or heard about the practice. This was an eye opener for me. I think green roofers, like all professionals, misjudge the level of penetration into the consciousness of humanity of their field of expertise. We live in a rock pool at the edge of the world’s oceans, in other words, thinking we are in the sea and that all the other creatures know of our presence. We are still an embryo of an industry in comparison with other fields.

FullSizeRender-6The reasons for this are varied and numerous. First of all, although the practice of putting plants on roofs is literally as old as the hills, in its modern form, it is quite a recent development in many countries of the world. And in many countries of the world, there are formidable technical challenges to safe, cost effective green roofing. In a hot, dry, seismic region such as Greece, for example, these technical challenges include severe weight restrictions, use (or preferably not) of summer irrigation, hot gale force summer winds, and monsoon-type torrential downpours. Add to this the financial difficulties most of the post-2008 world faces—and, in particular, debt sunk places such as Greece face—and it is not hard to realise why we have not yet seen much wider implementation of green roofs, despite the increasing attention, interest, and huge efforts made by many of us to network and communicate. Finally, although modern green roof technology is well developed and does tend to function as it is designed, the general perception of putting plants on a roof immediately draws comments like ‘Won’t the roof leak?’ or ‘Won’t the roof collapse?’

Whether large-scale implementation of green roofs is a good idea is a no brainer for me. The plethora of well-known benefits of green roofs makes this technology an essential component of sustainable building practices going forward. The question really is, how do we make this happen?

FullSizeRender-7Firstly, green roofs have got to become accessible to everyone. Most current technology is the green roof equivalent of MSDOS to information technology, in my opinion. Green roofs need an Apple type OS or a MS Windows OS to make them user friendly to the masses. We need green roofs that can be understood by a Yiayia (Granny) in a Greek village.

Furthermore, green roofs have got to become far more affordable to the masses in our cash-strapped world economies. A green roof should cost the same, if not less, than a conventional roof on a new build and should be equivalent in cost to thermal insulation on a retrofit if we want to see mass adoption. Moreover, a green roof must have similar or lower maintenance costs to a conventional roof. If the end user has to shell out for summer irrigation water, weeding, fertilisers, and pesticides, we are unlikely to see wider implementation beyond the novelty-seeking architect or the hard core eco-enthusiast.

Finally, we need to get green roofs into the human mindscape as the obvious default method of roofing. This requires the continual, relentless, communication and networking that this site has afforded green roofers with this roundtable and that countless green roof activists and enthusiasts from around the world now engage in on social media and through other communication outlets.

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Karla Dakin

about the writer
Karla Dakin

Karla Dakin combines her landscape architecture expertise—she holds a masters degree in landscape architecture from the University of Colorado, Denver—with fifteen years of experience in the art worlds of New York City, San Francisco, and Los Angeles. Dakin’s past work in the art world gives her insights into the creativity of art and design.

Karla Dakin

The motivating question here seems like an odd one given the context of our ingrained, American, individualist sentiment. America is not Switzerland or Germany after all, whereby government fiat mandates the inclusion of green roofs. And yet, all the time I get asked some form of this same question. It usually goes like this, “How can we convince people, i.e. those with money and control, that they need to include green roofs in the planning of their public and commercial buildings.” The answers go way beyond the up front costs—the main reason green roofs do not get built in this country.

History, albeit a brief green roof history in the US, is a good place to start for answers. We can study our past to see how we coerce controlling parties to build green roofs, reflecting on “carrots” (i.e. expediting of permits if you include a green roof or stormwater credits), “sticks” (Environmental Protection Agency [EPA] fines for polluted waterways that led the charge for many green roofs in Portland, Oregon and in the Washington D.C. area), and “visionaries” like Mayor Daley of Chicago bringing to fruition his city greening initiatives. Does history teach us that we must wait for the next disaster or the arrival of a forceful politician?

Not to overstate the obvious, but the primary component of American democracy is capitalism and that is about money, baby. Money, money, money. Why should a developer spend money on a green roof? What is the long-term return rate? How does it benefit investment? Can’t they just use some other less costly implementation to get around stormwater mandates?

Perhaps what we need to do in the U.S. is lay out the truth and consequences, like a showdown at the OK Corral. Make the reason for green roofs all about money—the money “you” will make. We ought to drive the conversation not only about present but also about future costs.

WATER: Oil and gas might be cheap now and projected, long term low costs look rosy, but what about the cost of water, now and in the future? The paucity of water in the far west United States will drive water costs up but so will the abundance of polluted water across the continent. Polluted stormwater is coloring and will color the conversation. Green roofs can pull the stormwater filtration card when we need to clean our polluted water or slow down our stormwater.

HEALTHCARE: How about healthcare costs? Anyone who pays for their own insurance can attest to the rising monthly payments. Corporations pay huge health insurance costs for their employees. Do they know about the rising rates of asthma caused by pollution in the cities? How about job stress and its related medical expenses? Now it’s time to pull out recent studies by people like Dr. Angela Loder (also in this panel), whose research reveals how green roofs can mitigate these costs.

COMMUNITY/JOBS: Apparently crime pays the wrong people. How much money do we spend as a citizenry on crime? Our prisons are overcrowded and costing us billions. Have we looked at green roofs as an answer to this expenditure? People like Ben Flanner and Majora Carter can explain the cost benefit ratio of introducing people who never have seen a garden to the world of growing their own food on a roof. Young people get exposed to a world beyond their dreams, where they might find a different profession. We also need to educate the public on the research that shows increased real estate values around green roofs, not only from the ecosystem services angle but also from the community-forming angle.

Stuart Gaffin

about the writer
Stuart Gaffin

Stuart Gaffin is a Research Scientist at the Center for Climate Systems Research, Columbia University.

Stuart Gaffin

Why don’t all public buildings have green roofs?

I recall a statement I read from Art Rosenfeld and colleagues of the Lawrence Berkeley Lab Heat Island Group that paraphrased as ‘… the era of the dark asphaltic roof should be phased out …’ I agree with the statement, as I see no necessity for such hot urban surfaces any more, what with new cool roofing technologies and options (including green roofs) becoming well-known, popular, sometimes required in building codes, and increasingly comparable in cost to traditional membranes. Public buildings should go green, especially when the old roof is up for retirement. As to why they currently don’t, such technologies are probably still novel in many respects to building managers who often just opt for the same old, same old.

Or all large private buildings (e.g. businesses)? 

Private owners may have more leeway about building decisions and less red tape or bureaucracy to go through, so they have even less excuse to not go green. Plus, they have more personal incentive to enhance building amenties and cut down on energy costs, especially if they live there. These amenities include novel new green spaces with potential for such popular residential activities as gardening or small-scale food or herb production—I once heard that gardening is the number one hobby in America.

Would this be a good idea? 

Yes, for the reasons just cited and the public benefits from urban heat island mitigation, stormwater management, and ecosystem services. If we debunk the remaining misconceptions about green roofs (costs, maintenance burden, and the winter heat penalty, especially), that can increase the demand and market share of these systems, and thus bring down costs, as has happened apparently in Germany, the undisputed leader in the field; the price there is ~40 percent of the US cost (Phillipi, 2006).

What would it take to make it happen and to make it worthwhile?

The appeal of living green infrastructure with multiple functions, as opposed to single-purpose gray infrastructure, is growing within cities. Indeed, cities, as they are in so many ways, are the incubators for innovation and leading the way, especially on climate change policy, both in carbon emission mitigation and adaptation. It is an exciting time for many urban disciplines and urban environmental research that will shape how cities evolve, function, and look over the next decades and beyond.

Reference: 

Phillipi, Peter. (2006). How to Get Cost Reduction in Green Roof Construction. Greening Rooftops for Sustainable Communities. Retrieved here.

Dusty Gedge

about the writer
Dusty Gedge

Dusty Gedge is a recognised authority, designer, consultant and public speaker on green roofs. Dusty has also been a TV presenter on a number of UK shows and makes his own Green Intrastructure and Green Roof and Nature Videos. He is an avid nature photographer and social networker posting on Twitter, Facebook and G+.

Dusty Gedge

All public and private buildings should have green roofs. This is more than a good idea. It is an intelligent one. All the benefits that vegetation and soil bring to both cities and the buildings themselves is where we need to be going to help our cities adapt to climate change. When ones consider a city, such as London, where I have estimated that over 10 million m2 of existing roof space could be greened tomorrow, why aren’t we green roofing like crazy?

The problems is that the natural benefits of soil and vegetation don’t quite fit into the current market model. The cost-benefit analysis of the payback time of a green roof really doesn’t stack up if you are private owner of a building. Therefore, there is no fiscal stimulus to entertain the idea. I have met many a building manager who has bought into the idea, but who just can’t justify the costs. Furthermore, many existing buildings, both in the public and the private sector, are restricted because of weight issues. Notwithstanding this technical issue, there is huge potential in cities across the globe if the fiscal challenges can be overcome.

The main driver for the delivery of green roofs on buildings can only be through policy initiatives from city and regional authorities. Linz in Austria was one of the first in the world to start this process back in 1984 and has also provided funding to deliver the green roofs.

When you visit the industrial areas of Linz, one can easily tell when which buildings were built before 1984 and those that were built after. Soil and vegetation bedecks the newer buildings. The developers and owners are unlikely to have delivered green roofs without the policy and the initiatives from the City.

Since London initiated its policy, green roofs have blossomed over the capital. Prior to 2008, the Mayor encouraged the use of green roofs. This was like asking commuters politely to pay for the London congestion charge. Most wouldn’t. Since 2008, there has been a planning ‘expectation’ for green roofs. My city now has over 175,000 m2 in the Central Activity Zone. Encouragement would never have achieved that.

Whilst helping to form the policy, I travelled widely in Europe and North America to research green roof policy for a technical report I was writing for the London Government and England’s Environment Agency. Switzerland, in many ways, has the best approach, although Germany is seen as the world leader. Swiss cities take a more holistic approach in my view—some cities performance criteria requires native wildlife flowers. Specific seed mix characteristics are desired and this ecological approach is now enshrined in the Swiss green roof standard (one of only two such standards in the world (the other being the Austrian Standard).

This is important as, commercially, the early innovators were actually interested in supplying a broader landscape than the current sedum extensive green roofs seen across Europe and North America. This is an important elemental detail within the question. What do we want on our public and private buildings to deliver when it comes to green roofs?

Sadly, green roofs over the last 30 years have been pared down to their bare essentials.

Green roofs are almost like an oak tree, full of promise, stripped to their bare bones—a barkless trunk akin to a telegraph pole. And this is not naïve—I know how the construction industry works, when it comes to green roofs and I know how landscape architects and architects respond to the issue. The original Swiss and German green roofs were ‘nature’ roofs supplied by commercial companies. No romance there. In the last twenty years, the main driving force for green roofs has been stormwater, which is engineer-lead, not ecologist-lead. To achieve designs that attain stormwater and building physic requirements, architects want a neat product that ticks the boxes. The green roof industry, often berated, can only supply what they are asked for.

So the early green roof suppliers, who may well have wanted to supply ‘nature’ roofs, have been constrained to supply the simplest homegenous systems throughout the world. When Swiss cities and my city ask for wildflowers and provisions of biodiversity as part of the policy agenda, the architects have to respond and the green roof industry can return to its roots of providing sustainable, resilient vegetation that is locally appropriate.

Policy is probably the only way to get not only more public and private buildings to have green roofs, but also to refine and re-invigorate how green roofs are delivered. I can already hear the naysayers—after 20 odd years promoting green roofs with a reasonable degree of success, I am used to the grumbles in the wings and the dress circle! But if we really do think green roofs are a good idea, which they most definitely are, it is up to the nature movement in cities to take a robust stand. It needs to demand an approach that is in keeping with our specific city and it needs not to be cowered by the might of the design and construction professionals.

One final point also needs to be made; how we incentivise more green roofs on existing buildings. This is the real challenge currently facing our cities. My answer is simple—if only building owners had to pay a rent to the ‘original’ landlord. The landlord (nature) would probably spend the rent on returning our cities to some semblance of what was there before buildings usurped the natural environment. And it would be at roof level, as most cities are nearly 80 percent roofscapes.

Sadly, I can’t see this happening in the near future. However, we can make policies deliver for both natural and human inhabitants of cities. To that end, cities need to set the agenda, not the design and construction professionals.

André Gonçalves

about the writer
André Gonçalves

André Gonçalves is co-founder of Sobreurbana, a startup company dedicated to the activation of public spaces and promotion of urban culture in Goiânia, Brazil.

André Gonçalves

Our planet is getting more urban every day. Since 2008, more than half of the world’s population has been living in cities that keep growing faster and faster as the countryside shrinks. This tendency, dosed with some lack of planning, greed, and absence of knowledge or ethics, have already provoked disastrous consequences for Earth, most of them irreversible. Urban heat islands, floods, air and water pollution, droughts, and lack of biodiversity are some of the climate change phenomena that we feel more and more strongly everywhere in the world.

Green roofs are a solution to mitigate these problems. They can be effective at cleaning the air, retaining rainwater, isolating buildings, and bringing beauty and biodiversity to the neighborhood, among many other advantages that contribute to well being and life quality. So the question is quite pertinent: why don’t all buildings, or at least public buildings, or large private buildings, have green roofs?

The immediate answer would be: costs. Building a green roof is more expensive than building a conventional one, besides which it needs maintenance, which also has its costs. However we may question this accounting: as a green roof isolates the building, it contributes in saving energy; as it cleans the air, it saves money that would be spent in health; as it manages stormwaters, it prevents floods and saves private vehicles and public equipment from getting damaged. Thus, green roofs, like other urban green infrastructures, are not luxuries, but investments that actually bring economic benefits: financially, by cutting off expenses that would be spent in energy, health, restoration work, etc…; but also in other non-accountable advantages such as life quality and air quality, which are increasingly becoming luxury goods in the real estate industry.

Politicians tend to manage their agendas according to their mandates and green roofs are long-term investments whose return can’t be seen in a spreadsheet. So why would they prioritize green roofs when they could invest their efforts in other areas with more visibility and immediate returns? I believe the answer resides in civil society. Politicians are elected by citizens, who are increasingly informed, connected, and committed to environmental and urban causes. All over the world, movements of citizens concerned with improving their cities and their public spaces have been rising. These movements, and civil society in general can and must pressure their leaders to start thinking in the long-term and working for their neighborhoods, their cities, their planet. When we talk about politicians, we can also point out developers and construction professionals: if their clients are truly concerned about these issues, they will build and sell them green buildings.

The challenge is to raise awareness and get people involved. We now live in a time where citizens are gaining more and more power: information is increasingly accessible, processes are increasingly transparent. Citizens elect their politicians to represent them. If they feel misrepresented, they will charge for it.

JanesWalk
A Jane’s Walk in Goiânia.

In Goiânia, Sobreurbana has been promoting Jane’s Walks since 2013: free community walks, based on Jane Jacobs’s ideas and aiming to bring people out to the streets to discover, observe, and discuss their city and their neighborhoods. Sobreurbana also produced Goiânia’s Urban Ecology Week, joining specialists, researchers, professionals, politicians, and citizens to share their knowledge on that subject. These activities aim to raise awareness about urban issues and to discuss possible solutions.

Also in Goiânia, a movement leaded by the construction industry organized public sessions to debate and ideate the future of the city in the long term. The purpose was to create a city development council composed of different actors in the civil society as a means to pressure politicians to make the right choices for the city. On the environmental panel, it was unanimous that green roofs are necessary in a future sustainable city.

We believe that these kinds of initiatives, promoted by different sectors of society, can play an important role in the establishment of public policies for green roofs.

Ulrike Grau

about the writer
Ulrike Grau

Ulrike Grau has been involved in green roof design and the setup of plant trials in Spain, Puerto Rico and Mexico. She is currently working at the agricultural Chapingo University in Mexico.

Ulrike Grau

My gut response is “Sure, in an ideal world, all public and private buildings would have a green roof.” While it is relatively easy to require a green roof in every new construction, things seem to be a bit more difficult for the thousands of already existing buildings. You’ve got the building up and running, have fulfilled all the legal requirements, so why spend extra money on something that mainly “only” benefits the environment?

I have been living in Mexico for 15 years and things have moved forward considerably over this period. In 1998, the first green roofs were installed on public buildings in Mexico City, on the initiative of the city government, later followed by urban public schools. As in most cities, the environmental regulations of Mexico City oblige all new constructions to compensate their impacts through a series of different programs and specific actions. Since 2012, these have focused more on green roofs and green walls as a means to guarantee green areas in new development projects. Also, fiscal incentives for green roofs range between 10 and 15 percent off property taxes.

Apart from the recognized environmental benefits of green roofs, the City takes advantage of other benefits: put a green roof on a school and you can use it for environmental education. Following this principle, over the last four years, the government of Mexico City has financed almost 35,000 m2 of green roofs on public schools and hospitals.

Though all these actions sound good, they still seem to be a drop in the ocean. Why doesn’t every single governmental building, school, and hospital feature a green roof yet?

It probably does not only boil down to the major money issue, but also to the fact that relatively few local green roof companies exist which are able to fulfill legal requirements for governmental contracts as well as having the capacity for managing bigger building sites. And even with established companies, sufficient supply of materials, such as plants, can be a limiting factor at times.

Especially with green roofs on public buildings, one possible way out of the dilemma springs to my mind. Promoting and financing green roofs should not only be up to the Secretary of Environment, for example. It should be a combined effort of several governmental entities such as the secretaries or departments of:

  • Finances — let it spend part of the city’s income on green roofs
  • Education — use green roofs as a source of environmental education for the youngest citizens and for further research
  • Health — implement green roofs on hospitals and as a general means of reducing stress levels induced by living in an ocean of concrete
  • Economic Development — support the creation of new green roof companies
  • Social Development — lead the way by turning green roofs into recreation centers, food production units, and locations of social cohesion
  • Rural Development — show rural communities a way to a new source of income such as producing green roof plants
  • Housing and Urban Development — implement policies to include green roofs in every urban development

…and—why not?— even the…

  • Secretary of Tourism — be the first one to offer green roof tours.

While most of these ideas are directed towards a general support of green roofs and the strengthening of the corresponding industry, those secretaries could also be politely obliged to “sacrifice” a percentage of their budget on the actual implementation of green roofs. Or is this being too optimistic?

Angela Loder

about the writer
Angela Loder

Dr. Angela Loder is a researcher and strategic planner whose work focuses on the relationship between occupant health, buildings, and urban nature.

Angela Loder

The biggest challenge, and possibly the most difficult to overcome, is cost. Green roofs cost at least twice as much as a conventional roof and the benefits are dispersed over multiple factors—private and public, energy and habitat, air quality and social/psychological well-being. This makes it harder to figure out who should pay for a green roof, particularly for public entities. Getting green roofs on public buildings also requires industry and municipal staff training, as well as the alignment of the planning and building codes, which can be obstacles to green roof implementation. How successfully green roofs are adopted can be indicative of a city’s overall ability to implement environmental initiatives, as their benefits cross departmental jurisdictions and thus require economic, socio-political, and ideological buy-in by different departments in the city.

For example, the City of Toronto initially paid for their Eco-roof incentive program using money from Toronto Water (for the stormwater mitigation benefits of green roofs), but the incentive program did not initially cover nearly enough of the cost at $10/square metre ($1/square foot) to encourage green roof implementation. Though in 2007, costs increased to $50/square metre/ ($5 square foot) and up to $100,000 per project, the real green roof shift came from City’s 2010 legislation, which required all new developments over 2,000 square metres (21527.82 square feet) to install a green roof. This required a graduated coverage ranging between 20-60 percent of available roof space for institutional, commercial, and residential buildings. It should be noted that this legislation also required a provincial legislation that allowed the City of Toronto to require and govern a more stringent green building code than required by the province. Similarly, while Chicago also had a green roof incentive program, it was their Green Matrix that placed Chicago as the national leader in the US for multiple years in a row. The Green Matrix requires projects receiving public money and/or building in certain areas of the city (such as the Loop) to choose a green building option, one of which is a green roof.

There are two lessons to be learned here. (1) Though incentive programs encourage early adopters and some green roof traction (especially among residential projects), there is some indication that these developers would have put a green roof up anyway, as it encourages their brand or reflects their beliefs. This is happening in New York City, where high-end condos are using decks and green roofs as amenity spaces for residents, regardless of municipal legislation. Requirements, code, and limited choices to encourage ‘greener’ building options seem to be the most effective methods for encouraging green roof legislation where there isn’t a market to encourage green roofs. (2) There may be legislative changes that are needed in order to require green roofs, and this can necessitate state and municipal coordination.

Would green roofs on all public and/or private buildings be a good idea? In cities with serious stormwater or urban heat island issues, possibly, but they need to be integrated as part of a larger plan and a broader discourse on resilience in the face of climate change, with green roofs being part of ecosystem services.

The other area where I see green roofs being pushed is in the health and design industry. Biophilic design is increasing in popularity and explicitly mentions visual or physical access to nature, including green roofs as an option to achieve this access in densely built urban environments. Healthy buildings are also increasingly looking at adding greenspace for their tenants based on research that shows that looking at a green roof can improve concentration and calmness and can contribute to well-being. For example, the new WELL Building Standard has green roofs as one of their biophilic design optimization strategies.

Thinking of green roofs as providing more than just stormwater and urban heat island benefits will engage the public and make green roofs more popular. To paraphrase the former Mayor Daley of Chicago, ‘people need to see that you’re doing something’ and green roofs, with their symbolism of progressive design and environmentalism, might be the mascot many cities need.

Amosh Neupane

about the writer
Amosh Neupane

Amosh Neupane is a 19 year old climate activist is a sophomore at Middlebury College in Vermont. He's worked with Global Kids for the past three years, and is an alumnus of Global Kids’ Human Rights Activist Project and the Greening Western Queens Internship program.

Amosh Neupane and Kate Scherer

We live in a city, New York, that is over 190,000 acres, yet only 19 percent of this is green space. One solution to this issue is the installation of green roofs on all of New York City’s public schools. I (Amosh) first learned about “green roofs” when I was an intern for Global Kids, Inc. and the Horticultural Society of New York‘s collaboration on the North Star Fund’s “Greening Western Queens” summer program. During the course of the internship, we sat in on classes on green roofs, visited several of them, attended information sessions, brainstormed ideas on how to make one, and walked around neighborhoods to collect signatures for petitions all through the summer.

One of the biggest obstacles to building green roofs on public schools is the cost of the work. Constructing a green roof can range from ten to thirty $US per square foot. The structure of a green roof includes insulation on the roof, a waterproof membrane, a drainage layer, and a layer of light soil. In addition to these fees, there is also the issue of hiring an engineer or architect. Logistical issues can arise in the building process. Before starting construction, the original roof must be in good condition. If it is not, then there must be repairs. There is also an annual cost in maintenance that can vary depending on the size of the building and its accessibility.

Amosh Neupane with GK Leader Maxine Nash and GK Trainers Angela Marshall and Devon Mercurius, November2013
Amosh Neupane with GK Leader Maxine Nash and GK Trainers Angela Marshall and Devon Mercurius, November2013

Cost issues often deter public schools from even considering the idea of a green roof. However, there are ways to build green roofs at lower costs with minimal maintenance—this is what we aimed to do (and did!) at Global Kids back in 2013. Our goal was to convince the NYC Department of Education to build a simple green roof on one public school in each of New York’s five boroughs. We wanted to do this at schools and in neighborhoods that desperately needed green spaces. My supervisor designated my school, William Cullen Bryant High School, in Queens, as a school that was in dire need of a green roof.

William Cullen Bryant High School is located in the Long Island City neighborhood of Queens. With two major power plants in operation in the vicinity and many industrial complexes running in Woodside, Astoria, and Long Island City, Bryant lies in one of New York City’s most environmentally challenged neighborhoods. The majority of students attending Bryant are immigrant or first-generation Americans and living in low-income communities of color. In the Global Kids’ Leadership Program at my school, I learned the importance of empowering youth to create social change. Kids attending schools such as Bryant often faced injustices perpetuated by socioeconomic factors. Our schools aren’t as robust as the ones in more privileged neighborhoods. There are dismally low numbers of healthy, fresh food markets and restaurants in the area. Often, students and families from these communities are unaware of the importance of a pollution-free environment, green spaces, and fresh food for their minds and bodies. If people are not educated about the effects of climate change and pollution, they often don’t advocate for things such as green roofs on schools because they don’t realize their significance. Through our green roofs campaign, Global Kids students wanted to alleviate some of the environmental issues in underserved neighborhoods.

Global Kids Leader at William Cullen Bryant High School tending green roof garden, May2015
A Global Kids Leader at William Cullen Bryant High School tending the green roof garden, May 2015.

The importance of green roofs cannot be understated. They reduce carbon emissions by cooling the building. Green roofs also cool the surrounding air, decreasing heat island effect. In addition to helping overall temperature and gas emissions, green roofs can also protect our water supply. Green roofs absorb excess stormwater, stopping it from flooding our streets and backing up our sewers. By putting green roofs on every public school, we would ensure that every neighborhood in New York City would have its environment improved. If we limit the amount of green roofs to only commercial buildings, we would only see improvement in the environment in select neighborhoods in New York. These green roofs can also act as science classrooms for students. With their new climate knowledge, future generations of students will advocate for better environments for their communities.

By 2013, after two years of work, we made several remarkable accomplishments. After several months of successful campaigning, Bryant High School had a green roof. To reduce costs, we decided to use simple planters rather than put soil on the entire roof. We planted basil, thyme, tomatoes, lavender, and mint, among many other herbs and vegetables. Even though we hadn’t managed to reach our campaign goal of building a green roof in one public school in all five NYC boroughs, we had managed to get a green roof for one school in a heavily environmentally burdened neighborhood. Another of our vital achievements was influencing the Department of Education’s Office of Sustainability to publish the “Guide to Green Roofs on Existing School Buildings,” a handbook on how to retrofit public school buildings with green roofs. We also led a community discussion on sustainability and climate resilience.

NYC Guide to Green Roof on SchoolsToday, the green roof at William Cullen Bryant High School is tended to and managed by the students participating in the Global Kids program—there is no need for outside maintenance, eliminating a huge potential cost. A year ago, the school set up a farm-stand and the proceeds of the sales were used to aid victims of Typhoon Haiyan in the Philippines. The site also serves as an education space for certain science classes. Tehmeena Khan, a rising junior at Bryant, says:

“The green roof is an ideal place for me to wind down, contemplate things I’ve learned at school, hang with my friends, and just indulge in some gardening. I like the escape it provides from the stressful academics of the school, despite its location within the school walls.”

Kate Scherer

about the writer
Kate Scherer

Kate Scherer is a 15 years old junior at the Notre Dame School of Manhattan. Kate has been with Global Kids since 2014 and has been working as a youth activist since, especially on climate education.

Matt Palmer

about the writer
Matt Palmer

Matt Palmer is a senior lecturer in the department of Ecology, Evolution and Environmental Biology at Columbia University. His research interests are primarily in plant community ecology, with emphases on conservation, restoration and ecosystem function.

Matt Palmer

Infrastructure is expensive and retrofitting older buildings with new technologies takes time, money, and a tolerance for risk. In many regions, green roofs are new enough technologies that the cost and benefit calculations are not robust. Few cities have green roofs with extensive monitoring data, so many questions remain about how well green roofs perform their stated benefits—especially when considering how these benefits may vary over time. Given this, it is understandable that many municipal governments have been slow to adopt green roofs for public buildings or to require them of private building owners.

The range of possible green roof designs is extensive—there are choices on drainage materials, the depth and composition of the growing media, and the composition and maintenance of vegetation, to name only three axes of variation. While having choices is great, there are also tradeoffs involving costs and benefits. For example, a thicker layer of growing media will capture more stormwater and support a greater biomass and diversity of plants, but adding thickness increases both installation costs and the wet weight, thus increasing the structural load. Choosing the right design will vary from building to building based on engineering and financial issues and on the desired kinds of human interaction (e.g., visibility from surrounding buildings, passive recreation, educational use). Some designs will succeed on one building but not others, and some designs may succeed in one city but not in others. While it is exciting that design choices abound, the work of comparing them—especially across cities and through time—has only just begun.

Some of the benefits of green roofs can be realized at lower cost with other technologies. Many of the energy benefits to individual building owners can be achieved more cheaply through better insulation and HVAC upgrades. Stormwater can be captured and stored more cheaply at ground level with bioswales, basins, and storage tanks. Green roofs could offer benefits that these other technologies cannot—extensive greening in densely built neighborhoods with potential neighborhood aesthetic and cooling benefits—but these benefits are hard to value quantitatively. Though green roofs are sometime touted for their ability to filter stormwater, they increase runoff nutrient concentrations in many cases, making them far worse for water quality improvement than other types of green infrastructure.

Some of these limitations to green roofs can be overcome with innovative design and associated research on green roof performance. With regards to vegetation design, there are exciting advances in trialing a greater range of plant species such as a recent program at the Chicago Botanic Garden. Much of this work is horticultural in nature, focused on survival, growth, and aesthetic appeal. It will take the next step of translating these findings to ecosystem functions, such as potential for stormwater capture, cooling, and effects on nutrient and pollutant capture, to be able to evaluate how plant choices might affect the overall benefits of a particular design.

Since green roofs are dynamic, living systems, it is also important to study how plant and soil communities change over time. Many building owners will have limited resources for green roof maintenance, especially over the long term. Without regular care, some plants will die out while others will spread, including “weeds” that will arrive and establish on their own. Since green roofs are usually built with expectations of a long life, it is critically important how the living components of a roof will change as the roof ages. These successional dynamics will be affected by maintenance efforts and will influence the value provided by green roofs.

So, what would it take to greatly increase the number of green roofs? Convincing evidence of the benefits, realistic comparison of the costs in comparison to other technologies, and a solid sense of the long-term return on investment. There are many aspects of these cost-benefit relationships that are hard to quantify, but there are research groups around the world contributing to our collective knowledge. Whether building all these roofs would be a good idea depends very much on what we all find.

Kerry Ross

about the writer
Kerry Ross

As a LEED© Accredited Professional and one of the first Green Roof Professionals, Kerry Ross operates Green T Design, Inc. a design-build company focused on lessening impacts of buildings on the environment through the continuum of landscape and architecture – green roofs and living walls.

Kerry Ross

Why don’t all public or large private buildings have green roofs? 

In Calgary, Canada, we have been slower to adopt green roofs than we ought to be despite being the first municipality in Canada to implement the requirement of a LEED Silver (now LEED Gold) certification for all new municipal buildings and major renovations. This early adoption brought tremendous awareness of and action in the building design and construction sector to lessen environmental harms and attain targeted levels of sustainability, which, in turn, led to the development of New Best Management Practices for buildings.

However, a lack of understanding of the performance of green roofs and how they contribute to LEED certification has led to green roofs being overlooked not only for public buildings but many other building projects. This has resulted in fewer uptakes in favour of other competing technologies (reflective roofing, solar panels, etc.). There is also concern that LEED may not adequately value or reward green roofs.

The capital costs of green roofs are higher compared to other alternatives and the business case for their use is poorly understood; hence, they are often thought of as a luxury feature. For instance, while working in Edmonton, I became aware of concerns expressed by their Mayor for the expense associated with green roof technologies for publically funded projects. Efforts were made by the design team and administration to demonstrate the value to the project and the green roofs were retained.

Many of the same reasons that green roofs are not incorporated on all public buildings also impede their uptake on large private buildings: higher first costs, lack of full understanding of the multiple benefits, competing technologies, aesthetic preferences, etc.

On many large projects, particularly mixed-use commercial developments with residential towers, the local planning department promotes the inclusion of green roofs. These green roof projects are typically developed as intensive rooftop gardens for open space amenities.

It is my experience that green roofs are included in either public projects or large private buildings only when there is a champion of the technology amongst the stakeholders or when the planning department makes them a requirement.

Is this a good idea?

An increase in green roof implementation would be beneficial to my region. While we have an excellent stormwater management system overall, our region is subject to sudden, intense rain and hailstorms. This can overwhelm the catchment systems and causing flash floods, particularly in established neighbourhoods.

Hail damage to buildings, including to roof waterproofing, is on the rise, which has resulted in some very large insurance claims, making the protective covering of a green roof a wise choice for building owners.

As one of North America’s sprawling municipalities, Calgary is actively promoting “Smart Growth” to encourage higher density development. Accommodating multiple functions on site, including places for people, and providing habitat and ecosystem services, all while making density more attractive, would be a definite win-win.

With our new Biodiversity Action Plan, there are opportunities to look at rooftops as sites to compensate for habitat loss and enhance the ecological network in the city.

Whether public or private, green roofs on large-scale developments are an excellent idea, as they would profit from greater economies of scale, create positive environmental impacts in the city, receive higher visibility, and encourage more organizations and individuals to incorporate green roofs.

What would it take to make it happen and to make it worthwhile? 

As a first step, our municipality could expedite the approvals process by making it easier and more streamlined, particularly for owners who voluntarily integrate green roofs. Other incentives that we should consider include a renewal of the density bonus, reductions for stormwater fees, or tax breaks to motivate project teams eager to incorporate green roofs.

Broad education and training is needed at the local level to more fully understand the business case for green roofs in our region and to and convince design teams and municipal leadership that the initial capital outlay is worthwhile. Closing the gap between research and practice will further facilitate appropriate local solutions, improve success and help lower the upfront costs.

It is also important to shift our appreciation for new forms of urban landscapes and aesthetics. In many areas of the country, it is understood that vegetation goes dormant in the heat of the summer; however, we remain infatuated with the mowed, green lawn despite our low level of precipitation (399mm/yr). Recognizing the potential for more frequent droughts in our future, we need designs that incorporate water-wise strategies and better ecologically performing vegetative practices.

about the writer
Kaveh

Kaveh Samiei is an architect and researcher in built environment sustainability.

Kaveh Samiei

I prefer to answer the question with particular reference to current conditions in Tehran. Loss of green urban areas during the last century and high rise construction has meant that vertical green technology is now the most effective way to implement greening in Tehran.

One group of people assigns the built and natural to distinct realms. Others make efforts to achieve significant integration between built and natural realms, including using green roofs.

But why vertical? Aren’t there other choices? And while we don’t take advantage of green spaces on lands correctly, why do we need to implement vertical green spaces that consume more time and money? Don’t forget, the design and construction of vertical vegetated systems requires sufficient skill, room for experimentation, and, finally, appropriate and adaptable technology.

Despite these arguments, there are many benefits of vertical greenery right now in the middle of polluted and crowded cities such as Tehran. The main reasons for utilizing vertical greenery are:

  1. Shortage of unoccupied lands for urban greening in most metropolitan areas
  2. High-rise construction and the growth rate of overall of grey surfaces where flat green spaces can’t develop more
  3. More benefits through utilizing vertical green skins rather than ordinary green spaces
  4. The possibility of making an integrated green space network by greening each building and attaching separated parks and green spaces to them

Recently, rules about green roofing in large cities have been approved. They include incentive programs, i.e. the ability to increase building density on top of public and governmental buildings if a green roof or roof garden is installed. Also the Headquarter of Vertical Green Space Development, a governmental organization in Iran, has begun work in the “Tehran organization of green spaces and parks”. Some municipal branches and “Park and green space organization” headquarters now have a green roof, or their facades became green during recent years, although the quality is questionable!

The main barriers to future development are created by the lack of understanding of the benefits of green skins among people and environment-construction managers. Knowledge, acquired through education and exposure to existing technologies, is critical. Still, in some schools of thought in architecture and construction, vertical greenery is viewed by professors and tutors as merely decorative! Still, encouraging change is beginning.

In addition, vertical vegetation systems are typically very expensive, very slow to mature, or both. Therefore, when vertical vegetation projects are considered, it is important to be able to make informative design decisions at an early stage.

In Tehran, the acceptable exemplars meeting minimum of standards are limited. A semi-arid region is not a heaven for green roofers but choosing plants intelligently, using suitable layering systems, and finding an appropriate irrigation system are the mysterious components of successful green roofs that normally are not specified in most exemplars! Certainly, ecological and environmental benefits of a green skin are the last or forgotten element here!

The worst trend underway in vertical greenery in Iran is limiting ourselves to an ornamental view—an orchard on a rooftop! From the current point of view, decorative beauty and large spaces are more important than other benefits. There is a necessity to shift opinions from this misguided, ornamental view of ground-level greenery on green roofs. The dominance of hard landscape over soft landscapes is another problem for inexperienced green roofers and designers.

We require educational and learning programs. The change must be happen in two main portions:

  1. Shifting traditional view points about vertical greenery.
  2. Adapting laws, codes, regulations, and incentives in the works and designs of law makers, designers, and contractors.

At least, educators must start to introduce vertical greenery in university classes and all architecture, landscape architecture, and environmental design students must take courses in this field. Definitely, the future of architecture and construction will be ecological; that’s not a preference or prediction, but a fact!

This is why most public and private buildings in Tehran have no green roofs yet. Planning for green roofs and living walls are important components of green development in urban planning alongside guiding suitable policy and providing standards and supportive regulations. With sufficient awareness, we can improve and develop vertical greenery in Tehran and throughout urban areas of Iran. We need to go towards such a green infrastructure framework for Tehran, bolstered by research and experiments.

Julie Santos

about the writer
Julie Santos

Julie Santos is a Digital Art Director with a keen interest in urban greening and the improvement of the environment through intelligent regeneration.

Julie Santos

Public and large buildings do not host green roofs in their totality mainly due to a lack of appreciation and steadfast support—as a consequence, we are without the full power enlightenment can harness. Governments, business leaders, and communities alike need intense and constant education regarding green roofs and all the advantages these bring to the built environment, let alone our wellbeing. But is it enough with our current approach?

Living roofs and urban greening as a whole have definite roles to play in our cities, unifying and grounding us in the nature within our immediate surroundings. Advantages such as maximising food production, supporting life forms, and lessening our environmental impact are well documented arguments in favour of green roofs. As a Digital Art Director and Garden Designer, I feel my case is best put forward by touching on the design considerations of our daily experience within our cities—taking into account the end-to-end experience of our interactions and how these affect each person and our culture as a whole.

As we observe relationships with the built environment, it soon becomes evident that there is much frustration and stress caused by the everyday demands a modern city bestows on us. From the daily commute to the concrete jungle, there is little opportunity for pause and taking respite—essential ingredients in continuing with renewed energy whilst keeping healthy, connected, and centred. Modern cities as we know them today date back to a mere 250 years or so—it is no wonder, then, that we are not fully equipped for the demands these complex hubs expect from us, should we compare them with the millennia of earth’s evolution. Genetically, we still belong to seas and rolling hills, so ensuring our cities equip us with a balanced environment is not only advisable but essential.

Green roofs provide specific solutions to challenge the disconnectedness brought on by modern lifestyles. As focal points, they soften the visual landscape, allowing our eyes to rest whilst positively influencing mood through colour, sound, and texture. By supporting and improving fauna, green roofs retain our connection to nature, providing grounding and a sense of belonging. A lessened dependancy on regulating temperatures helps curb artificial environments, improving health and natural resilience while maintaining a closer-to-optimum environment for indoor plants to thrive—‘bringing the outdoors in’ and purifying air in a more natural manner. If green roofs can interact with added immersion in a natural environment, they bring a welcome opportunity to closely appreciate flora and fauna, encouraging the curiosity and observation that are essential to creativity and ‘out of the box’ thinking—key assets for professionals in all walks of life.

At present, we are heavily dependent on government support for social awareness and laws regarding green roofs. If we are to make the most of these unique offerings, we should strenghten existing research in Applied Service Design: mapping the lifecycle of a green roof with its key interactions as well as observing how the value in these interactions is directly brought into workplaces, homes, and our other social structures. This approach will reinforce our existing research and back up the scientific advantages with people-centric profitability, effectively influencing business and government interests by bringing swifter takeup via a profit-led understanding and, therefore, committed buy in.

There is still so much that can be done to maximise the understanding and appreciation of green roofs and why they are essential to any serious and forward-thinking community. I believe Service Design thinking can improve the effectiveness of the green roof message and ensure this most deserved cause harnesses the attention it deserves.

Mark Simmons

about the writer
Mark Simmons

Mark Simmons Ph.D. is Director of Research and Environmental Design for the Ecosystem Design Group at the University of Texas.

Mark Simmons

Why green roofs in hot climates are missing and why we need them there more than anywhere. 

PREAMBLE Green roofs in temperate climates are too easy. They have been developed and adopted in the temperate and cool-temperate climates of Europe and North America. Although these regions can get extreme weather, they generally do not experience climatic extremes of high temperatures, prolonged drought, or intense rainfall events in the same way as tropical and subtropical regions. This presents challenges for hot climate green roof design to not only provide adequate growing conditions for plants, but also to improve roof performance with respect to all the intrinsic (e.g. cooling building, extension of roof membrane lifetime) and extrinsic (e.g. flash flood mitigation, reduction of heat island effect) benefits we expect. I suggest that the components of conventional green roofs, including plant palette and growing media composition and components, need to be modified. Here I identify the following barriers:

PLANT SELECTION First, we need to get away from traditional temperate plant palettes: plants adapted to thin, well-drained environments. High daytime and (as importantly) nighttime heat loads, drought, and floods mean a switch away from plant guilds with a narrow niche (e.g. most sedums) to those with a broader ecological breadth. Plants must be able to survive long-term saturation for weeks, as well as weeks or months of drought and seasonal or year-long heat.

WATER RETENTION AND PLANT AVAILABILITY Paradoxically, green roof design has been driven by the need for the conflicting goals of good stormwater retention and adequate drainage (both in the media and immediately above the roof membrane), while at the same time leaving sufficient available water in the growing media for plant uptake. These benefits are even more desirable in a hot climate to optimize retention of stormwater— prolonging its availability for plant use—and to be able to dry-prime media to accept the next rain event. Plant transpiration abilities and root morphology can be exploited to help this, but the conventional ‘sandwich’ design of media over root barrier over retention layer may actually interfere with this performance benefit.

HEAT It isn’t necessarily high leaf temperature that limits growth in the hot-climate green-roof environment. Most vascular plant roots have a much narrower temperature envelope of performance in comparison to aboveground stems and leaves. Although it is species-specific, generally the operational temperature range of root physiological processes is from 4°C to 30°C. Above that upper temperature limit, respiration and other root processes decline rapidly and certain processes, particularly the synthesis of secondary materials, slow down until temperatures climb above 48°C, where such processes stop functioning altogether. Conventional green roof media has a high fraction of expanded mineral component (clay, shale) and this can have high specific heat capacity and high conductivity; together with large pore space between particles, this allows for air movement, meaning that heat can travel vertically through the media to depth—remember that, on a hot day, media surface temperatures can exceed 70°C. On an extensive roof, this means reduction of effective root volume and reduced nighttime cooling.

CONCLUSION The characteristics of green roof water retention, plant water availability, plant selection, and thermal properties are all critical factors which need to be adapted to help address the harsher environmental conditions and performance demands of hot climates. If these problems can be overcome—and current research is showing that they can—then the combined environmental, ecological, and sociological benefits suggest green roofs could be an imperative technology for towns and cities in tropical and subtropical regions of the world.

Kevin Songer

about the writer
Kevin Songer

Kevin is a plant biologist, lawyer and acute aortic dissection survivor. His tropical and coastal green roof designs include installations in Main Street Disney, Orlando, Florida, on the island of Bermuda and on historic structures.

Kevin Songer

Today, many native wildlife and plant species struggle to compete with exotic, invasive horticultural and anthropogenically related non-native species for survival. Aggressive species with no natural predators are, in many areas, replacing native plants and animals at an alarming rate. Although change across our planet has always occurred, today’s rate of pre-Columbian ecosystem change has accelerated to the point where mass extinctions may soon be unavoidable.

Species extinction issues involve great risks to humans, including loss of potential medicines, of important economic resources, of longstanding traditions, and more. Unfortunately, invasive species colonization and native displacement is hard to control across most urbanscapes—except, perhaps, on green roofs.

We may never fully win the battle of preserving all pre-Columbian ecosystem component species. Over time, humankind will continue to lose critically important species to monocultures of aggressive plants and swarms of unnatural predator species, most brought on by our own anthropogenic activities.

Noxious species roots and seeds will cover the landscape, transported by roads, stormwater ditches, and urban runoff. Native flower blooms may be relegated to specimens in a museum or photos in a library book.

IMG_3714Yet green roofs, be they on a shed, garage, house, commercial building, apartment complex, or bus stop can truly make the difference between death and survival for many of our native plants and wildlife. With the health of the human species so closely related to successful functioning of those ecosystems around us, ensuring native plant and animal survival benefits humankind.

Yes, there are many sustainability-oriented reasons to require green roofs on new buildings, from urban heat island effect reduction to cleaning and attenuating stormwater to sequestering carbon. I suggest, too, that many of our native species, both plants and animals, may find last corners of uninvaded habitat on our city rooftops.

While ground-level landscapes can quickly fall prey to invasion of nuisance plant monocultures, green roofs have boundaries. Yes, maintenance on a green roof may be just as cost- and labor-intensive as ground-level exotic plant control. Green roofs, however have, clearly defined borders, usually free of an unrelenting and uncontrolled neighboring invasive grass, shrub, or tree patch.

Many threatened native plants thrive on green roofs. Case studies across the world have highlighted endangered plant colony survival successes in green and brown rooftop habitat.

Importantly, imperiled wildlife will seek out green roofs. We have seen the progression after installation of vegetated roofs of the arrival of smaller creatures: lizards, anoles, tree frogs, insects and dragonflies, butterflies and moths, each establishing its community throughout native vegetation on green roofs.

Here in Florida, as the first generation of smaller wildlife species became established on green roofs, additional populations of larger birds and reptiles begin to appear. Snakes soon forage through green roof plants for lizards and frogs, maintaining population control.

Following snakes come birds of prey tracking snakes, smaller birds, squirrels, and other green roof species.

Owls, red-tailed hawks, peregrine falcons, swallow-tail kites, osprey, and a pair of eagles regularly visit our green roofs, choosing perches in nearby trees and often taking the opportunity to feed on a ground mouse running through the neighborhood streets and yards below.

Green roofs are important wildlife sanctuaries in the concrete jungle, especially for those species endangered because of habitat loss. Green roofs should be considered necessary infrastructure—required for all new development for many reasons, but especially as a conservation measure, providing habitat for threatened and endangered species.

It may well be that future generations’ archaeological and paleontological expeditions will find that many pre-Columbian plant and animal species made their last stand atop our urban core rooftops.

Christine Thuring

about the writer
Christine Thuring

Christine Thuring is a plant ecologist who integrates her love of life into creative collaborations and educational dialogues. While her expertise is expressed particularly in the built environment (green roofs, living walls, habitat gardens), she is passionately practical and enjoys restoring peatlands, mentoring students, leading interpretive walks, and advocating sustainable and healthy lifestyles.

Christine Thuring

This question reminds me of the early days of LEED (Leadership in Energy and Environmental Design), the US Green Building Council’s credit-based approach to sustainable buildings. It was predicted that LEED would succeed in widespread implementation because the US government was its biggest investor. I don’t know if that’s true, but it makes sense. By investing in green building technology through implementation, the government would save tax dollars through improved energy efficiency of public buildings. More importantly, this would also help establish the market for all the bits and pieces required for this system of sustainable architecture to flourish, from carpets and windows to methods and process.

Turning to green roofs, I think it’s safe to say that the reason these systems are found on some—but not ALL—public (or large private) buildings around the world is because only some, but not ALL, civic leaders and building owners are fully aware of all the benefits green roofs impart. Any city with considerable green roof coverage has probably had at least one ‘green roof champion’ on (or within the fringe) of its council. Someone with sufficient interest and time to recognize that green roofs offer numerous benefits and are economical because of everything they can do.

Installing green roofs on all large buildings is always a good idea, I reckon. Benefits such as thermal efficiency, reduced material waste (e.g., extended lifespan of waterproofing), mitigation of stormwater, improvement of air quality, and habitat creation are just the tip of the iceberg.

To make this happen, my sense is that before anything else, you need that champion. Someone who understands green roofs’ potential and who has the skills to develop and maintain a program that will facilitate their implementation. (I look forward to the contributions from the green roof champions who are part of this panel!)

For such a program to be worthwhile, a future-oriented approach with a committed ecological vision is crucial. The reason for this emphasis is to offset the simple customer transaction kindly provided by the commercial green roof industry. While this arrangement makes coverage easy to achieve, it also leads to green roof installations that could be anywhere in the world, expressing little of each bioregion’s unique ecology. Sedum-dominated green roofs emerged from ecological design processes in 1970s Europe, and they are superb for that bioregion. The sedum roof is a trimmed down ‘basic common denominator’ resulting from decades of competitive innovation, however, and is lacking in contemporary ecological rationale (e.g., Decade on Biodiversity).

In other parts of the world, then, a future-oriented approach with committed ecological vision for widespread green roof implementation could mean ensuring that regional opportunities, such as the needs of migrating species, are considered. Off-the-shelf systems may be suitable, and sedums are fantastically resilient, but the opportunities that a new, large-scale vegetated roofscape could offer invertebrates, birds, and ecological processes must not be neglected. Trans-disciplinary conversations involving ecologists with green roof and other experts, within a framework of the region’s specified goals (e.g., biodiversity action plans), will also help to make widespread green roof implementation worthwhile for this and future generations, both for human and other forms of life!

Glasgow Made the Clyde and the Clyde Made Glasgow

Art, Science, Action: Green Cities Re-imagined

A review of “Clyde Reflections,” an art film by Stephen Hurrel and  Ruth Brennan, on exhibition at the Gallery of Modern Art in Glasgow, Scotland.

The west coast of Scotland has been known to enchant, with its rough coastal edges, intricately carved islands, charming towns, and an aquatic landscape that is as often tranquil as it is a testament to the brute force of the natural elements. The Firth of Clyde, located on Scotland’s west coast, is one of the UK’s deepest bodies of coastal waters and encapsulates layers of geologic, natural, and social histories. Trailing off as a spindly leg of the firth, the River Clyde flows through to Glasgow and has been an essential waterway for Scotland’s industries and cultural heritage.

Geographically, distinctions between the Firth of Clyde and the River Clyde remain vague; understandably, the tidal nature of these bodies of water leads to a constant ebb and flow, inextricably linking city to sea. On cue, any Glaswegian will recite “Glasgow made the Clyde and the Clyde made Glasgow”, not only referring to the visual prominence of the waterway and the importance of the river to the city’s many industries, but also to the clear influence of industrialization on the tributary.

3-Still-underwater
An underwater still from Clyde Reflections. Underwater footage by Howard Wood, courtesy Stephen Hurrel and Ruth Brennan

Once abundant with herring, cod, ling, and turbot, the Firth of Clyde is now an aquatic desert. When considered alongside the historic fishing heritage that can be traced back many generations, the current state of the Firth of Clyde is a complex and nuanced case for the conservation and regeneration of the ecologies in this area.

Clyde Reflections is a 33-minute film, the product of a collaboration between artist Stephen Hurrel and social ecologist Ruth Brennan. Hurrel and Brennan began their partnership after an art-science expedition with Cape Farewell to the Outer Hebrides; during this trip, it became clear to the pair that they shared a similar way of working and an interest in the natural environment. Publications and cultural maps were some of their first collaborative outputs, with the idea for the film following shortly after.

By sharing multiple narratives of those who live or work within the Firth of Clyde, Clyde Reflections encompasses the many perspectives that continue to shape the discussion surrounding this body of water and, implicitly, the voice of the Firth itself. The film premiered at Centre for Contemporary Arts Glasgow in September 2014 and was most recently shown as an immersive installation at the Gallery of Modern Art (GoMA) in Glasgow from May 29th to July 5th 2015 as part of the gallery’s Moving Image Season.

Commissioned by Imagining Natural Scotland and Creative Scotland, the film frames responses to what is considered ‘natural’ and ‘not natural’ in this region, defying notions of untouched tranquility that the surface appearance of the firth may convey in its current state. Delving below the surface, both symbolically and metaphorically, the film exposes a more complex story of heritage, the human relationship to the water, and uncertainty about the future of the Firth. Clyde Reflections includes a mix of underwater and above-water footage and is equally meditative in both instances. The rhythm of voice-overs and music provides further content for viewers to dwell on, with more layers revealing themselves on multiple viewings.

1-GoMA
Clyde Reflections on exhibition at the Gallery of Modern Art (GoMA) in Glasgow. Credit: Stephen Hurrel and Ruth Brennan

With enchanting visuals reminiscent of a Jacques Cousteau film, Clyde Reflections reminds us just how unfamiliar and somewhat extraterrestrial the underwater marine environment remains to our everyday lives. The humble and realistic tone provided by the interview clips prevents the film from becoming too idealistic—many of the interviewees are willing to admit the lack of certainty that they have in response to questions of conservation, ecological balance, and the human impact on this body of water. This realness offers viewers the chance to form their own thoughts or accept their own hesitations, rather than forcing a singular or superficial solution, as is often the effect imposed through the ‘do-gooder’ tone used in many conservationist films and projects.

Ruth Brennan describes her perspective in approaching this project as such: people and nature are an intertwined system, and we too often have removed ourselves from what we consider to be ‘natural’. This is a concept that is reiterated within the patterns and perceptions of urban settlement suggested in the film—we’ve built a separation, physically, between nature and ourselves by aiming to construct commercially dense cities that are frequently devoid of biodiverse green spaces or accessible connections to existing environmental systems. This is also reflected in the connotations of ‘Nature’ as being located elsewhere, far away from the urban existence. However, as provoked in Clyde Reflections, this paradigm is shifting and increasingly being called into question. Despite the uncertainty that is instigated when considering ourselves as part of a natural ecological system, beginning to dissolve this barrier between human and nature will play an increasingly important role in the future of conservation, urban ecology, and the application of environmental theory.

Clyde Reflections aims to embody the complexities of human-nature relationships; its screening within the urban context of GoMA provides a much-needed interjection of a meditative space that challenges preconceptions of the human-nature relationship into the normal patterns of city life. The presence of the River Clyde within the everyday lives of many Glasgow residents has sometimes been forgotten, as the waterway has frequently been identified solely as a means of economic growth and industrialization. However, interest in the river has seen a recent reemergence, partially due to the work of artists and creatives who are searching for a deeper connection to place and context within the city. This new energy marks a turning point towards a more holistic systems-thinking approach to our immediate ecologies and the human role within them.

2-StillfromClydeReflections
A still from Clyde Reflections. Credit: Stephen Hurrel and Ruth Brennan

While Clyde Reflections does not provide an immediate solution to address issues of natural resource degradation, it does provide a significant and potent opportunity for viewers to reflect on their own part in a puzzle that continues to grow exponentially in its complexity and connectivity. There is crucial importance in bringing this experience to an urban city center; in exploring the relationship between humans and nature, we must question how conservationist and ecological concepts affect the places where critical masses of humans reside. The viewer is reminded of this interconnectivity multiple times within the film through references to industry and a brief anecdote addressing the horror of microplastic particles within the firth. Industrial production and its effects on hydrological environments are a global chain in which we are all connected, and the space, pace, and nearly hypnotic nature of Clyde Reflections reminds us of this.

Clyde Reflections remains loyal to the idea of complexity and connectivity, never offering a single narrative in revealing this contested and sensitive marine environment. The window to marine ecology provided by this film engenders mindfulness towards the effects of human actions and habits instigated within the city. For this reason, the urban audience becomes an integral part of this project, providing wider engagement with the human-nature relationship expressed within the film. This engagement is critical for starting a more complete conversation about the degradation of the Firth of Clyde, and ultimately the cause-effect relationship between the human commodification of nature and the resulting deterioration of ecologies. In the case of the Clyde, only when we recognize the importance of embedding ourselves, as humans, within nature, will we truly understand the importance of balance and collaboration for the healthy coexistence of the human and natural ecologies.

Allison Palenske
Edinburgh

On The Nature of Cities

After the exhibition, the film can be viewed in its entirety at:
http://www.hurrelvisualarts.com/work/art-science/clydereflections/

For more about the Clyde Reflections project:
http://events.glasgowlife.org.uk/event/1/clyde-reflections

https://galleryofmodernart.wordpress.com/2015/05/11/moving-image-season-clyde-reflections-from-art-science-team-hurrel-and-brennan-28-may-5-july-2015/

Urban Nature as Festival: Berlin’s Long Day of Urban Nature

Art, Science, Action: Green Cities Re-imagined

Just before 10 am one Sunday this June, 300 people prepared for a boat ride on the River Spree, lining up in a park next to the longest surviving stretch of the Berlin Wall. The boat was a cheerful blue and yellow passenger vessel, mostly used for river tourist excursions and dinner cruises. But this group differed from the usual crowd of visitors from across Germany, Europe, and further beyond. Instead, local nature enthusiasts, families, and curious Berliners prepared to board the ship, ready for commentary on the river’s unique urban ecosystems.

Langer Tag der Stadtnatur - Boat at Oberbaumbrücke

Langer Tag der Stadtnatur - Boat at Treptower Park
Eight riverfront ecology boat tours carrying 300 people each traversed the Spree during the Langer Tag der Stadtnatur. Here, guide Derek Ehlert narrates the tour, as it approached the Oberbaumbrücke in Friedrichshain (top), and passed along the banks of Treptower Park (bottom).

Over 90 minutes, the boat passed the heart of gritty Friedrichshain and the media headquarters of the Urban Spree redevelopment and cruised to the east, towards the waterfront green spaces of Treptower Park. Some participants brought binoculars and observation gear, while others simply relaxed with a coffee or lager. Landscape planner and ecologist Derk Ehlert narrated the tour, pointing out wildlife and describing the various species’ habitats, food sources and migration patterns within Berlin’s parks and waterways. Ehlert estimates that there are roughly 20,000 plant and animal species in Berlin, which he considers the greenest city in Europe.

During this particular weekend, such a convening was not unusual: over 26 hours, an estimated 25,000 people explored the city’s forests, riverfront, lakes, gardens and landscapes through the Langer Tag der Stadtnatur, or the Long Day of Urban Nature. Although cities are increasingly celebrating urban biodiversity, Berlin’s event is perhaps the largest regular citywide celebration in the world and will mark its tenth anniversary next year. The event includes contributions by dozens of local partners and sponsors and is a great model for other cities hoping to better engage their citizens in matters of urban ecology.

Langer Tag der Stadtnatur - Berlin panorama from boat
View of Berlin’s skyline from the River Spree, including Treptower Park (at left), the Fernsehturm or TV Tower, and the Ostkreuz water tower

Wolfgang Bussman, the director for the Langer Tag der Stadtnatur has explained: “our main goal is to make nature in our immediate neighborhoods visible and to provide visitors with unique experiences which show how important conservation in the city is.”

This year, events began in the afternoon of Saturday, June 20th, with late-night activities such as night climbs and forest walks running until 1am on Sunday. Sunday, June 21st then saw a full schedule of walks, boat rides, bus tours, bike tours, lectures, and other happenings at sites ranging from the riverfront to private gardens to nature reserves. Events were nearly free: a 7-euro full-weekend ticket covered some basic event costs, but mostly existed in order to allow organizers to track participant numbers, organize reservations, and coordinate corporate block bookings.

In total, the Langer Tag der Stadtnatur included over 500 events at about 150 sites across the city, including hubs in the city’s center, north, south, east, and west. The city center’s largest hub was an urban garden sponsored by a housing association near the central crossroads of Alexanderplatz. Initially set up as a short-term project, the garden recently became a permanent space for the housing association residents. Event hubs elsewhere in the city this year included the Grunewald, Berlin’s famous urban forest; Tempelhofer Feld, the historic airport recently reclaimed as a park; the Natur-Park Südgelände in Schöneberg, and Britzer Garten in the southern district of Neukölln.

Langer Tag der Stadtnatur - Prinzessinnen garten, Berlin honig-min
Urban garden Prinzessinnengarten, or Princess Gardens, hosted numerous events during Berlin’s Langer Tag der Stadtnatur, as well as the garden’s regular community flea market, which is held bimonthly (see below).

The first Langer Tag der Stadtnatur was held in 2007 and included about 350 events that attracted 10,000 visitors. Over the years, the program has steadily grown, with different focuses each year depending on the interests in the city at the time. Urban gardening and beekeeping, for example, have been prominent themes recently. Partnerships also emerge in different years depending on major urban initiatives or events; for example, organizers anticipate collaborating with Berlin’s upcoming IGA (Internationale Gartenaustellung, or International Gardening Exhibition) in 2017.

The Stiftung Naturschutz Berlin (or, the Berlin Nature Conservation Foundation) is the main coordinator for the event, partnering with the Berlin Senatsverwaltung for Stadtenwicklung und Umwelt (Senate Department for Urban Development and the Environment), which is a primary funder. Corporate and public sector partners also contribute funding, while local NGOs, community organizations, and individuals organize and host specific events across the city. The Stiftung coordinates this citywide participation, arranging a few signature events and managing the website, printed program materials, online reservation system, and marketing. Stiftung Naturschutz Berlin staffer Wieke Mikette explained that “we try to have all the main characters in Berlin participating, ranging from the relevant organizations to private persons hosting events in their gardens.” The partnership aspect of the program is seen as one of the most successful elements, both in creating a full calendar of events and in engaging a wide range of stakeholders.

The program also aims to engage with decision-makers, to help them recognize the urban nature present in Berlin. This year, several neighborhood bus tours included the heads of Berlin’s local district administrations (the Bezirksbürgermeister) seeing their own districts, along with constituents and other event participants. National politicians also participated in the riverfront ecological tours and other events. The Stiftung hoped “that [the politicians participating] could see how important [urban ecology] is and how green the city is,” explained Mikette, who added that most other participants were regular Berliners, including “people coming from the north, from the south, from the east, from the west. They are really from Berlin. It is a Berlin event.”

The event has now grown and expanded across Germany, with 11 other cities hosting similar weekends, including Hamburg and Bremen. In Berlin, the weekend is also reminiscent of other opportunities for marathon-style urban immersion, such as the Long Night of Museums and the Long Night of Science. In fact, the Naturschutz Stiftung first looked to these events as models when piloting the Langer Tag der Stadtnatur.

Langer Tag der Stadtnatur - Prinzessinnen garten flohmarkt-min
Urban garden Prinzessinnengarten, or Princess Gardens’ community flea market.

Internationally, many other cities host citywide celebrations around built environment themes, but very few introduce urban nature to a mass audience the way that the Langer Tag currently does. Some address architectural topics, such as London’s Open House, which in 2014 opened 850 architectural sites to over 250,000 people. About twenty other cities internationally now also host Open Houses, including New York, Buenos Aires, Rome, Tel Aviv, Melbourne and Chicago. Similarly, Jane’s Walk is a festival of citizen-led neighborhood walking tours, held simultaneously in cities around the world. Either of these festivals may contain tours or open houses relevant to ecological issues, but urban ecology is not necessarily at the forefront of discussions.

As another alternative to the Langer Tag model, Bioblitzes celebrate the abilities of citizen scientists and invite community members to consider the ecological diversity of their cities. Short-term events in which scientists and community members seek to identify as many species as possible, Bioblitzes offer a comparable “festival” atmosphere and can be held at a site, neighbourhood, or on a citywide scale. Although the concept of a Bioblitz was pioneered in the U.S., it is currently particularly well developed in the UK. Bristol’s Natural History Consortium runs a national Bioblitz Network and London’s Museum of Natural History recently released a full Guide to Running a Bioblitz within its citizen science division.

The Melbourne Bioblitz is one particularly remarkable example due to its citywide scale, longer duration, and contribution to the city’s planning policies. Held over two weeks in October and November 2014, the project invited citizens to participate in data collection for the city’s first-ever Urban Ecology Strategy. Over 700 people participated at sites across the city, providing 300 sightings and photographs, which have since been mapped by the City of Melbourne. The Bioblitz included extensive online engagement opportunities alongside the 52 in-person events, which occurred in disparate locations and at different times of day to accommodate both human participants’ schedules and the wildlife’s likely patterns. In some ways, the event was akin to a citywide charrette for ecological planning, with citizens supporting the scientists and planning professionals in a rapid-fire period of on-site analysis.

Unsurprisingly, urban Bioblitzes are more frequently organized on a smaller scale, focused on single sites or areas of biological interest. For example, the 2015 Auckland Bioblitz invited citizen scientists to participate in the development of a Biodiversity Strategy for the Pourewa Reserve and Kepa Bush over a 2-day period. Like the Bioblitz in Melbourne, the event served a dual purpose: it sought both to create an educational opportunity for participants and to gather data to inform a plan for the site’s preservation as a reserve. Tasks for citizens ranged from freshwater fish counting to insect sweeping, plant identification, and moss identification, all of which contributed to the long-term plan for the site’s use as a reserve.

Langer_Tag_der_StadtNatur_Poster
Promotional posters for the Langer Tag der Stadtnatur were visible throughout Berlin during the weeks leading up to the event, including in the U-Bahn and S-Bahn.

The organizational approach for Auckland’s Bioblitz differed radically from the Melbourne or Berlin model in that it focused on a single natural area with unique biodiversity or a particular need for a survey as opposed to encouraging participants to explore and reflect on nature in the city at large. Many other events worldwide have followed this model, such as the National Geographic 2007 Bioblitz in Washington’s Rock Creek Park or the 2015 bioblitz in Hawaii’s Volcanoes National Park. Numerous British cities also hosted small-scale Bioblitzes in 2015, as well as national themed Bioblitzes, such as the Garden Bioblitz, which invited people across the UK to tally the species in their home garden and then upload the information to a national database.

Finally, Los Angeles offers a fourth model for engaging citizens in local urban ecology: a purely educational event, hubbed at a single civic institution. The city recently piloted its Urban Nature Fest, hosted at the Natural History Museum and described as the city’s “first ever festival for metropolitan nature lovers.” Activities largely took place on site, including garden tours, performances, readings, and presentations, many of which sought to increase the public’s exposure to the museum’s scientific research. Forty different local environmental organizations participated, as did entertainers such as the Santa Monica Mountain Rangers Band.

As urban ecology plays an increasingly prominent role in local planning, will other cities take the initiative to launch events such as these? Local advocacy organizations such as San Francisco’s Nature in the City, museums such as New York’s Museum of Natural History, and academic centers such as Yale’s Urban Ecology and Design Laboratory would be well placed to spearhead efforts in their own cities. Berlin and Melbourne’s examples show that the most effective events involve partners across a metropolitan area, including both organizations and individuals. The contrast between the Berlin, Melbourne, and local bioblitz models also shows that the events can be effective as either citywide festivals or single-site immersion opportunities, with or without a substantial citizen scientist element.

Whether attending much of the Langer Tag, or environmental events at other points during the year, Berliners are lucky to have such a green city and such a chance to explore it. Cities across Germany have already followed suit, and perhaps the model will soon spread further afield.

Katharine Burgess
Berlin

On The Nature of Cities

James Corner on Reading and Imagining the Landscape

Art, Science, Action: Green Cities Re-imagined

A review of The Landscape Imagination: The Collected Essays of James Corner 1990—2010, by James Corner. 2014. ISBN 9781616891459. Princeton Architectural Press, New York. 320 pages.

James Corner’s prolific writing from the past two decades invites readers on a journey to discover the elusive medium of landscape. As one of the most prominent landscape architects of our time, his writing is as much a means of advancing the field as is his built work. The Landscape Imagination is the first written project composed exclusively of Corner’s own essays since Taking Measures Across the American Landscape, published in 1996. In the twenty years between these two books, Corner wrote the essays collected here while simultaneously composing a celebrated portfolio of built landscapes. Though his iconic designed works (for example, The High Line in New York City) eclipse his written works—particularly outside academia—we gain access to a rich and penetrating assessment of landscape’s profound role in culture when we wander through Corner’s sprawling wordscapes. 

landscape imaginationThe Landscape Imagination is organized more thematically than chronologically, with essays parceled out according to areas of Corner’s ongoing investigations: Theory; Representation and Creativity; Landscape Urbanism; and Practice. Although many of the essays were written years ago, their sequencing in the collection renders them fresh. Each section builds upon the previous, linking theoretical aspects of the medium to practice through what Corner calls “the landscape imagination.” Described as a critical agent and a form of social action, the landscape imagination’s goal is to make landscapes that provoke and challenge society’s relationship to the natural world. Corner argues that landscape is the great mediator between nature and culture, since it invokes natural processes over time but is fundamentally a cultural construct. Therefore, he says, “It can renew the common and banal and reconcile our modern estrangement from place.” But the landscape imagination is needed to liberate landscape from its “devolved place as scenic object, subjugated resource, or scientific ecosystem.” This collection is a conversation about tools to unleash the landscape imagination, exemplified through Corner’s own journey.

The High Line, in New York City. Photo: David Maddox
The High Line, in New York City. Photo: David Maddox

In each essay, the landscape imagination confronts and deconstructs the simplistic binaries hindering landscape architecture: art versus science, culture versus nature, city versus landscape, theory versus practice, technique versus motivation, imaginary versus built, phenomenology versus technology, tradition versus modern. Corner argues that these are not actually dichotomous, but related—fundamental, even, to the landscape imagination. The landscape imagination is both interpreter and mediator, both informer and popularizer, both conversational and circumstantial, both dialogue and contemplation. It mediates between the local and global, between recovery and invention, and between past inheritance and future potential. These essays build a case for the landscape imagination as the great confounder, able to transcend limiting binaries by finding infinite potentials within them.

Since there are now built works influenced by the ideas found in these essays, we can better understand Corner’s writing by assessing its translation to practice. For example, “Sounding Depths—Origins, Theory, and Representation” (1990), explores several dichotomies limiting landscape architecture while addressing why new theory is critical to the field. In the next essay, “Three Tyrannies of Contemporary Theory” (1991), Corner proposes a hermeneutical approach to landscape architecture theory to overcome the lack of meaning in our repetitive, formulaic, and prosaic world. Hermeneutics is a practice, borrowed from the social sciences, of understanding the world through a historical interpretation of texts. Corner proposes that instead of trying to understand landscapes as self-evident objects, their complexity requires interpretation. Through critical acts of landscape architecture—drawing, writing, or constructing landscapes— we can read and interpret them like texts, uncovering infinite new potentials within the binaries. For example, it is possible to picture the High Line in New York City (a Corner project) re-created with any number of theoretical binaries: a nostalgic re-creation of its past, an objectified pictorial image, a bucolic respite from the city, or even demolished to prioritize the street grid below. If the High Line were approached from any one of these views of landscape, the final product would not offer its unique perspectives of the city and landscape as urbanism. Rather than preserving or re-creating its past, the High Line was mined for new possibilities. Thus, the High Line became an agent in the active, ever unfolding tradition of the city.

Corner’s ideas evolve in several different ways as his writing progresses over time. He identifies some of those changes in his introduction to the book, moving from representational interests to instrumental practices, from landscapes generally to landscape architecture specifically, and from landscape as parks and open space to landscape as a form of urbanism. Other changes become apparent while working through the essays themselves: from ecology as metaphor and form of representation to ecology as operational model and the gradual identification of community engagement as an “agent of creativity.” This seems to place community engagement on equal footing with ecology in Corner’s worldview.

Corner criticizes the profession for compounding the problematic binary of culture versus nature by “drawing more from objectivist and instrumental models of ecology, while design creativity has been reduced to environmental problem solving (know-how) and aesthetic appearance (scenery).” In “Landscape Urbanism” (2003) and “Terra Fluxus” (2006), he calls for a “culturally animate ecology” where culture and nature become complementary through a practice of combining them into new kinds of public spaces where landscape drives the process of city transformation. In his most recent essay, “Practice: Operation and Effect” (2010), Corner states a need for designers to develop “sophisticated conversational, social, and rhetorical skills to authentically and productively engage the public in a process that supports imagination and innovation.” With community engagement now identified as an agent of creativity, perhaps Corner will continue to explore, in writing and practice, the landscape imagination’s role in developing these skills.

Although the book’s final essay, a previously unpublished lecture titled “Hunts Haunts: History, Reception, and Criticism on the Design of the High Line” (2009), is an assessment of the High Line through the lens of John Dixon Hunt’s writings, it also exposes what Corner hopes his written and built works accomplish. Corner describes Hunt and his writings about “haunting” landscapes as likewise haunting to him over the years. Their indescribable lingering presence, or haunting, has inspired Corner to further explore them through his own writings and, ultimately, through his built work. He attributes the haunting quality of some landscapes to the human imagination. Here we see how Corner’s landscape imagination came to be, and better understand his goal to create places eluding easy definition, places that “haunt” us with lasting presence—places like the High Line.

The Landscape Imagination is a midcareer measurement of Corner’s own longue duree, what Hunt called the long duration of experience and meaning over time differentiating landscape architecture from its allied professions. Sometimes Corner’s theories are successful, sometimes they fail, but together with the vagaries of practice, they provide liberation of thought and action for those of us working with the landscape medium. There are few contemporary voices in landscape architecture whose work intentionally avoids providing formulaic answers, but rather seeks to create open-ended interpretation, as James Corner. This latest work, although a rigorous read, challenges our assumptions and encourages us to keep an open mind about landscape’s potential.

Anne Trumble
Los Angeles

On The Nature of Cities

Mapping the Forest for the Trees: A Census Grows in the Five Boroughs

Art, Science, Action: Green Cities Re-imagined

New York City is home to more than 600,000 street trees, according to some estimates. But good luck finding any one of those trees on a map—that is, until now. For the first time ever, the NYC Department of Parks and Recreation is working with thousands of volunteers to measure and map every single street tree on every single block in every single neighborhood in all five boroughs of the city.

Every. Single. Tree.

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Mapping with the 120th Precinct Explorers on Staten Island in July. Photo: @healthforyouths on Twitter

As if the sheer numbers weren’t enough of a challenge, the small army of volunteers—five thousand and growing—is using old fashioned site-surveying techniques to determine the location of all those curbside trees. No GPS. No Google Street View. No satellite imagery. Just a $90 measuring wheel, a plastic tape measure, and a meticulously designed data logging website filled to the brim with sophisticated geometry, cartography, and code. The whole improbable effort goes by the name of TreesCount! 2015 and it’s inviting New Yorkers to finally see the urban forest for all of its individual trees.

Why would one of the most technologically savvy cities on earth choose to map all of it street trees using methods familiar to, say, a seventeenth century Dutch farmer plotting out the boundaries of his land at the southern tip of Manhattan Island? Three simple answers: the method is cheap, it’s reliable, and it’s easy for volunteers to learn. Developed, tested, and refined by TreeKIT during the past five years, the mapping method asks volunteers to measure the distance between trees lined up along a street edge and an easy-to-estimate “start point” at the nearby intersection. You can learn more about the details behind the method here, here, and here (full disclosure: I co-founded and co-direct TreeKIT with my longtime collaborator Liz Barry, another participatory research enthusiast based in NYC). Volunteers have mapped nearly 100,000 trees since the initiative kicked off in late May and the speed with which new trees are added to the map seems to be accelerating week by week.

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Young volunTreers using the tree ID guide on Staten Island in July. Photo: @MJShanley3 on Twitter

Mapping street trees is only partly the point of TreesCount! 2015. NYC Parks, the department that oversees street trees in the Big Apple, wants to know what kinds of challenges each tree is facing and how much effort neighborhood volunteers are putting into keeping trees alive. TreesCount! volunteers record the circumference of every tree, their perceptions of the tree’s health, evidence of problems that could interfere with the tree’s growth, and signs of volunteer stewardship—things like mulching, perennial flower plantings, tree guard installations, and more. All of that data will help shape public policy and municipal spending on large scale initiatives to do the yeoman work of urban forestry: digging up and grinding old tree stumps, widening tree beds, removing metal grates encumbering tree roots, and planting more and more trees wherever they can fit.

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Measuring the circumference of a street tree. Photo: @NYCTreesCount on Twitter

And who are these thousands of volunteers stepping up to stroll along the city’s busy sidewalks wearing garish green safety vests and pushing bright orange measuring wheels? It seems people of all ages and backgrounds have offered to help, with neighborhood-based organizations across the city mobilizing local residents with help from NYC Parks. Volunteers complete an online mapping tutorial before hitting the streets with NYC Parks staffers for in-person training. After about an hour of instruction, they fan off in groups of two or three to map a proscribed area of the city.

The whole thing hinges on an elaborate and elegant website developed for TreesCount! 2015 by the incredible team of geo-coders, designers, and developers at Azavea, the Philadelphia-based B-corporation behind the celebrated OpenTreeMap currently in use in cities around the globe. Volunteers can sign up on the website, complete their online training, track mapping progress in any given neighborhood, and check out blocks to map on their own time (after earning the right to do so by attending a training event and another group event hosted by a local organization or NYC Parks).

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The web platform designed by Azavea for TreesCount! 2015.

The website also contains the Treecorder, where volunteers log all of the data they collect in the field and submit it to NYC Parks for quality review. The Treecorder builds on previous efforts by TreeKIT to craft a mobile data entry platform for its mapping method, and the original nugget of code that translates distance measures into mapped points still lives at the heart of Azavea’s intuitive and user-friendly application. Volunteers can interact with the site on any tablet, mobile phone, laptop, or desktop computer, and all of the site code was given an open source license so other cities can adopt and adapt it for their own needs in the future. Anyone involved in building web-based platforms that support citizen science projects would do well to spend some time exploring Azavea’s handiwork. They’ve set a new standard for excellence in this specialized area of web engineering and design.

In addition to developing the mapping method that drives TreesCount! 2015, TreeKIT worked with NYC Parks to design and iteratively refine both the online and field training experiences for volunteers. Ray Cha, a user experience designer with extensive knowledge of online learning platforms, joined the TreeKIT team for this portion of the project. The online learning experience is interspersed with short self-assessments and ends with an “Explore Your Knowledge” quiz that gives volunteers immediate feedback on their understanding of the material. TreeKIT also designed an innovative street tree stewardship identification guide, pulling in horticulture and design expert Emily Vaughn to create the 16-panel foldout guide that NYC Parks is giving out to every volunteer. Dr. Alex Paya, an expert in tree science with a knack for Photoshop, contributed a collection of beautifully processed leaf images for the high-resolution guide, which is printed on tear-proof and waterproof paper for mapping in all kinds of weather.

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The TreesCount! 2015 street tree species ID guide. Photo: Philip Silva

More than sixty local schools, non-profit organizations, and government agencies signed up to serve as partner groups for TreesCount! 2015, hosting training sessions, leading special mapping events, and organizing volunteers to join the effort in every corner of the city. Partnering groups were given the chance to claim a batch of blocks to map on their own local turf, making this census much more of a grassroots initiative than previous tree counts held ten and twenty years ago. As of late July, the Washington Square Tree Counters—a group that formed in response to the census—has already mapped more than 90 percent of the blocks in their patch of Manhattan. They found just over 1,000 trees scattered across the neighborhood. AFROPUNK 2015, a massive music, art, and culture festival slated for late August, is giving out tickets to volunteers mapping trees across a wide swath of Brooklyn. Every one of New York City’s five boroughs is represented by a partnering group, and new groups can still sign up to participate until TreesCount! 2015 wraps up later in the fall.

NYC Parks plans to make the data harvested through TreesCount! 2015 openly available to the public, just like it did with the two previous tree counts (though both ’95 and ’05 were, strictly speaking, just tree counts rather than efforts to make accurate tree maps). A public-facing tree map, sponsored by the city, may someday serve as a convening ground and coordinating tool for the thousands upon thousands of NYC volunteers that help the city care for street trees. Until then, the TreesCount volunTreers (yes, just like the Treecorder, the pun was intended) have plenty of mapping to keep themselves busy.

Philip Silva
New York City

On The Nature of Cities

Get Your Blue Mind On

Art, Science, Action: Green Cities Re-imagined

A review of the “Urban Blue,” the Blue Mind Five Summit, which took place on May 11, 2015 in Washington, D.C.

“Get your blue mind on!” is a frequent expression and admonition of Wallace J. Nichols, known simply as “J” to most of us. J has been a leading thinker, researcher, and activist extraordinaire when it comes to all things related to water. The author of the recent bestselling book Blue Mind (July 2015), he is a passionate advocate for ocean and water environments and for the healing and recuperative powers of water in all its forms. A half decade ago, he began convening an eclectic group of like-minded academicians and others in an intensive one-day conference called “Blue Mind,” a collective exploration of the many different ways that the power of water might be studied and applied.

In late May of this year, J helped convene the fifth of these unusual meetings, Blue Mind 5. For this year’s event, the emphasis was to be on urban blue, and I was honored to have been asked to give the closing keynote for the meeting. In addition to discussing a bit of my own research and writing, a key charge given me was to listen throughout the day and to summarize and synthesize the main themes and overarching conclusions. This was a tough job, to be sure, but a fun one, and what follows here is a modest attempt to put down on paper some of what I learned that day. The meeting took place in the elegant digs of the Carnegie Institution of Science, in Washington, DC.

J Nichols
J Nichols.

It was (and is) a huge agenda, an agenda for a lifetime. How can we be healthier, saner, better human beings through connections with water, and how can we be better stewards of our ocean and water environments? While for many of the participants, the setting for their own research, practice, and activism, was oceans, this was not always the case, and sometimes it was the municipal pool, or the float tank, or the lake, or river. So from the beginning, there were some interesting and stimulating ambiguities, but water in every form imaginable became the subject of our appreciation and celebration that day.

Part of my task was to look for the urban manifestations and implications of the topics being covered so eloquently and insightfully. It was not a hard thing to do. We are an increasingly urban world, and increasingly call cities home; every topic discussed held special meaning and importance in understanding, and perhaps shifting, modern urban life. And many or even most cities are located near water.

The new urban stories of water

J Nichols has an uncanny knack for joining together sometimes disparate speakers, while always extracting synergy and logic emerging from the interactions. The day was largely structured around four main panels: The New Story of Water; Science of Solitude; Sleeping Deeper; and Submergence. I liked the look of the day— topics rarely thought about or considered much by urban planners, but clearly critical issues for us to think about in relation to cities.

The first panel of presentations wondered out loud about the importance and power of storytelling, and ways we frame the stories we create and tell. There was a strong sense that a new story about water was needed, and a helpful shift away from the tired, older story (or stories) we have been telling. The old story of water was a negative one, a pessimistic one. Addressing the immense water and ocean agenda we are collectively facing requires a new kind of story about effective change and a new sense of the appropriate messenger. Ocean advocate Danni Washington spoke eloquently about the need to “change our conversation, to flip the switch, because we’re not going to inspire anyone by telling them that they’re doing horrible things.” The story must increasingly be about the positive benefits and qualities of water, what we love about oceans and water.

M. Layne Kalbfleisch, a cognitive neuroscientist, studies talent and inspiration, and offered insights from her research about how color (blue specifically) enhances mental performance, and the need to better appreciate the ways in which the body’s resting state (its autonomic systems) creates the conditions for daydreaming and imagination. Becoming more in touch with our “endogenous heuristic” (our internal playbook), must be part of the new sensibility. The new story must include, she told us, a new understanding of “water as medicine” (more on this below) and that “water flows in one direction.” Flow in cities is a defining force and a way of fixing relationship and position: some are upstream, others down.

Kalbfleisch played some music for the audience from the group The Stray Birds, specifically a song called “I Dream in Blue,” and then asked us to identify the many references to water (Listen to the song here). It was a convincing point that music frequently contains deep connections and references to water, and also perhaps that we can and must tell these new stories of water in many different ways, including through music, drama, and poetry. Later in the day we heard the moving poetry of Jamie Reaser and saw the beautiful photographs of National Geographic Photographer, Anne Doubilet.

Just and equitable access to water, and its benefits, was yet another theme and another necessary element of the new story. Harvey Welch, of Carbondale, Illinois, described what it was like to be African American, growing up excluded from enjoying public pools. Later in life, he has lead the charge to build a new outdoor public pool, something that has proven harder than expected (and still is not accomplished). It was a reminder of the entrenched inequalities, but also the promise of water as a bridge, as an opportunity to heal past injustices and to create spaces and places for coming together.

Part of the charge in crafting a new story is to think more carefully about who we hold up as purveyors of change. We have relied heavily on a “hero model” of ocean conservation and protection, which was noted by several speakers. Stiv Wilson, with the Story of Stuff, made this point through a provocative self-assessment, pondering the imagery he has commonly used to present himself to the world (and to audiences like ours)—the image is of singular hero, saving the day (an image of him steering a ship during a storm, strong and in charge). The reality is that addressing ocean conservation problems today will require changes in how we buy and consume, as well as through legislation. But it is not to be found in singular herculean acts of saving the day, so much as in more pervasive, collective shifts in our behaviors and buying patterns, and in our political action. Wilson showed a new film about micro-beads and suggested that it might indeed represent, he feels, a more effective way of reaching average people and effecting deep change. Wilson was recently profiled in the New York Times (looking a lot like the hero, ironically), with good news that states continue to enact restrictions on micro-beads in response to consumer concerns (California appears headed for a ban on both synthetic and organic micro-beads). The prospect of state-level restrictions and bans seems enough to shift companies like Proctor and Gamble away from micro-beads in their body and facial scrubs.

I frankly did not know much about micro-beads before Wilson’s presentation, but the inability of conventional water treatment plants to filter them and the possibilities of working their way through and up the aquatic food chain is a scary prospect indeed. It was the first of a number of references that day to the ways in which humans consumption and lifestyle choices negatively impact the blue realm, and in turn our own human health. As is so often the case with water, optimism and pessimism blend together, though the former, thankfully, may be carrying the day. And the issue raises once again the many ways in which the transition to urban lives may induce a mental distance between action and impact (where do those micro-beads go when they slither down the drain?). Yet, the new emerging story is, and must be, that urbanites can be made to care and have more power to effect change than is perhaps commonly thought.

There was a consistent refrain throughout the day about the watery nature of our human biology and physiology, and this was/is another aspect of the re-writing of the new story of water. We are largely made up of water, of course—about 60 percent on average (though it varies by age, gender, and other factors). That we should connect with, and be so profoundly soothed by touching and having contact with water, is not surprising. For me, these repeated references to our watery selves conjure up the ideas of deep ecology that many of us talked about and found compelling in the 1980s. The ideas of Norwegian philosopher Arne Naess that we ought to seek to be at one with a larger “Self” (a “deep” ecology,” in contrast to the more superficial ways in which we adjust our relationship to earth and environment; e.g. Naess, 2010). If we are the water, if we are the river or the ocean, then aren’t we doing harm to ourselves, so the argument goes, when we pollute those water environments? And is there the chance that through seeing greater unity in the world, we will find a way to live less destructively? If our physiology is so inherently watery, does this not bode well for finding deeper caring and connection?

Solitude

The second panel of presenters addressed the subject of solitude, a quality that might seem, on the face of it, to be in short supply in cities. Again, it brought together a remarkable (and unusual) set of thinkers and doers. The sense from these presentations was often not of the potential or promise or benefit of solitude, but just what a difficult relationship we seem to have as a species with the idea. Tim Wilson, who teaches in the UVA Department of Psychology, reported on his fascinating research showing the difficulty subjects have with simply sitting and thinking. We have a difficult time, apparently, just being with our thoughts and through a series of different experiments WIlson has demonstrated just how hard this is for us. In one set of experiments, subjects were asked to sit quietly with their thoughts. They were, however, able to administer a mild but unpleasant electric shock (something demonstrated for them before the experiment began). Remarkably enough, a relatively high percentage of participants shocked themselves (67 percent of men, 25 percent of women), presumably out of boredom (e.g. Wilson 2014). Some shocked themselves repeatedly, rather than sit quietly with their thoughts (and one man shocked himself 190 times!). This result garnered lots of attention in the popular press (and headlines like this one in the Washington Post: “Most men would rather shock themselves than be alone with their thoughts” see Feltman, 2014: ).

James River Kayaker
A kayaker on the James River.

Cities in some ways are an antidote to boredom. They are rarely boring places, and often the problem is finding places and opportunities where quiet reflection is possible. I remain convinced that humans need the time to and places where they can sit, recharge, reflect, and ponder intensely or not at all. And these places must increasingly be in cities. Designing and planning these opportunities ought to be a major task of city planners, and for me it is the daily connections with nature—whether watching and hearing a bird or sitting in a small park or tending a garden—that can provide those moments of quiet solitude. Perhaps we are inclined to shock ourselves (especially men, it turns out) in part because of where we are: that we are stuck in a room, locked in a stifling interior space with little that is uplifting. In an era where many feel bored waiting for the traffic signal to change and reach for our iPhones, is such a response perhaps partly learned behavior?

Water in cities represents some of the best opportunities we have to create conditions and circumstances for solitude, squeezing these experiences (in both a spatial and temporal sense) into cities. Solitude must surely be partly about putting us in the present moment, enjoying the sound of our own breath and the heave of our lungs, quietly watching, listening, being mindful. And the watery realms in and around cities often offer the best chances for finding these experiences, whether floating on a kayak on the James River or sailing in Boston Harbor.

One of the best examples demonstrating the therapeutic power of water in a city is Paley Park, a remarkably small park (1/10th of an acre in size) located in highly-developed midtown Manhattan. Designed by landscape architect Robert Zion, it opened in 1967, and has been delighting residents ever since. It is small space providing a quiet respite and source of solitude. It has trees and potted plants and “vertical lawns” (Zion’s words for describing the ivy walls that flank the space), but it is the roaring 20-foot tall waterfall that is the park’s most impressive feature. Seeing and listening to this waterfall is what makes this park so enjoyable, providing an element of unusual solitude. Paley helped to usher in new thinking about the power and potential of small spaces—pocket parks, parklets—and perhaps the need to look for all possible ways to include one or more water features. The Project for Public Spaces (PPS) has declared Paley to be one of the best parks in the country and biophilic design expert Bill Browning frequently uses it as a prime example of the “presence of water,” a key biophilic design principle (Browning, 2014; see his terrific 14 Patterns of Biophilic Design here).

Solitude and adversity developed as another theme over the course of the day. Matt McFadyen told a gripping story of being trapped under a sailboat in the Southern Ocean, moments from death, and an equally harrowing journey to the North Pole. Water tests us in many ways, and some of these experience seem more to fall under the heading of solitude under duress. Other speakers over the course of the day described similar struggles; for instance, Blue Mind alum Bruckner Chase, a self-described “endurance waterman,” described his struggles competing as in ironman competitions. There is the suggestion that through struggle and endurance and, sometimes, even through failure and defeat, there is a closeness and affection for these challenging environments; such struggles provide the portal or platform for deeper connections and perhaps for a degree of humility that is helpful in interacting with the ocean world.

MATT_BIOPAGE_1
Matt McFadyen at the North Pole.

Jamie Reaser, artist and poet, re-framed the challenge as one of “bringing people into their inner wildness.” It may have been the first explicit reference of the day to wildness as a positive, desired attribute, but the wildness of oceans and water bodies was implicit in a number of presentations throughout the day. In the sense of vastness and in the largely uncontrollable power of nature are the possibilities of experiencing awe and wonder. I have often spoken of the need for “cities of awe,” that seek to maximize and facilitate these emotions, and water in and near cities is a major opportunity for this.

Reaser argued that we need solitude “to become fully human,” and made a critical distinction between solitude and isolation (a seeking of “apartness” and a more disconnected state). Solitude is as much about feelings of connectedness and relationship; to achieve this need does not require us to require us to escape to a distant place where there are no or few people. That is good for cities and the planet.

Sleeping deeper

The profound importance (emotional, health) of sleep is sometimes overlooked, and a fourth major panel addressed the question of Sleeping Deeper. Here there was the very personal and wrenching story of Bobby Lane, a marine veteran grappling with PTS and suicidal impulses. He told a meandering but compelling story of how he discovered surfing. Surfing saved him. After experiencing this, he tells of having his first night of real sleep in a long time. The power of water brought him back from the brink.

Sleep itself is an essential human need and so many things in cities have proven to be disruptive to sleep—artificial light, for example, and excessive noise from car traffic, landing aircrafts, and building construction, among others. There is growing recognition of the negative health impacts of bad sleep and the beneficial, health-enhancing effects of good sleep, so it makes great sense for planners and urbanites to give this topic more attention.

Bobby Lane is a living example of how spending time in, on, or near water can be part of the answer to good and healthful sleep. This is further support for the many ways that cities might nudge its residents to enjoy these forms of nearby nature and beneficial health outcomes that would result. Good sleep could result from other urban interventions, of course—real efforts at controlling both light and noise pollution would be a start—but I am convinced we often overlook the “blue gym,” to use the language of Michael DePledge, all around us as a partial antidote (e.g. DePledge, 2009).

Justin Feinstein, a neuroscientist with the Laureate Institute for Brain Research and co-founder of FLOAT, provided an interesting connection between water and good sleep in his presentation. His work has focused on the beneficial effects of spending time in float tanks. It was a fascinating look at the power of this technology in addressing and enhancing urban health more broadly. Spending time immersed in the quiet, dark, soundless environment of a float tank quiets many parts of the brain, and studies show it helps to reduce anxiety and stress and helps us to relax deeply. The studies are more numerous and extensive than I had imagined (27 studies at least; see floatboston.com, undated). These benefits have been shown to last for months. I came away convinced of the utility of a network of float tanks in cities, though I struggled a bit in understanding the planning and public policy implications of float tanks.

flotation-tank
A float tank.

Feinstein’s presentation also made me ponder the value of floating in cities more generally and the opportunities to do so there. Perhaps less an opportunity for quieting the brain, events such as the Big Float in Portland, Oregon, do provide the chance to sit on and slowly move through the water spaces of a city.

More generally, the theme of water and shorelines as medicine re-emerged; it’s one of the most important take-aways. In urban planning and design, there has been a growing recognition of the ways that bad urban form (e.g. unwalkable, car-dependent sprawl) can make us sicker and can inflict a host of health problems. We have been less quick to recognize the inverse, that many urban landscapes (designed and natural) can be profoundly therapeutic and health-enhancing. Bluescapes seem especially to be potent forms of medicine.

Several recent studies by Michael DePledge and his team at the University of Exeter in the UK show the power of proximity to water. In one large study, self-reported health increased with proximity to the coast. In another series of studies, participants were shown and asked to react to a photographs, some containing water. “As predicted,” DePledges team concludes, “both natural and built scenes containing water were associated with higher preferences, greater positive affect and higher perceived restorativeness than those without water.”

And this recognition (or re-discovery, more accurately) has lead to new design directions in blue urbanism. Recent examples include the installation of the new Spaulding Rehabilitation Hospital on Boston harbor, along its HarborWay trail. The building is designed to provide extensive views of the harbor through lowered windows in patient rooms, for instance, and from ground level rehabilitation spaces. It is remarkable, in a way, that we have not fully utilized the healing powers of water, so nearby and so often overlooked as potent therapy and medicine.

Spaulding rehab hospital Boston
A Spaulding Rehab Hospital room in Boston.

Submergence in the city: partial and full

Finding ways to float in city, whether in an enclosed tank or as you’re drifting down a river, will deliver benefits. Submergence takes the relationship even further (though to float implies at least partial submergence) and opens up yet another set of ways to relate to water and the topic of the fourth panel. Again, it was a fascinating and eclectic group of presenters.

Bruce Becker, a physician from the University of Washington, reported on his research using water immersive therapies. His extensive body of research shows how valuable even shallow immersion—with water up to one’s shoulders—can be for the body (e.g, Becker, 2011). Most of his work and practice have been in pool settings. The physiological benefits are remarkable, as immersion significantly increases blood flow to the kidneys, for instance, and the relaxation benefits are equally great.

James Nestor, author of the best selling book DEEP, took us on an amazing story of water immersion of a deeper sort. He reports on the remarkable story of freedivers, who risk their lives to dive and swim to incredible depths (some up to 700 feet). One of the more fascinating aspects of the story is discovery of the ways in which the human body is able to adapt and protect itself at these incredible depths. The “master switch of life,” a set of protective reflexes that shifts blood flow to the body’s core and lowers heart beat to conserve oxygen, kicks in. This is more convincing evidence about the watery origins and deep connections we have to oceans and water, embedded in our basic biology.

So what about submergence in cities? How does this concept relate to modern urban planning and emerging ideas of blue urbanism? One is the possibility of swimmable waters in and near cities—harbors, ports, near-shore waters of various sorts. There certainly is a trend in cities aspiring to swimmable (and fishable) waters as an enhancement to quality of life and health. Cities such as Copenhagen have famously opened public swimming areas in the hearts of their former ports where, in the past, industrial water quality would have made swimming unhealthy. Other cities from Berlin to London have taken, or are taking, steps towards outdoor urban swimming. New York city has recently unveiled a plan for creating a river swimming area as a part of its Hudson River Park.

Copenhagen harbor swimming
Swimming in Copenhagen harbor.

The Becker and Nestor presentations provide interesting contrasts in submergence—from shallow to very deep. The shallower opportunities seem more present in cities, but as we seek to better understand and connect to the amazing marine life and biodiversity in coastal and marine cities, opportunities for deeper submergence should perhaps also be a goal. Here I am reminded of Steve Journée, who dives nearly daily in the Wellington (New Zealand) harbor. Urban diving may be a logical counterpart to swimming, with different but complementary benefits. Journée recently published a fascinating book of photographs of the underwater life of that harbor (Journée, 2014). Cities can be, and often are, venues for such deeper forms of submergence, and this may be good for both people and cities.

Which brings me to the beautiful underwater photography of Anne Doubilet, who has for many years traveled the world, diving and photographing for National Geographic. Her photographs are wondrous and magical and provide a visual mechanism that might, we hope, provide emotional connections to organisms and worlds otherwise hard to experience directly. A major challenge today is how to foster that deeper connection and caring for marine worlds that are largely out of sight. Few of Doubilet’s remarkable photos are taken in urban environments (though she lives in Manhattan). But they could be and, like Journée’s, they might help to forge a new understanding of and curiosity about what lies below the surface in urban areas—what is just beyond the bulkhead or pier or roadway. Doubilet’s photographic skills are needed, desperately, to capture these underwater city wonders.

Papua New Guinea: ALD with cameras underwater on reef.
Papua New Guinea: Anne Doubilet with cameras underwater on reef.

Towards a blue-minded urbanism

Traveling back home at the end of this long day, I pondered why this event felt so different to me. It was in part that I gave it—and the presenters—my full attention. But it was more than that. It was a day devoted to examining—carefully, methodically examining, from many different perspectives and angles—something that is ubiquitous: water. And the methods and presentations came at the promise and value of water in so many different ways. There were academics and researchers, but there were also physicians, activists, artists, and water practitioners of various kinds. And often they wore multiple hats, viewed the world through multiple lenses. Rarely do you find these different people and perspectives on the same agenda, rubbing shoulders at a conference. It was an intentional mash-up in these ways and I am sure that J Nichols compiled his eclectic list of invitees and presenters with this clearly in mind.

It was an exceptional day for considering a full range of ideas that don’t necessarily find their way onto urban planning syllabi—solitude, submergence, deep sleep, the need to craft and tell new stories. These are ideas, bodies of research and thought, that have truly remarkable implications for health and happiness and meaning for the future design and planning of cities.

At the beginning of the day, J Nichols handed out small blue marbles to everyone and explained how we might use them to think about our blue planet. The marble represented the small, resilient, but fragile planet on which our existence depends. Something to think about but to act upon as well. He extolled us to pass the marble on to someone else—as an act of blue gratitude. It is a creative idea to raise awareness and model some behavior we want to see. The Blue Marble Project, which began in 2009, has now seen millions of blue marbles change hands and millions of thoughts of gratitude and hope pass from person to person. I have a vision of blue marbles turning up at city council meetings, mayoral campaign stops, and community meetings of various kinds. I know I will be handing some out.

J Nichols with blue marble
J Nichols with blue marble.

Tim Beatley
Charlottesville

On The Nature of Cities

References

Becker, Bruce, 2011. Comprehensive Aquatic Therapy, Washington State University Press, 3rd Edition.

Browning, William, 2014. 14 Patterns of Biophilic Design, Terrapin Bright Green, Washington, DC, found here: http://www.terrapinbrightgreen.com/report/14-patterns/

DePledge, Michael, 2009. The Blue Gym: health and wellbeing from our coasts,” Mar Pollut Bull. 2009 Jul;58(7):947-8

Eriksen, Marcus et al, 2014. “Plastic Pollution in the World’s Oceans: More than 5 Trillion Plastic Pieces Weighing Over 250,000 Tons Afloat at Sea,” PLOS One, December 10, found at:

FloatBoston.com, undated. “Floating and Anxiety,” found at: http://www.floatboston.com/floating-and-anxiety/

Journee, Stephen, 2014. Wellington Down Under, Wellington, NZ: Grantham House.

Naess, Arne, 2010. The Ecology of Wisdom: Writings by Arne Naess, Counterpoint Press.

Nestor, James, 2015. Deep, Eamon Dolan/Mariner Books.

Nichols, J. Wallace. 2014. Blue Mind: The Surprising Science That Shows How Being Near, In, On, or Under Water Can Make You Happier, Healthier, More Connected, and Better at What You Do, New York: Little, Brown and Company.

Wilson, Timothy et al, 2014. “Just Think: The Challenges of the Disengaged Mind,” Science Magazine, 4 July, found here: https://www.sciencemag.org/content/345/6192/75?related-urls=yes&legid=sci;345/6192/75

Ecologically Smart Cities: Keeping Urban Ecosystems Centre Stage in India’s Smart Cities Programme

Art, Science, Action: Green Cities Re-imagined

On a path of accelerated urbanization, India is going through substantial changes in its land cover and land use. In 1950, shortly after Indian independence, only 17 percent of the country’s population lived in cities. Today, India’s urban population stands at 33 percent. India contains three of the world’s ten largest cities—Delhi, Mumbai, and Kolkata—as well as three of the world’s ten fastest growing cities: Ghaziabad, Surat, and Faridabad. In the past two decades, the area covered by Indian cities has expanded by a staggering 250 percent, occupying an additional 5,000 km2 of India’s surface with concrete, asphalt and glass (Nagendra et al., 2013). Projections indicate that more than 50 percent of India’s people will be living in cities by 2050 (United Nations, 2014). This massive urbanization will pose large scale challenges for urban resilience and sustainability, especially for the poorest and most vulnerable: the urban poor, migrant workers, traditional village residents.

“Smart cities,” a program of focus of the Indian government, are considered to hold promise to resolve major challenges of urban sustainability. This approach is driven by a belief in the supremacy of technology for the efficient management of urban growth. Yet other equally, if not more, significant issues of the importance of nature and the restoration of thriving ecosystems for the wellbeing and health of people in cities demand  attention. A systematic focus on urban ecosystems, via the protection of urban commons, is essential to provide a robust, adaptive, and resilient pathway towards greater urban sustainability.

The environmental consequences of the rapid growth of cities are starkly apparent. Urban expansion has degraded and destroyed natural habitats across most Indian cities and small towns, transforming urban forests, lakes, and wetlands into polluted travesties of their former ecological vigor, and converting them into vast expanses of concrete construction. Why should we care about the impacts of urbanization on ecosystems? In part, of course, because of their intrinsic value. In addition, though, urban ecosystems are essential for human health and wellbeing and, ultimately, for urban resilience.

1. Trees provide shade for all, including vulnerable groups such as street vendors in Bangalore
Trees provide shade for all, including vulnerable groups such as street vendors in Bangalore.

Urban ecosystems provide a range of important ecosystem services that are critical for the sustainability of cities. Wetlands clean up water contaminated with industrial pollutants and sewage, while trees strip the air of pollutants. For instance, coastal wetlands provide protection against flooding to parts of Navi Mumbai, an extension of the city of Mumbai (Nagendra et al., 2013), while inland wetlands buffer the city of Chennai from flooding during heavy rains (Nambi et al., 2014).

Trees in Bengaluru clean polluted air and provide shade for street vendors and pedestrians, reducing the levels of harmful pollutants such as suspended particulate matter and sulphur dioxide (Vailshery et al., 2013). Services such as these are termed “regulating” services because they regulate the environment. Important “supporting” ecosystem services, such as the provision of habitat for migratory birds and bats, are provided by urban ecosystems such as the coastal wetlands of Mumbai and parks in Bangalore (Nagendra et al., 2013).

2. A park in Bangalore provides a refuge for large colonies of the fruit bat
A park in Bangalore provides a refuge for large colonies of the fruit bat.

Urban ecosystems also provide important cultural and recreational ecosystem services. Ecosystems hold an important place in the cultural landscape of urban India through their sacrality and worship (Nagendra et al., 2014). Exposure to green spaces provides wellbeing and psychological relief from urban stress. Parks, lakes and coastal beaches act as important social nodes of congregation, strengthening social bonds between disparate, anonymous urban residents.

3. In the heart of the city, children engage in a time honored favorite activity - climbing trees!
In the heart of the city, children engage in a time honored favorite activity—climbing trees!
4. Children from wealthy residential areas and local slums working side by side, painting leaves and stones at an urban lake festival in Bangalore
Children from wealthy residential areas and local slums working side by side, painting leaves and stones at an urban lake festival in Bangalore.

The importance of urban regulatory, supporting and recreational services are widely recognized by the public, as well as by policy makers and planners. Yet there has been a systematic decline in the availability of urban ecosystems for provisioning ecosystem services across Indian cities. In almost all Indian cities, lakes, tree cover, grasslands and wetlands once provided food, fodder, fuelwood and other important resources. These ecosystem products are still consumed by many, from cattle owners and fishers to migrant workers and the poor. For instance, the mangroves of Mumbai are used by thousands of local residents for collecting fodder, fuelwood, and food, while lakes in many parts of Bangalore continue to provide fodder for cattle, and supply milk and fish to city residents. These areas historically functioned as urban commons, providing collective resources for the entire community in times of scarcity and need.

5. Goats grazing at a lake in Bangalore
Goats grazing at a lake in Bangalore.

However, local planners and governments have permitted the large scale conversion of these areas for urban development. It is only in recent years, in particular after large scale flooding in 2005, that the utility of maintaining mangrove habitats for flood protection and lakes for ground water recharge became recognized, prompting the protection of these habitats (Parthasarathy, 2011). The motivation for such protection has been the urgent need to maintain regulatory ecosystem services, while the importance of production services for the resilience of the poorest and most vulnerable has been largely ignored in official planning discourse. For example, many lakes across Bengaluru are now being restored in response to ground water depletion, following citizen protests by affected local communities.

6. Community protests to save a polluted lake in Bangalore
Community protests to save a polluted lake in Bangalore.

Yet the protection of lakes has an often ignored, yet important social consequence: while lake ecological condition improves, restored lakes are typically fenced and gated to keep out grazers, washermen (dhobies), fishers and other traditional users.

7. A sign in Kannada announces that fish are available at a local lake in Bangalore-1
A sign in Kannada announces that fish are available at a local lake in Bangalore.

Urbanization thus not only leads to specific patterns of change in ecosystem use: it also leads to specific types of change in the perceived value of specific types of ecosystem services, shaping wide ranging policies that regulate access to and management of these former urban commons.

Regulatory and recreational ecosystem services have systematically taken precedence over productive uses of ecosystems in the minds of the urban public, the media, and city administration. In turn, urban ecosystems have transformed from commons or common pool resources used by communities for shade, water, grazing, fishing, and fuelwood collection, to protected lakes, parks, and mangrove forests that belong to the state, valued for public ecosystem services such as ground water recharge, recreation, and flood protection.

8. A tree branch provides shade and shelter for a makeshift cradle, holding the sleeping child of a street vendor in a Bangalore park-1
A tree branch provides shade and shelter for a makeshift cradle, holding the sleeping child of a street vendor in a Bangalore park.
9. Water collected from a depression in a dry lake bed is an important resource, used by the inhabitants of a tented skum-1
Water collected from a depression in a dry lake bed is an important resource, used by the inhabitants of a tented slum.

In this process, many of the urban poor—whose livelihood resilience, health, and nutritional levels depended on access to provisioning ecosystem services—have been the worst affected, losing access to the services provided by natural ecosystems due to the dual processes of privatization for urban land use and public protection for conservation (Mundoli et al., 2014).

10. An advertisement for a private butterfly park in a new residential complex in Bangalore
An advertisement for a private butterfly park in a new residential complex in Bangalore.

The massive scale of urbanization in India will undoubtedly pose challenges for the country’s environment, ecology, society, and sustainability. Responding to these challenges will require sustained attention to devising and implementing appropriate policies for ecologically sustainable urban growth. The current focus on smart cities in India is driven by a search for technological fixes. Yet the restoration of thriving ecosystems as urban commons, which can ensure the wellbeing and health of a wide strata of people in Indian cities, requires equal attention. A systematic focus on urban ecosystems is essential and can provide a relatively inexpensive, adaptive, robust, and resilient approach for enhancing urban sustainability. Better protection, management, and use of urban ecosystems will be essential for urban sustainability in the era of the Anthropocene.

An ecologically smart city may be the smartest city one can envisage! Such an approach would increase the resilience of cities by providing low-cost, adaptive, and efficient ways to deal with the challenges of providing safe food, pure water, and clean air for unprecedented and growing numbers of people. To create ecologically smart cities, a systematic focus on urban ecosystems is required, restoring their original function as urban commons that provide important provisioning, regulatory, recreational, and supporting ecosystem services. Such ecologically smart cities would be low-cost, adaptive, and resilient to a whole host of local and global environmental challenges, from pollution and food insecurity to climate change.

Harini Nagendra
Bangalore

On The Nature of Cities

This essay originally appeared on UGEC Viewpoints.

References

Mundoli, S., Manjunatha, B., Nagendra, H. 2014. Effects of urbanization on the use of lakes as commons in the peri-urban interface of Bengaluru, India. International Journal of Sustainable Urban Development  DOI: 10.1080/19463138.2014.982124.

Nagendra, H., Sudhira, H.S., Katti, M., Schewenius, M. 2013. Sub-regional assessment of India: Effects of urbanization on land use, biodiversity and ecosystem services. In Urbanization, Biodiversity, and Ecosystem Services: Challenges and Opportunities, ed. Thomas Elmqvist et al., Chapter 6, pp. 65-74

Nagendra, H., Unnikrishnan, H.,  Sen, S. 2014. Villages in the city: spatial and temporal heterogeneity in rurality and urbanity in Bangalore, India. LAND 3: 1-18.

Nambi, A.A., Rengalakshmi, R., Madhavan, M.,  Venkatachalam, L. 2014. Building urban resilience: assessing urban and peri-urban agriculture in Chennai, India. United Nations Environment Programme (UNEP), Nairobi, Kenya.

Parthasarathy, D. 2011. Hunters, gatherers and foragers in a metropolis: commonising the private and public in Mumbai. Economic and Political Weekly XLVI: 54-63.

United Nations. 2014. World Urbanization Prospects: The 2014 Revision. United Nations Department of Economic and Social Affairs, New York.

Vailshery, L.S., Jaganmohan, M., Nagendra, H. 2013. Effect of street trees on microclimate and air pollution in a tropical city. Urban Forestry and Urban Greening 12: 408-415.

How Does Your Garden Grow? Stories from South African Gardeners

Art, Science, Action: Green Cities Re-imagined

Why do we plant what we do in our personal gardens? It turns out it’s driven by a complicated mix of personal philosophy and social posturing, which sometimes are at odds. And, it turns out, in South Africa and many other countries, we don’t even plant our own gardens. This is done by “unskilled” and immigrant laborers. We talk a lot about gardens in the nature of cities, but what of gardeners, especially as part of the labor force?

Strelitzia_TNOC photo
Plantings in one interviewee’s garden.

In South Africa, most middle class homes will have a gardener. Gardeners in this country are nearly always men and, reflecting the apartheid history of our country, are nearly always black. Gardeners are generally paid as unskilled labor at shockingly low rates. Shamefully, gardeners in South Africa are still often referred to as garden ‘boys’. One can only speculate that making grown men feel diminutive in this way arose as a function of historic issues around race, gender, and hierarchy, where the garden is traditionally the domain of the woman of the house and having a ‘boy’ working for a woman, in her space and taking her orders, was somehow more socially acceptable than having a man working for her.

Origins aside, the term persists today, suggesting that little has changed in relation to race and power in this particular arena in South Africa in the last 20 years. South Africa’s unemployment rate is measured conservatively at over 25 percent (Statistics South Africa, 2014). Gardening is an entry point to the job market for supposedly “unskilled” labor. A graphic example of the dire need for work and the role of ‘gardener’ as a catchall entry point is given by Kingdon and Knight in their 2001 paper on unemployment in South Africa, which reported a staggering 39,000 applications for 35 permanent jobs advertised for gardeners and cleaners at the University of Cape Town (Kingdon and Knight, 2001).  Many gardeners do find themselves in more permanent positions, but must often juggle a number of gardening jobs on rotation through the week. In addition to local South African men, gardening has become a common occupation for migrant labor in South Africa.

Gardener Samson Malunga.
Gardener Samson Malunga.

The men who tend these gardens make large contributions to the overall ecology and ‘nature’ of our cities. Interested in the dynamics between those directing their garden desires (garden owners) and the implementers of these desires (gardeners), I decided to speak to some gardeners in Cape Town. What brings them into this field of work? How do they view their roles as the ‘enactors’ of other people’s views of nature and greenery? For the purposes of this essay, I only spoke to a handful of gardeners, but this marks the start of a larger project and more interviews will be necessary to confirm the preliminary views noted below. Out of respect for concerns around privacy, in particular for those foreign nationals working in South Africa who expressed concerns about legitimacy and xenophobia, the names used here have been changed. However, interviewees were mostly happy to have their photographs taken and shared.

With the exception of one migrant gardener from Malawi who is a professional teacher, all the gardeners I spoke to consider themselves skilled workers with a deep understanding of plants, nature, seasonal cycles, and soil. Several of the gardeners I interviewed voluntarily shared photographs with me by mobile phone of the gardens in which they work: their desire to share pictures of their work is indicative of pride in that work. All the garden photographs shared in this blog are courtesy of Isaac Mgedezi and Samson Malunga. The universal willingness to be interviewed and the enthusiasm with which gardeners approached the interview gave me the impression that this was a group of people who had never been asked about their jobs in a professional manner and were delighted to have the opportunity to share their views and insights. I make particular reference to this as I am confident that this is not how these men are perceived by most people that employ them. The first ‘discomfort’ I will note emerges here, around perceptions of ability, understanding, and professionalism.

Isaac_TNOC photo
Gardener Isaac Mgedezi.

“We are farming people”

All the gardeners I interviewed had grown up in rural neighborhoods and gardened alongside parents or grandparents as children. All had fond memories of these childhood spaces or ‘first landscapes’ and were confident that these early experiences had informed their interests in nature and gardening. The Malawian gardeners all looked somewhat dumbfounded when I asked where they learnt their gardening skills, and while they noted that they grew up in family gardens, the much more emphatic response was generally: ‘I am Malawian, we are farming people’.

With the exception of one gardener who sometimes takes his son to work with him when he helps out in a community food garden close to his home, none of the gardeners was currently raising his children with the same degree of exposure to gardens and gardening that he had in his own childhood. While the gardeners have confidence and pride in their role in molding the gardens of our cities, the lowly pay and lack of professional recognition and security are all aspects they do not wish for their children. Their repeated references to very low wages, persistent poverty, the constant need to search for extra days of work here and there, and the relief expressed by those who have permanent jobs, all speaks to the very difficult emotional and economic space occupied by gardeners in South Africa.

ANother favourite garden_TOC photo
One interviewee’s favourite garden. Photo courtesy of the gardener.

Another apparent discomfort emerges around issues of power and autonomy. Gardeners expressed deep frustration at not having their views and understanding of the workings of plants and soil taken seriously. This is a consistent theme: gardeners feel the garden owners who, in their view, have less understanding about gardening, should be more willing to listen. Isaac said, ‘I get frustrated when my expertise is not respected … I really understand soil and what can grow in different soils’.

Pot plants_TNOC_photo
Potted plants from one of the gardens.

There are, of course, references made to particular garden owners who do consult their gardeners, who open opportunities for discussion, and—in one instance—who even allows the gardener to accompany them to the nursery and on the odd shopping trip. However, these cases were certainly the exception. One gardener expressed irritation at having to share his workspace with another gardener who comes on a different day. Andrew Makwena says, ‘I don’t like to work with others. I speak to the seeds and flowers I plant and don’t want someone else interfering with that’.

In addition to not liking the interference of others in the work of the garden, Andrew gave a fascinating insight into the frustrations of working in space owned by others. He talked of pruning roses and then watching buds emerge and going every day to see how a single bloom is coming along, only to arrive at work one day to find the flower ‘gone, cut off and taken away into the house’; his immense disappointment and irritation at this aspect of working in other’s gardens was apparent.

Andrew_TNOC photo
Gardener Andrew Makwena.

Dream garden

I asked each gardener what their own dream garden would look like. Most called for more order, less mock wilderness; all desired an element of productivity, with a food garden included. All wanted a lawn on which to ‘lie in the sun’ and ‘play with the kids’. On the whole, they wanted flowers, too, with a particular preference expressed for Agapanthus africanus flowers. Only the teacher, Devout Masuso, an economic refugee currently working as a gardener, expressed impatience over the planting of flowers, saying he would not waste his time with flowers but would plant his favorite Malawian fruit and vegetables such as ‘impiru’, a leafy green which he described as quite delicious. One gardener drew a blank in response to my question, responding, “I really don’t know. I can’t imagine. I think you need money to be able to dream like that.”

Most of the gardeners acknowledged sharing information on plants and gardening techniques with other gardeners they know. Several agree that they move plants around, in particular from the gardens they work in to those of their rural homes. Isaac says the last time he went back to the Eastern Cape to see family, he took several cuttings of flowering plants home with him. The gardeners’ homes in Cape Town are generally too small to allow for any gardening. Spaces are shared, overcrowded, and not owned by the gardeners themselves.

Devout_TNOC photo
Gardener Devout Masuso.

My interviews suggest that gardeners in South Africa occupy a shadowy space where they seldom fall under the direct gaze of anyone in their professional lives. They all relished the opportunity to speak of their work and expressed frustration at being under-recognized in their professional capacity. Discomforts are evident around recognition and autonomy. My interviews reveal a community of interested and engaged gardeners with a keen understanding of the plants, seasonal rhythms, and soil; they are hungry for professional recognition.  These men operate in networks where they share ideas, information, and plants with each other. They are working in multiple gardens in our cities and green spaces in our broader landscapes. These are the people who tend the 20–30 percent green cover that our gardens represent in the ever-increasing footprint of the cities of the world. I think there needs to be greater social acknowledgement, greater engagement with these critical players in our urban ecological space. The informing role of gardeners certainly warrants further investigation.

Just as in real life, the representation of gardeners in literature is few and far between. Where reference to gardens abound, the gardeners are largely overlooked. A quick inventory gives us little more than the foolish, two-dimensional gardeners in Lewis Carroll’s Alice in Wonderland, old Ben Weatherstaff in Frances Hodgson Burnett’s The Secret Garden, and Michael K in J. M. Coetzee’s The Life and Times of Michael K. [picture of the Alice in Wonderland Gardeners] Michael K demands the most attention, and ideas around gardening and being a gardener are threads that weave their way throughout the book. K gives us the best plea for the gardener, suggesting the gardener’s role as knowledge broker between the earth and those that live on it:

‘…  enough men had gone off to war saying the time for gardening was when the  war was over; whereas there must be men to stay behind to keep gardening alive, or at least the idea of gardening; because once that cord was broken, the earth would grow hard and forget her children, that was why.’

Pippin Anderson
Cape Town

On The Nature of Cities

References cited

  1. http://www.statssa.gov.za/presentation/Stats%20SA%20presentation%20on%20skills%20and%20unemployment_16%20September.pdf
  2. http://www.csae.ox.ac.uk/workingpapers/pdfs/2001-15text.pdf

 

alice

“The gardeners in Alice in Wonderland are out painting the flowers. ‘Would you tell me,’ said Alice, a little timidly, ‘why you are painting those roses?’ Five and Seven said nothing, but looked at Two. Two began in a low voice, ‘Why the fact is, you see, Miss, this here ought to have been a red rose-tree, and we put a white one in by mistake; and if the Queen was to find it out, we should all have our heads cut off, you know.”

How Tactical Urbanism “Adds Up”

Art, Science, Action: Green Cities Re-imagined

A review of Tactical Urbanism: Short-term Action for Long-term Change, by Anthony Garcia and Mike Lydon. 2015. ISBN 9781610915267. Island Press, Washington. 256 pages.

Tactical Urbanism: it’s one of the buzz words in the emerging people-centred planning paradigm. If you do a Google News search of the term, you’ll find articles from all the news sites beloved by urbanists: Next City Daily, CityLab, Slate, ArchDaily, et al. Often used in the context of citizen-led improvements to the urban environment, it can mean everything from small beautification projects to major city-led revitalization efforts. To me, it evokes images of renegade city-dwellers armed with spray paint, bollards, and patio furniture, taking urban planning matters into their own hands to improve their small piece of the city. But Tactical Urbanism can mean a lot of things: there is no unified definition to place it into the larger dialogue about citizen action in urban planning.

TacticalUrbanismCoverThese many meanings are captured in Tactical Urbanism: Short-term Action for Long-term Change, a book by American urban planners Anthony Garcia and Mike Lydon, both leaders in civic advocacy and principals of The Street Plans Collaborative. By clearly laying out what tactical urbanism is—the authors define it simply as an approach to neighbourhood building and activation using short-term, low-cost, and scalable interventions and policies (in other words, according to Professor Nabeel Hamdi, Tactical Urbanism is “making plans without the usual preponderance of planning”)—the groundwork is laid to build on this theory of change by providing successful examples and providing guidance for making it work in practice.

I found it to be an accessible read, heavy on place-based examples, personal narratives, and photographs, while touching on planning and public space theory. As a person who studied urban planning and is most interested in working in the community sector, I found this book to effectively bridge the worlds of quick and visible on-the-ground action with less exciting but very rigorous long-term planning that sets out comprehensive frameworks for development. It also does a great job of celebrating the many successes of citizen-led action, while acknowledging an integral part of the iterative “build-measure-learn” cycle of tactical urbanism: having the courage to fail.

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The Tactical Urbanism cycle: It’s about trying things out, then continually adapting and refining.

I found the tone to strike a positive yet pragmatic balance: it has a “you can do it” inspirational voice, but includes frank discussion of the bureaucratic obstacles that continue to prevent the kinds of straightforward, low-cost interventions championed in the text. This left me with the impression that it is possible to create lasting change in one’s community—but don’t expect it to be smooth sailing. A note on terminology: while this book uses minimal planning jargon, the term tactical urbanism itself may not resonate widely in its attempts to capture a movement that presents an alternative to the long-range municipal planning processes that shape our cities. An alternative term used by New York’s Project for Public Spaces is “lighter, quicker, cheaper”. Jaime Lerner’s term “urban acupuncture” also seems to have leverage with a non-planning audience, although it refers specifically to pinpointing vulnerable areas and then using design to re-energize them. “Trial-and-error urbanism” might also capture Garcia and Lydon’s framework: rather than spending a lot of time, money, and resources on coming up with the best plan, we would do better to test things out on a small scale to see if there is potential for wider applicability and sanctioned change.

I found the weaving through of examples that illustrate how we shape our cities by doing something in the short-term, with the view of changing conditions for the long-term, to be immensely helpful in understanding the strategic nature of tactical urbanism. While any intervention that alters the urban landscape, such as yarn bombing a chain-link fence or adding life to an underpass with graffiti or paste-ups, can change people’s perceptions of a space, what makes tactical urbanism tactical is its efforts to shift thinking and patterns of development by demonstrating what is possible with a little creativity and often a whole lot of DIY smarts.

Throughout the book, Lydon and Garcia highlight examples in which an unsanctioned project was eventually supported by government—often a city’s planning or public works agency. This gradual shift from unsanctioned to sanctioned can ease some of the burden of project maintenance on volunteers while allowing cities to take leadership on facilitating bottom-up planning. However, the authors embrace the idea of having a spectrum of projects, from those steeped in DIY culture all the way to “tactical economies”, such as setting up pop-up businesses to attract private investment in a stagnant area. Not all tactical urbanism efforts will be okayed by government, and that should not necessarily be the end goal of citizens looking to test out urban interventions.

This dance between citizen-led action and long-term policy change was a motif throughout the book, and one that I think has potential to provoke conversations about shifting public participation in planning from “show-and-tell” to deep collaboration. It was incredible to read about such a range of stories about projects that began as one-off, localized efforts but have now been scaled up or out by budging municipal policies. For example, on a recent visit to Portland, OR, I noticed that neighbourhood intersections were often adorned with murals.

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A welcoming intersection in Portland’s Sunnyside neighbourhood

Turns out, this is thanks to a crew of Portlanders who, concerned about road safety in their neighbourhoods, obtained a block party permit to undertake “intersection repair”: painting a mural across the intersection, adding a tea station, community bulletin board, and more. Despite initially meeting resistance from the Portland Bureau of Transportation, the group persisted, demonstrating improvements to quality of life through resident surveys. Eventually, the City saw the light: facing a decrease in funding for art and public spaces, yet needing to fulfill livability and sustainability policies, they eventually adopted an Intersection Repair Ordinance. Examples like this show what is possible when residents pave (or unpave!) the way for city-level policies that enable more efficient and people-friendly planning.

For those who already have a tactical urbanism idea in mind, the book makes effective use of basic diagrams to explain the practice: one in particular that budding tactical urbanists might want to consult is the Tactical Spectrum, showing the range of projects from unsanctioned to sanctioned.  In this context, unsanctioned refers to projects that citizens can go ahead and do without any government support; sanctioned describes projects that require support and approval from government, usually city departments, by nature of their scale or complexity.

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The Tactical Spectrum: Where does your project fit?

While budgeting, permit application, and other logistical matters aren’t the most exciting parts of planning your tactical urban intervention, it is helpful to think about how much government support you will need so you don’t find yourself facing unforeseen obstacles.

Overall, though, the authors stress that no matter the nature, scale, and degree of government implication in the project, the most important consideration is how it will affect the community. This is something that I find often goes missing in conversation about urban revitalization: who is doing the revitalizing, for whom, and to what ends?  In the second-to-last chapter, “A Tactical Urbanism How-To”, the authors present a series of questions that one needs to ponder before getting a project underway, from sourcing materials, to leveraging community support, to maintenance. I liked the emphasis on thinking through what the effects might be on the surrounding communities: it is easy to forget that what you think is a swell idea might not actually be what a particular group of people needs or wants.

This concern for ensuring that tactical urbanists do not end up adversely affecting the communities they are trying to improve gets to the crux of whether planning should come from the grassroots or “grasstops”. While tactical urbanism can bring alternative methods and accelerated timelines to municipal decision-makers’ attention, ultimately their goals are not so different than those espoused by planning policy: what city’s Official Plan doesn’t use words such as sustainable, vibrant, and resilient? One aspect of tactical urbanism that merits more exploring is what happens when the landscape of projects starts to become saturated. As with anything, the more people involved, the greater the need becomes for checks and balances. Does this kind of “lighter, quicker, cheaper” intervention only work when few people are doing it? How can multiple groups with competing visions negotiate the space of tactical urbanism without undermining each other’s’ efforts—and the visions, guidelines, and plans laid out by city government?

While these big questions aren’t answered in this book, the authors do suggest, through examples of informal partnerships between citizen groups and city government, the possibility of a new planning practice. This practice derives rigour from harnessing residents’ skills, energy, and imaginative foresight to balance comprehensive, long-term planning with the kind of quick-win, prototyping work that can get folks excited about improving the places they live. To refer back to Portland, the City’s Office of Neighbourhood Involvement coordinates a 95 neighbourhood-strong network of district coalitions and offices which provide support and technical assistance to volunteer-based neighborhood associations, community groups and individual citizen-activists. It may be in this type of supportive partnership that the strengths of both tactical urbanism and bureaucrat-led planning can be leveraged to build communities that are both functional and personable.

Until that happens, though, people will continue to find ways to mobilize and to shape the places they care about. It may sound cheesy, but seeing photos showing regular people doing work in their communities, wearing normal clothes, and using simple methods, reinforces the authors’ emphasis that truly, anyone can do tactical urbanism. It’s hard not to be inspired by the go-getters described in this book: from Baltimore resident Lou Catelli, who painted a crosswalk at a dangerous intersection when city staff failed to do the job, to Matt Tomasulo who created simple wayfinding signs to encourage people to actively rediscover their city.

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Getting it done: Lou Catelli painting a crosswalk in Baltimore; Matt Tomasulo’s wayfinding signs in Raleigh.

In particular, understanding how to exploit loopholes in the web of planning regulations is a great skill to have in one’s pocket: from feeding the meter to roll out a temporary park in a parking space, to using a catch-all special events permit for “build a better block” programming, there are a surprising number of instances in which seemingly hard-and-fast rules can be reinterpreted, at least in the short term. Another takeaway message that seems obvious but may be underappreciated is the value of developing allies in city staff by getting them on board early in the process by documenting successes, including community buy-in. If staff perceive value in what you’re doing, they’re that much more likely to put pressure in their departments to make the big policy changes that can facilitate and even mandate what you’re championing.

Throughout the book, the authors encourage the reader to reconsider in-between spaces that often do not fit into traditional land-use planning. One shining example is an Orlando community group’s efforts to activate a strip mall parking lot by setting up a temporary night market: the Audubon Park Community Market. The market was so successful—thanks to buy-in from residents and nearby business owners—that the organizers have now opened a brick-and-mortar market two blocks away. This probably would not have been possible had they not demonstrated the demand for and benefits of a temporary community market. If a group of engaged residents can transform one of the least people-friendly places—the surface parking lot—into two thriving markets, I’d say we have a lot to be excited about for the future of city-building.

While it is the individual stories of citizen-led action that bring the book to life, the authors also provide context to these stories by tracing the evolution of five broad categories of tactical urbanism: Intersection Repair, Guerilla Wayfinding, Build a Better Block, Parkmaking, and Pavements to Plazas. These in-depth explorations trace the origins of each approach while sharing resources that readers can draw from along the way. For example, understanding the genesis of now-iconic programs such as New York City’s Pavements to Plazas (see: Times Square, Park Ave, and many more) highlights how far the idea of people-centric planning has come in a short time period—and what we can look forward to as these ideas become championed by municipal leaders such as the formidable Janette Sadik-Khan (check out her TEDTalk: NYC’s Streets Are No So Mean Anymore). One aspect of the book that folks with great ideas but limited resources will appreciate is that often the best interventions are simple, and start on a small scale. Daniel Burnham famously proclaimed “Make no little plans; they have no magic to stir men’s blood…”; rather, Lydon and Garcia posit that it is by testing new approaches in small ways that we create the kind of bigger shifts we’re yearning for in cities.

In addition to contextualizing tactical urbanism as a whole, the book brings in a bit of history: while the term is new to the city-building lexicon, the concept dates back more than a century, when city dwellers faced many of the same concerns that pervade discussions about cities today. For example, I didn’t know that Open Streets (championed in Canada by organizations like 8-80 Cities) can be traced back to Safe Streets for Play movements in New York in the early 1900s. It is inspiring to witness the progression of this simple idea—turning streets from car-centric transportation corridors to paved parks for all—that is now being embraced by diverse communities (see: Bogota’s Ciclovía, LA’s CicLAvia, Austin’s Viva Streets, Ottawa’s Sunday Bikedays, and many more). It’s a prime example of tactical urbanism because it starts with a simple action: replacing spaces for cars with spaces for people—and over time has become embraced by municipal planners (although perhaps not yet traffic engineers). Other fun historical tidbits: the bouquinistes along Paris’ Seine as early examples of unsanctioned commerce; Sears’ pre-fab, mail order houses as a basis for today’s shipping container architecture; bookmobiles as informing mobile services before city infrastructure is  put in place

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An early Bookmobile in New York City.

I would recommend this book to both world-weary city planners seeking to be re-inspired to improve public spaces and the next generation of municipal “intrapreneurs” who are driven to catalyze big changes—as well as folks working on the ground in their communities seeking guidance on strategic and logistical matters. While many of the examples may be familiar to anyone interested in urbanism, I certainly found a few new ideas that sparked further research. Plus, the “how-to” parts of the book ensure that you’re not trying to reinvent the wheel: the wonderful thing about tactical urbanism is that it’s open-source by nature, so learning from others’ successes and drawbacks is part of the process.

If you don’t have time to read the whole book, I would recommend spending an hour with the last two chapters. I guarantee you’ll come out with a practical idea or two on improving your own neighbourhood through tactical urbanism—while avoiding getting caught behind a wall of red tape.

Sarah Bradley
Montreal

On The Nature of Cities

PostscriptAre you keen to get you own tactical urbanism project a try? 100in1 Day is a good way to get started. It’s a global festival of civic engagement, designed to embrace our power as urban citizens by spending one day of the year testing out small urban interventions to ultimately improve one’s city. These can range from activities, to education, to installations that temporarily change the built environment. In 2015, 100in1 Day happened on June 6 in four Canadian cities. Check out the 100+ urban interventions that happened in Halifax (Nova Scotia), Hamilton (Ontario), Toronto (Ontario), and Vancouver (British Columbia).

Cities for People also hosted a webinar on 100in1 Day and Active Citizenship featuring Juan Carlos Londono and Cédric Jamet, two Montrealers who launched the 100in1Day movement in Canada. You can watch it here.

It’s all in the Details: Two Missouri Schools Team up to Design Tornado Resistant Home

Art, Science, Action: Green Cities Re-imagined

Designing for resilience is a complex undertaking. As David Maddox states in The Nature of Cities Global Roundtable, “to design for resilience suggests we can identify it, plan for it” and that “It’s a steep challenge, community by community”.

Identifying, planning, and designing for location-specific resilience is just what a Midwestern team of students and faculty are attempting to do. Drury University and Crowder College have partnered together and been accepted to compete in the U. S. Department of Energy’s Solar Decathlon. While the focus of this 20-team national competition is on solar energy, the Crowder-Drury team has chosen to add an additional layer of complexity to their competition house: disaster resilience.

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Destruction in the wake of an EF5 tornado that struck Joplin, MO in 2011.

Drury University and Crowder College are located in the heart of tornado alley in Southwest Missouri and in proximity to Joplin, where in 2011 an EF5 tornado destroyed nearly 8,000 buildings and took 161 lives. As buildings gave way under wind speeds in excess of 200 mph, fragments of the structures became missiles directed at neighbors as the ¾ mile wide, multiple vortex storm moved along its 16 mile path. What was left were three million cubic yards of debris that took months to clear and to send to landfills.

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Debris from the tornado in Joplin took months to remove.

Storms of this nature have a destructive impact on individual lives, the emotional and economic well-being of a community, and the built environment. Additionally, a long-term environmental impact results from the millions of cubic yards of hazardous debris that is sent to landfills during the cleanup process.

The Crowder-Drury Solar Decathlon team believes that much of the structural devastation and loss of life in Joplin, as well as in many other tornado-hit cities, could be avoided if we designed buildings to resist the wind loads and impact of flying debris of such storms. Working out the design details of a solar powered, tornado-resistant home has been a rigorous academic and real-world challenge for the students on the team. To make the task even more challenging, for the competition, the home must be built at the home university; shipped to Irvine, CA; and reassembled to be ready for the October 8, 2015 start of the competition. Working out this logistical challenge and coupling it with our disaster resistance goal led students to discover two additional potential uses for the competition house: a disaster response command center and disaster relief housing.

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The Crowder-Drury Solar Decathlon team works on design details of a tornado resistant home.

The concept for the competition house now includes all three potential uses and is called ShelteR³: a Solar Powered Home for Disaster Response, Recovery and Resistance. Team website: http://shelter.drury.edu/

The ShelteR³ concept: Respond, Recover, Resist

Disaster Response

Two pre-fabricated modules (living and kitchen/bath) are whisked via flatbed truck into a community that has been devastated by a natural disaster. The units are craned off the truck and attached together to form a disaster response command center or emergency relief housing.  Roof-mounted flat solar panels generate electricity. The home or command center is self-sufficient and able to function before power and water are restored. Innovative impact resistant cladding and structural details protect from future storms and lend a sense of safety and security.

Disaster Recovery

Eventually, the community begins to rebuild from disaster and the need for residential housing takes priority over disaster response. Our structure can be easily adapted to fit these evolving needs. A foundation is laid and the two modules are separated by twenty feet. The resulting space is covered with window walls on both ends to create a spacious living area between the bedrooms and kitchen and bath. Cabinetry, customized to the owner’s needs, helps separate the living area from the bedrooms. Spacious decks extend the living space into the outdoors. Additional solar arrays are added on the roof for increased energy production. Using the ShelteR³ as the core of permanent housing could eliminate the need for temporary shelters typically delivered and used as disaster relief housing.

Disaster Resistance

The house need not be limited to post-disaster scenarios. In disaster-prone zones, the house offers a smart way to prepare for the possibility of storm winds and can be prefabricated or built on site. Structural sizing, spacing and connections as well as tension rods resist wind loads while redundant layers of impact resistant materials are the key to managing debris missiles.  A 90-second video on the team website explains the concept further.

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comp model interior living

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Various computer model-generated views of the Crowder-Drury Solar Decathlon team’s tornado-resistant home design, ShelteR³. In order from top to bottom: the front deck, the interior living area, the kitchen, and the exterior of the house at night.

When designing to resist tornadic events there are several programmatic issues to consider and problems to resolve.

Programmatic issues:

  1. Preservation of life
  2. Preservation of structure
  3. Little to no contribution to debris field

Problems to solve:

  1. Preservation of structure vs. sacrificial portions of structure
  2. Resisting Impact of flying debris during storm

Preservation of life, of paramount importance, is achieved through preservation of structure and resistance to impact. Little to no contribution to the debris field can be achieved through designs that eliminate sacrificial structural elements.

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Students building ShelteR³.

Many approaches to construction of a home arise after a storm. Some simply build using traditional construction methods and address future storms by placing a storm shelter in a room within the home, in the floor of the garage, or in the backyard of the home. In each of these applications, life may be preserved within one of these storm shelters if the family makes it to the shelter, but the rest of the home becomes sacrificial and is transformed by the storm into projectiles directed at the neighbors and beyond. Eventually, these sacrificial projectiles and debris field must make their way to a landfill. In Joplin, this added up to over 3 million cubic yards and months of effort and energy.

The Crowder-Drury team believes that redundant layers within the wall system can be key to withstanding a storm. Impact resistant Lexan over water repellent Zip Wall brand sheathing are finished by a Swiss Pearl fiber cement rain screen cladding, all of which create the protective enclosure. An enveloping fence of Kawneer’s Reynobond impact resistant and air scrubbing panels are the first line of defense, while hurricane-rated windows and doors protect areas of natural light and passage throughout the house.

The structural system consists of traditional 2×6 wood stud framing wall placed in compression by steel tensile rods through a steel chassis. Students worked with structural engineer Q. Scott Ragan, who specializes in disaster forensics to design this resistant home. We chose wood framing because it is a typical material used for construction in the Midwest and we wanted the challenge of resolving tornado resistance with a commonly used building material.

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Students building ShelteR³.

Thermal Mechanics Inc. provided the team with a high efficiency, affordable Daikin brand mini-split heating, cooling, and ventilation (HVAC) system for the home. This is a ductless system which means less material and labor for installation and less maintenance over the life of the home. The mini-split system requires a smaller heat pump than conventional systems, reducing the energy load on the solar panels.

At every turn the students have chosen readily available, affordable, and sustainable materials for ShelteR³ such as Patcraft carpet and resilient flooring. Their goal is to educate the public on choosing and living a sustainable lifestyle that considers energy, building materials, and resilience to our ever-increasing frequency of natural disasters.

Details continue to be refined as the team constructs the home this summer. Follow and engage with us on social media, or literally behind our Transland truck convoy as we head to the Solar Decathlon competition October 8th – 18th, 2015 at the Orange County Great Park in Irvine, California. Our student decathletes are excited to hear from you.

Facebook: https://www.facebook.com/drurycrowder2015

Twitter: @CrowderDrurySol

Instagram: https://instagram.com/crowderdrurysolar/

Youtube: https://www.youtube.com/channel/UC8dATiEWPrKVN8cJ_EgAZvA

Pinterest: https://www.pinterest.com/crowderdrury/

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Students building ShelteR³.

We can build better, preserve life, and protect our planet—we just have to work out the details. Our team, some witnesses to the Joplin tornado, have learned through the opportunity of Solar Decathlon and a thoughtful design process that designing for resilience is location specific but several principles can be applied across the globe.

1. Respond to location and the unique challenges it brings.

2. Rethink shelter. Approach the entire building as shelter and let no parts become sacrificial.

3. Better structural details. Use specific structural details in homes and buildings to resist the high winds and impact of tornados or hurricanes, or specific threat from other natural occurrences. Include mechanical fasteners at vulnerable connection locations specific to the potential threat at a level strong enough to resist the threat, not at minimum build code requirements.

4. Think about the many layers of threat of a disaster and protect against all aspects of a natural disaster, not just the primary focus. In the case of a tornado, for example it is not just the high winds that destroy, but the missiles created by the debris field as buildings fail and break apart.

Traci Sooter
Springfield

On The Nature of Cities

The U.S. Department of Energy Solar Decathlon challenges collegiate teams to design, build, and operate solar-powered houses that are cost-effective, energy-efficient, and attractive. The winner of the competition is the team that best blends affordability, consumer appeal, and design excellence with optimal energy production and maximum efficiency.

References & Further Reading

David Maddox, The Nature of Cities: http://www.thenatureofcities.com/2015/05/19/taking-resilience-out-of-the-realm-of-metaphor-how-do-you-measure-resilience-in-cities-how-would-you-know-if-your-city-or-your-community-was-resilient/

Fact Sheet – City of Joplin – May 22, 2011 EF5 Tornado; Lynn Iliff Onstot, Public Information Office; July 1, 2013

Crowder-Drury team concept; U.S. Department of Energy Solar Decathlon 2015; co-authored by student decathletes and faculty mentors, Drury University, 2015

U.S. Department of Energy Solar Decathlon 2015, http://www.solardecathlon.gov/; NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC.

Resource for assessing your home or small business for risk: https://www.fema.gov/media-library/assets/documents/2009

Resource for the design and construction of a safe room: https://www.fema.gov/media-library/assets/documents/3140

The Rent is too Damned High: The Nature of Cities and the Original Gentrification

Art, Science, Action: Green Cities Re-imagined

The rent is too damned high.” You hear it on the subway, you hear it on the news, and you hear it exclaimed even by mild-mannered conservationists while perambulating in the park. The rising cost of urban housing is on everyone’s mind, from Mayor Bill de Blasio to the chattering masses of the blogosphere. For most of my life, I figured nature had nothing to do with the price of my apartment. But now I’m not so sure. Let me explain by taking on the boogeyman of the moment: gentrification.

Gentrification is the process by which the wealthy, and the values of wealthy people, displace the persons and the values of others who are economically less well-off. On the one hand, one can see gentrification as a measure of a city’s success. Rising rents indicate the attractiveness of the city and, in particular, of certain neighborhoods, as places for people to live and work. Simply stated, more people want to live in the city than there is housing available, so rents rise. (This is exactly why the Mayor is so keen on building more affordable housing.) More expensive rents bring greater returns for property owners, raise the price of real estate, generate construction and secondary economic effects, and thus expand the municipal tax base. Compared with just a few decades ago, it is astonishing how New York has changed: safer, cleaner, more populous and more prosperous. Mayors of many cities in America and around the world would kill to have such problems.

On the other hand, what gets lost as rents rise is diversity and the vitality of urban spaces that follows directly from diverse, “authentic” experiences. Sharon Zukin, a renowned sociologist at Brooklyn College, opens her book on gentrification by saying: “In the early twenty-first century, New York City lost its soul.” What Zukin laments is the loss of gritty, heterogeneous, vibrant, ethnic, working class villages of small shops and businesses that used to comprise New York City, a city of villages. As Zukin writes, these were the kinds of neighborhoods celebrated by Jane Jacobs and are now the explicit goal of most urban planning practices. Yet, despite the best of intentions, in areas with access to the subway, these “authentic” places are being replaced by high-end versions of the Mall of America. The wealthy displace the less wealthy and bring with them what might be called homogenization by capital. Mom and pop stores just can’t compete with multi-nationals (read: Starbucks) when rents double every 18 months. The coffee might be stronger, the food might be fancier, the clothing might be finer, but only the better off might afford it for long. And truth be told, the wealthy are a bit boring.

Displacement is the nub of the issue. This group of people comes in and that group of people goes out. One can’t help but note that this has been happening in New York City for a very long time. Quoting Zukin quoting Burrows and Wallace quoting periodicals of the middle nineteenth century: “Manhattan is a ‘modern city of ruins,’ the New-York Mirror wrote in 1853. ‘No sooner is a fine building put up than it is torn down.’ Harper’s Monthly declared ‘A man born in New York forty years ago finds nothing, absolutely nothing, of the New York he knew.’”

Of course all of this is ripe with analogies to nature. Gentrification is not unlike the invasive weed that takes over the empty lot, squeezing out less competitive flowers of various kinds. Sure, one could argue that the biomass is higher and that some ecosystem services, like carbon sequestration or water retention, are better served by the dense, monotypic cover, but anyone who knows anything about biodiversity can’t help but feel the loss. More is not always better, and everyone—down to the smallest and most fragile—deserves some place to live.

Another analogy: gentrification has, indeed, been proceeding from the very beginning. If early twenty-first century New Yorkers mourn the loss of the gritty streets of New York in the 1970s, if mid-nineteenth century New Yorkers lamented the loss of farmland and springs, then they are only echoing the much more profound loss of nature initiated when the city began. Earlier generations of Native Americans knew forests and wetlands and a diversity of creatures completely unlike the city of steel and asphalt we know today.

In fact, my dear “The Nature of Cities” readers, what was the original displacement? Who has the greatest claim to vitality and authenticity in New York City? Well, it ain’t you and it ain’t me. It is the plants and animals (including some people) that lived here before the idea of New York City ever emerged. It is to these creatures, and their sense of the city, that  “The Nature of Cities” blog is committed. We seek the true authentic experience of place—the experience of nature.

ManahattaTransformationEricSanderson
Manhattan island, from 1609 to 2009. Credit: Mannahatta and Eric Sanderson.

As you may know, the place that became New York City—what I call Welikia, which meant “my good home” to the Lenape inhabitants of 400 years ago—had an extraordinary nature. Our latest count puts it at over 100 distinct ecological communities that once inhabited the landscape that became New York, filled with at least 1,000 distinct species of plants and animals. Differences in class and ethnicity among the human species represent one kind of vibrant heterogeneity, but the heterogeneity across species—biodiversity—represents a much more profound level of difference. Consider for a moment the life histories of a red oak, a broad-winged hawk, and a humpback whale, all of which made Welikia home. Those are the authentic experiences of New York City.

Why were these vital, authentic, heterogeneous populations almost entirely displaced? Where were the policies that should have maintained their lives in the city? Such policies did not exist because plants and animals (including the Lenape that inhabited Welikia) had no political power and were economically undercapitalized. Not a single tree, bird, whale or American person at the time New Amsterdam was founded had a single penny to his or her name.

Zukin is absolutely correct to say that gentrification is not a “natural” process, especially if we take “natural” to mean outside the human arena of social relationships. Gentrification, as we know it in New York City today, is almost entirely the product of the rules we have set up to govern the relationships among our fellow citizens. (“Almost” because the amount of land, one must remember, is determined by geological forces that long preceded us. Yes, we might make some landfill, but our contributions are still modest compared to the glaciers.) Today, those rules are driven by the exigencies of who has the most money, in the context of the laws of the city, state, and country. Therefore if we seek remedies for gentrification or for the destruction of nature, we must seek to change the rules.

I don’t know what to do about gentrification, but wrestling with gentrification has clarified in my mind what we need to do for nature in the city. There are four main approaches. One is the usual one we take in this forum: exhort our cities and each other to do better. We describe how lovely nature in the city can be, we provide interesting case studies or poorly known facts about urban nature, and we link arms in a shared, global endeavor. It’s nice, even wonderful in the best of cases, but sad to say, less effectual than many of us might like. Over the long run beautiful words and ideas make a difference. In the meantime, they hardly pay the rent.

The second approach is public demonstration and protest. Here fights over specific uses on specific pieces of land (for example, community gardens, beach fronts, parklands) can bring attention, motivate larger groups, and actually change the minds of politicians, especially if the clamor grows loud enough and the press gets involved. Sometimes nature even pitches in, with unpredictable and dramatic acts, such as Hurricane Sandy in New York City in 2012. Retrospectively, and with all due respect to the losses of life and property that followed the hurricane, Sandy is probably the best thing to happen for nature in New York City in a long time: it reminded us all that nature actually does exist, despite the tall buildings.

What Nature Provides (Eric Sanderson)The third approach is the regulatory one: actually changing the rules to change the behavior. This approach is more dependent on local situations, with each government (and level of government) in each locality having its own ways of doing things. In the United States, we saw a wave of important environmental regulation in the early 1970s that made large, important changes for the New York City environment (e.g. Clean Water Act, Clean Air Act, National Environmental Policy Act, etc.). Forty-five years later, those laws still govern our environment, with their focus on human health and safety, but one could imagine a new set of rules that addressed the species long since displaced. I harbor not so secret desires to have all of the Welikia community back, minus perhaps the dangerous ones and the climate refugees, to whom the city might make commitments to save elsewhere

The fourth approach is the most potent one and the one least tried: to directly tie nature to the economic system by valuing it. In other words, we need to agree to give nature value in a monetary sense. The problem from the very beginning was that Europeans ignored the value of nature. They conceived of the bountiful land and its many services as a free gift, to be used and abused at will. In other words, they never thought to pay rent to the first landlord: nature.

Ecological use fees (Eric Sanderson)A better way to tax (Eric Sanderson)What does it mean “to pay rent to nature”? In a literal sense it is not possible, because nature doesn’t care for your money; nature’s lack of greed is its downfall. Rather than pay nature directly, we need the public to act as the guarantor of nature, both for our sake and for the nature of cities. The rationale lies in rights and responsibilities. Any development project represents an appropriation of ecological value from nature and the body politic as part of nature. The apartment building that creates more stormwater runoff and displaces the trees that would have cooled the city has taken something from me and you and everyone else. For the birds and the bees, it has taken everything. In compensation, the private owner has a responsibility to repay the public for its loss.

The most direct way to value nature is through taxes. Right now, property taxes are based on the economic value of the land, which is one reason why some city leaders applaud the process of gentrification. Higher real estate prices translate directly into more money in the city’s coffers. Valuing land in terms of its ecological value, instead, would decouple some of the economic incentives that lead to bleeding high rents while simultaneously returning value to nature. For New York, we could use information about the historical ecology of the city (via the Welikia Project) to set a price on the development of oak-hickory forest, or salt marsh, or the shallow estuary waters, for every parcel in the city. If the tax per area increased as a function of development for each type of natural community, incentives would be built in to develop and respect nature simultaneously.

The result would not only be better nature, but better cities, and, in short order, a better world, with less reliance on the free gifts of nature and more on the diverse talents and skills of human beings. If you want a preview, try chapter 9 in Terra Nova, or read this, or try this.

Eric Sanderson
New York City

On  The Nature of Cities

Trees of Life and Fruitful Relationships

Art, Science, Action: Green Cities Re-imagined

A review of Arboreal Architecture: A Visual History of Trees, an exhibition on view at the Cantor Arts Center, Stanford University, now through July 20, 2015.

The Cantor Arts Center at Stanford is a beacon for global arts and culture in Silicon Valley—it opened its doors in 1894, nearly a century before Silicon Valley was a thing. On this most recent visit, I was pleased to see that the Cantor was also making some effort to be a beacon for our relationship with nature.

Trees by Henri Edmond Cross, 1909, Graphite and watercolor on paper
Trees by Henri Edmond Cross, 1909, Graphite and watercolor on paper.

The Arboreal Architecture exhibition takes place in a space that is only slightly larger than the museum’s coatroom, yet the show truly speaks volumes beyond its size. Inside the Lynn Krywick Gibbons Gallery space, you feel as though you’ve just stumbled into a hidden treasure trove.

The show’s curator, George Philip LeBourdais, has shoehorned a global collection of artworks from the Cantor Center’s collection into the room. Spanning about 1,500 years, the collection is impressive not only for the time it covers, but because all of the works concern the trees and our ever changing cultural relationships with them.

Textile fragment with an oval medallion containing a Tree of Life, 6th century Egypt, Wool and linen
Textile fragment with an oval medallion containing a Tree of Life, 6th century Egypt, wool and linen.

There have been societies in every corner of the globe at just about every time in history who had some form of a “tree of life” motif integrated into their culture. For ancient Egyptians, however, not only was the tree a symbol of life, death, and regeneration, it was a symbol of the very beginning of everything, of the universe and life itself.

Such deep connection to the tree is reflected in one of the oldest works in this exhibition, a 6th century “Tree of Life” woven in Egypt from wool and linen fabrics. It is a testament to the quality of ancient Egyptian craft that such a piece even exists today, yet the cultural story it tells is even more impressive and still broadly relevant. Seeing the tree as a source of life is a well-appreciated message with which to begin this exhibition, and one which is explored well throughout, both in physical and spiritual realms.

Moving forward in time, two works both dating from the 16th century hang across the room from each other, offering a powerful historical comparison of trees in Eastern and Western cultures.

Landscape by Shen Zhou, c.1500, Ink and color on paper
Landscape by Shen Zhou, c.1500, ink and color on paper.

From China, a delicate landscape painting by Shen Zhou depicts a riparian scene of a man sitting calmly under a tree. There is an appreciation in the work of the tree as a partner. Visually, the tree pushes out the side of a hill and then gently bends upwards to stand watch over the waters as if man and tree are taking in the same view together. Though not explicitly, the work reminds us of the tree’s deep historical ties to ideas of wisdom and enlightenment in many Eastern cultures.

Rural Woodworking by Johan Gruninger, 16th century, Woodcut
Rural Woodworking by Johan Gruninger, 16th century, woodcut.

Across from this work is a view of the tree from the same period, yet through the lens of what was a vastly different culture. The detailed woodcut print by German artist Johan Gruninger depicts a scene of grumpy-faced rural wood workers and is thoroughly utilitarian both in process and subject. The print is reflective of a culture in the midst of the Renaissance, a time in which radically new ways of thinking of self in relation to nature were being brought forward and, along with them, radically new ways of making and doing. Though the industrial revolution was still a few centuries off at this point, you could say that this is the time where the seeds of the current way of life in the Western world were planted.

Whether it was intended or not, the placement of Gruninger’s piece across from the Zhou painting offers a profound juxtaposition, not only of Eastern and Western artwork, but of differing relationships to nature during the 16th century in these two places.

Standing back to admire the collection as a whole, I was curious about LeBourdais’ attempt to arrange the works in this show by way of ‘branches’ and a ‘tree map’. He splits the show into three distinct sections and visually connects the works with wall graphics, noting this as a depiction of the “tree-like structures of knowledge that help us make sense of the world”.

Of course, we are in the middle of Silicon Valley, where spreadsheets and data driven visuals are a language of their own. Yet in so many ways, the trees in these artworks and their simple arrangements speak so much to the viewer — and, indeed, to each other — that they might do just fine without the help of neatly organized categories and connections. This is a small misgiving, of course.

The Fallen Tree, Fontainebleau by Eugene Blery, 1831, Graphite on paper
The Fallen Tree, Fontainebleau by Eugene Blery, 1831, graphite on paper.

The Arboreal Architecture exhibition offers a deep and powerful display of cultural relationships to trees over such a great cultural timespan that it’s impossible not to be affected by it. The works speak of trees in city and countryside, of trees in in ritual and for utility, and, perhaps most importantly, of trees as part of us and, ultimately, as works of art themselves.

Several days after seeing the show, while sitting under a California Oak, I caught myself laughing that this was certainly a tree and moment worthy of a painting. I realize now in closing this review that the Arboreal exhibition is important not only for its depth and scope in looking at historical cultural ties to the tree, but also for the opportunity it gives each of us to discover something new between ourselves and the humble tree. The works reverberate with the energy of man and nature, and if the enduring relevance of these artworks is any indication, this process of discovery can be an amazingly fruitful and never ending one for humanity.

A treasure trove, indeed.

Patrick Lydon
San Jose & Seoul

On The Nature of Cities

Further Reading:

Stanford art history scholar explores nature and culture in frost and forests
http://news.stanford.edu/news/2015/april/trees-cantor-exhibit-041415.html

Cantor Arts Center
http://museum.stanford.edu/ 

George Philip LeBourdais
https://art.stanford.edu/people/george-philip-lebourdais 

Landscape, Cities, and the Pope: a Shift for a Better Future?

Art, Science, Action: Green Cities Re-imagined

I believe that urban landscape matters! The landscape in which one grows up, matures, and lives life may be the essential factor in determining the behavior towards and empathy with nature and with other people and their cultures. The landscape can even be the way we connect to ourselves.

The shape of our cities is a result of the historical changes in land cover, built structures, and the continuous man-made interferences that are made in the landscape and its relationship with natural factors such as geomorphology, climate, biodiversity, ecosystem remnants, green areas, and urban forests. Social aspects are not less important. Cities that segregate social life in closed communities (being gated high-end or middle class enclosures, or favelas), malls and cars, may induce prejudice and injustice. Live streets and urban amenities are the public realm where the different meet, learn with each other, and may have daily contact with nature and natural processes.

Landscapes and the spiritual bond with Nature

When I walked along the Philosopher’s Path in Kyoto, I felt the spiritual power of Nature in the urban landscape. The path meanders along a channelized river, with clean waters in the city border. The landscape is peaceful, with the city in one side and the forest in the other, the water flows in between.

Shinto shrine. Photo: Cecilia Herrzog
Shinto shrine. Photo: Cecilia Herrzog

There are several Temples and Shrines along the path. The Shinto Shrines profoundly touched me. I was ignorant of their sacred meanings, but I have never felt this deep connection with Nature in a spiritual way before. Being a non-religious Jew myself, I perceived the temples and churches I have entered in my life as built structures; I have never had the feelings I had in the shrines! Actually, much earlier in my life I remember when I was in Assisi (Italy), I felt something very special. I was touched by St. Francis of Assisi’s history of loving of nature and its creatures. At the top of the hill was the place where he had lived, and I could feel the energy of nature flowing around. Maybe this was the source of his inspiration and connection with holy love to nature and living organisms.

After these experiences, I started reflecting about our divine bond with nature, and how the landscape influences our lives and values.

Until I read the E.O. Wilson’s book The Creation, I had never really had any thoughts about how religion could play an important role in ecological education and awareness raising. In his book, scientist Wilson dialogues with religion, and looks for the common ground to protect and restore Nature.

And what a grateful surprise was the Encyclical Letter of Pope Francis! The LAUDATO SI’ calls on all of humanity “to care for our common home”. Firmly grounded in science, the Pope talks about consumption, greed and accumulation; the oil addicted society that eradicates ecosystems and depletes natural resources. He also says that we cannot trust only in technical solutions to solve our environmental and social problems. He declares the urgent need to restore, conserve, and protect our environment. He urges all of us to mitigate the colossal damage that our civilization has made, and to avoid climate change and the huge uncertainties that are threatening the future of humanity. The response to his message has been massive, and I believe that 2015 is crucial to prioritize life and also to shift the way we see, plan, and design our landscapes at all scales.

Cities in challenging times

How can globalized, modernist urban landscapes reconnect urban dwellers with Mother Earth?

We are living in challenging times in which cities play a crucial role, as so many authors of The Nature of Cities have pointed out from different perspectives. In this international blog, contributors have presented and discussed examples that are popping up around the world—of social-ecological oriented research, planning, and design, wherein biodiversity is treated as fundamental. Many of those case studies come from local residents who want more livable places to raise kids in healthy and diverse environments.

However, many cities have remained in the old modernist sprawl paradigm—based on high consumption economies, gated communities with homogenized gardens, and automotive transportation that requires costly infrastructure—known as business-as-usual. The surrounding ecosystems’ remnants and productive lands are eradicated in this process. Also, old urban areas have been transformed, destroying their history and culture. Gentrification in renovated regions is another negative factor, displacing residents and small businesses while ceding room for a globalized culture and international brand stores. This globalized trend widens the social gap even farther, especially in poorer countries, where it is already abyssal.

Our planet is urban not only because the Biosphere is giving way to built surfaces, but also because the political and economic decisions are largely taken by city dwellers.

I consider ecological illiteracy to be one of the main drivers of the disconnection and disregard of our Home: our planet, our region, our city, our neighborhood, our street or our own home. Or even with our own selves!

How can people connect with nature and its processes if they spend their life in air-conditioned (or heated) built boxes, apart from biodiversity and social diversity? How can they develop and act on their Biophilia in artificially built and “controlled” landscapes? [Biophilia is the “innate and genetically determined affinity of human beings with the natural world” (E.O. Wilson)] Much has been written, published, and discussed in conferences about those issues (see for instance Tim Beatley in this blog).

Urban landscapes and reconnection with Nature

For me, the Pope’s call to “care for our home” is more than a metaphor for the Planet’s degradation and the related risks to Humanity. It is time to care for our home at all scales, including the ecological restoration of our urban landscapes.

In Brazil, the number of urban dwellers that are engaging in growing organic food, fighting for ecosystem restoration and water conservation, and getting together to learn and exchange experiences has been growing exponentially. As everywhere, in this country, social media is helping people to communicate among themselves about their findings and experiences with Nature and natural processes in multiple ways. We have very positive results on the fields that actually enhance urban landscapes ecologically and socially: publications and courses on related themes are starting to pop up around the country; leaders are assuming important roles, participating in actions and policy elaboration; volunteers are expanding their work in a society without a tradition of social work.

There are lots of good examples that are more powerful every day, as I have already mentioned in my previous posts in this blog. Hortelões Urbanos (Urban Food Gardeners), an urban agriculture group in São Paulo, has been a source of knowledge and inspiration to similar projects in cities around the country, and now depends on more than 17,000 followers (in less than 4 years). Their interventions in parks and squares in São Paulo, the largest Metropolitan Region, are awesome: from green or gray deserts, they create biodiverse, productive landscapes with waters springing again.

Fig2-corujas-2015-06-20 11.19.21
A Hortelões Urbanos (Urban Food Gardeners garden in São Paulo. Photo: Cecilia Hezog

Rios e Ruas (Rivers and Streets) is another group that has been working in the last decades to ecologically educate residents. They have been tracing rivers and creeks that were wiped out from the landscape. The severe drought that is hitting Southeastern Brazil, with water shortages threatening the removal of large number of residents from urbanized areas, has helped to give visibility to their work

Fig3-a-2014-11-09 Oficina Festival Praça da Nascente 02A few years ago Juliana Gatti and Sandro Von Matter started the Instituto Árvores Vivas (Living Trees Institute). They have a remarkable engaging and educational role in São Paulo. They are actually changing the way Paulistas (São Paulo residents) see, feel, and act regarding trees and their urban lives.

The green economy is slowly starting to emerge in Brazilian cities, with new companies that develop green technologies to implement green roofs and walls, solar energy, water bioremediation and conservation, and bio-sanitation, at different scales. Hopefully, with the dramatic water shortage and the challenges of the changing paradigm towards a clean economy, they will rise and help Brazil get out of its severe economic crisis.

Another excellent and inspirational example is the Skygarden, a relatively new company specialized in green roofs and walls, that mimics São Paulo’s native ecosystems: Mata Atlântica (Atlantic Rainforest) and Cerrado (Brazilian Savanah). The founder/owner Ricardo Cardim, studied odontology, but soon fell in love with botany and native ecosystems and then went on to a Master’s in biology. In 2008, he started an NGO named Árvores de São Paulo (São Paulo Trees), and from then on has been helping to change hearts and minds regarding autochthonous urban trees, not only in streets and parks, but also in roofs and facades

Fig5-Trilha TransCarioca-modificada-english
The TransCarioca Trail, in Rio de Janeiro.

In Rio de Janeiro, the remarkable TransCarioca Trail project is underway with the support of hundreds of volunteers under the leadership of Pedro Menezes and Celso Junius. It is a more than 180 km-long walking track over the splendid massifs of the city, connecting several protected areas. It spans the world-renowned Sugar Loaf to the distant beaches of Guaratiba.

Another initiative that is also gaining more support is Green Corridors, part of the Carioca Mosaic project, in the lower areas on the water basin where most of the Olympic Games facilities are concentrated.

Fig-6-flood-prone-areas
The locations of the low lying areas, or water basin, in Rio.

Shift for a better future

I have written before in this blog about the challenges and opportunities that the city of Rio de Janeiro has had in the last few years, especially with the high investments focused on international events—the 2014 Soccer World Cup and 2016 Olympic Games being the most internationally recognized. Unfortunately, decisions about the future of our cities (not only Rio de Janeiro) are mainly focusing on companies that build gray infrastructure, engage in non-productive land speculation, and support the oil-based transportation industry. This means building cities-as-usual: sprawling and transforming the landscape and changing natural processes and flows with social segregation.

The current trend can be easily seen in the “Marvelous City” of Rio de Janeiro. There is a disconnection between the recommendations of scientific assessments to adapt the city to climate change and what is being actually implemented. The money is flowing to the West Zone, where the map shows high vulnerabilities of low lands to floods and sea level rise.

Gated community in Rio. Photo: Cecilia Herzog
Model of gated community in Rio. Photo: Cecilia Herzog
Golf-olimpic(Herzog)
Golf Olimpic in Rio.

We might expect that what is happening was planned based on the knowledge that was generated by state-of-the-art academic research, supported by the city since 2007. Not at all…Wetlands and protected areas have been eradicated with the excuse of the Olympic Games. The rich biodiversity and wet landscapes that offer irreplaceable ecosystem services have been transformed into more and more gated communities, commercial areas adorned with homogenized cosmetic gardens, and the expressways on which oil-dependent transportation oil-dependent relies. In this process, the city is losing not only its ecological heritage, but its cultural identity.

One of the most significant examples is the Olympic Golf course that was built over one of the last protected remnants of Restinga (sandy soil, sea border ecosystem). Besides the elimination of biodiversity and ecosystem services, the landscape conversion to lawn requires daily irrigation in times of uncertain climate. The real estate market is the beneficiary of this mega-gated development, as many others in the same water catchment.

A sewage canal in Rio. Photo: Cecilia Herzog
A sewage canal in Rio. Photo: Cecilia Herzog

The social segregation and lack of sanitation are still huge issues and the City has not complied with the commitments it assumed when the right to host the Olympic Games was won. The rivers, lagoons and even Guanabara Bay are heavily polluted with sewage, diffuse stormwater run-off, and garbage.

Civil society is fighting against what is happening in the city. Its voices are heard mainly on social media when the traditional media doesn’t open space for protests and meetings.

Landscape for today and the future

Landscape is becoming an important issue as people start to understand how they depend on biodiversity and the ecosystem services they need to live healthy and fulfilling lives. Unfortunately, in Brazil, the profession of landscape architect is neither recognized nor institutionalized. We are in the process of passing a law that will make possible to start new undergrad courses in the area of landscape architecture in Brazilian Universities. We need to implement interdisciplinary courses, establish research groups, and fund pilot projects that demonstrate how our landscapes work, their social-ecological functions, and their processes.

Pierre-André Martin and I are coordinating a new Master’s in Ecological Landscape Planning and Design at the Pontifical Catholic University of Rio de Janeiro in the Department of Architecture and Urbanism, to start next August. The course is interdisciplinary, with professors from landscape planning and design, urbanism, biology, geography, social sciences, law, anthropology, and engineering.

We urgently need cities that praise nature, that protect and restore native biodiversity in all possible ways. We must escape from the trap of fragmented knowledge and look for integrative research and teamwork on adaptive landscape-based urban planning and design. We must monitor results and learn what works or not in our landscapes. We must plant trees to have water and food. The cities have to be part of the Biosphere with green infrastructure that regenerates degraded gray and polluted areas. People have to be educated and reconnected to life to participate in the landscape planning and design process.

I hope that the momentum we are living is transformational. Powerful forces are moving to make effective change in the economic, social, and environmental paradigms: from a competitive society to a more cooperative world, where natural capital has more value than the virtual financial market. I believe that the call of Pope Francis can help, especially in Brazil. We are the most populous Catholic country in the world, with more than 120 millions followers of the religion.

I hope all people hear his call and give science and practitioners with ecological vision the opportunity to contribute to a shift to a better future.

Cecilia Herzog
Rio de Janeiro

On The Nature of Cities

Wild in Detroit: Realizing Opportunity in a New Nature

Art, Science, Action: Green Cities Re-imagined

Of all the cities in America, Detroit, Michigan may provide us with the best opportunity to discover how to create a connection to nature within an urban population.

The New Nature in Detroit. Photo: Rebecca Salminen Witt
The New Nature in Detroit. Photo: Rebecca Salminen Witt

Detroit is a place of glass and asphalt and steel juxtaposed block by block with wild prairies, emerging woodlands, and re-emergent wetlands. We are immersed in a kind of new nature here, but most Detroiters quite literally can’t see the forest for the trees. Detroit is a place of contradictions where the unexpected is a daily occurrence. Here, we see pelotons of cyclists 300 strong, first rolling along in the company of a stray dog or a lone pheasant on urban avenues that no longer host any homes, and then pedaling toward downtown streets crowded with cranes marking new building development.

These contrasts fascinate the world, but it is the wildlands which are emerging in between these extremes—places like the small second stage forest which has grown up on what was once an illegal dump site on King Street, pictured above, or the pockets of prairie that have claimed blocks of former home sites in the old Briggs Neighborhood, that are most interesting and which may actually have the most potential to improve the lives of Detroiters by providing them with the opportunity to cultivate a lasting connection to nature.

Detroit Wildland Urban Interface. Photo: Rebecca Salminen Witt
Detroit Wildland Urban Interface. Photo: Rebecca Salminen Witt

Wikipedia will tell you that the Wildland Urban Interface is that zone of “transition between unoccupied land and human development.” This zone (the WUI) is often studied for its relevance to outbreaks of wildfire, and particularly the escalating danger to human lives and property that wildfires represent as more and more homes are built within the wildland urban interface which exists on the outer edges of suburban development. Traditionally, we investigate human intrusion into the wildlands and discuss the disruption in natural systems (including suppression of wildfire) that this causes. In urban areas, the wildland urban interface receded long ago and, for the most part, urban residents no longer consider themselves to be part of the interface with nature.

But in Detroit wildland has suddenly and unmistakably appeared in spaces where neighborhoods recently stood. Here, wildlands exist within the city limits, not on the outer edges of development. After decades of disinvestment and abandonment in the urban core, there is, once again a “zone of transition between unoccupied land and human development.” In this context, we see an unpredictable—and often interesting—disruption in human activities caused by nature’s wild return. It is this disruption that has created space, both literally and figuratively, for Detroiters to discover a connection with nature.

Green Corps. Photo: Greening of Detroit
Green Corps. Photo: Greening of Detroit

I recently moderated a brainstorming session for high school students tasked with generating ideas for improving the environment of their neighborhoods. Their interests ranged from occupancy of vacant structures, to illegal dumping on vacant land, to urban gardening. They were palpably afraid of the wildlife (pheasants, raccoons, deer, coyotes) that they had begun to see patrolling their streets.

Much of the discussion centered on “blight elimination.” Their interests were motivated by how they feel when they are in their neighborhood, what they think they deserve, and how the current conditions impact the self image they carry with them into the world. In the eyes of the students, the wildland that is encroaching upon their neighborhoods is evidence that they have been ignored, forgotten, or blatantly disrespected. To them, uninvited nature in their neighborhood represents nothing more than urban decay requiring an intervention designed to eliminate it.

Our discussion was wide-ranging and very animated. By the end of the day, we had arrived at an unexpected conclusion: maybe this new nature was an opportunity to be considered more carefully. Perhaps, the wildland that had emerged at their doorsteps was something better managed than eliminated, and maybe this was a civic issue that they, as young people, could actually do something about. Most surprising was their conclusion that maybe this opportunity made them the lucky ones after all.

My discussion with the kids that day emphasized a simple truth that isn’t glamorous or romantic in the way many recent articles have portrayed Detroit and its residents. Detroiters are not necessarily willing stewards of the environment or intentional civic ecologists in this assertive nature that we find ourselves living amidst. We are merely human participants in the inevitable march of evolution, adapting as we must, surviving as we may. But we are surviving, and because Detroiters are resilient and hardworking, we are finding our place within this new wildland urban interface.

Unintentionally immersed in nature. Photo: Rebecca Salminen Witt
Unintentionally immersed in nature. Photo: Rebecca Salminen Witt

Detroiters did not seek to experience nature within their city. This may be why they have not fully recognized its benefits. A few years ago, The National Wildlife Federation published a handy fact sheet that lists many of the benefits of human exposure to nature. A quick review reveals that despite heightened access to nature, Detroiters still suffer from the ills that exposure to nature is supposed to alleviate: ADHD, hypertension, obesity, diabetes, autism, increased depression, stress and pain. Our kids are asthmatic and hyperactive. Our adults are depressed, obese, and suffer from heart disease. It’s no wonder that most Detroiters aren’t embracing the nature that has appeared in their urban space—they aren’t getting any of its benefits!

I have begun to think that in order to realize the benefits of exposure to nature, one must intentionally seek it out. Further, the Detroit experience suggests that proximity to emerging wildlands does not equate to a connection with nature. Immersion in natural space undoubtedly increases the opportunities for connection with nature, but alone, it is not enough. To create connection, we must be intentional and deliberate in crafting quality opportunities for interaction with nature.

So, given that Detroiters have more opportunity now than ever before to develop a meaningful connection to nature, what can we do to capitalize on our de facto immersion in wildspace to create that connection?

Camp Greening. Photo Credit: The Greening of Detroit
Camp Greening. Photo Credit: The Greening of Detroit

Start small

By giving the youngest and most vulnerable Detroiters the opportunity to experience nature in the wildland urban interface, we have begun to create tiny emissaries of true connection to nature.

Infusing environmental education and nutrition education into the Detroit Public Schools curriculum was an important step in creating an environment where immersion in emerging wildlands could be recognized as an opportunity to build a connection to nature. We began in a classroom, building excitement and expectations for the things that we might find outside. We worked with teachers and students alike to make them comfortable with the idea of moving intentionally into the wildspace in our city. And then we ventured out.

Our LAND. Photo: The Greening of Detroit
Our LAND. Photo: The Greening of Detroit

Our first adventures in the wildlands were a learning experience for all of us. Children in spotless basketball shoes labeled by LeBron picked their way gingerly through rubble and mud. So we bought boots. They showed up for our “field” trips unprepared for the weather. We brought hats and mittens. Teachers suggested that “troublemakers” stay behind. We made the troublemakers team leaders and let their exuberance light the way for their peers. Everyone was afraid of bugs, and spiders, and worms. We played I Spy and Wildlife Bingo and by the end of the day, we were searching pockets so that no pet worms made it back to the classroom.

We all adapted. The kids (especially those “troublemakers”) thrived. The littlest of us all were some of the first to realize that the new nature that surrounds us just might be a gift. I’m betting that they will also be the first to exhibit the benefits of a connection to nature.

Gardening in the WUI. Photo: Rebecca Salminen Witt
Gardening in the WUI. Photo: Rebecca Salminen Witt

The agriculture of opportunity

Another group of Detroiters that have become emissaries to the wildlands can be found within the urban agriculture community.

The urban garden is emerging in Detroit as one place where the barriers have started to come down for urbanites struggling to understand their place within the changing ecosystem of the City. Gardeners were some of the first residents to venture into the wildlands on the edges of their neighborhoods, carving gardens of all types from the emergent prairies and woodlands. We could consider urban gardeners the first to recognize the opportunity inherent in Detroit’s vast open spaces.

These early adapters are a different breed; for the most part we aren’t talking about happy hipsters growing green zebra tomatoes and red russian kale in tidy urban allotment plots, although we have those, too. The pioneers in the wildland urban interface are a rough crowd forced off the grid by life circumstances and an unstable local economy; they are growing a crazy profusion of food in abandoned lots to feed their families and sustain their neighborhoods. For these folks, forging a connection to nature is not the primary objective. In fact, many times it seems almost accidental. Nevertheless, through the work in the garden, the gardeners develop an authentic connection to nature and come to enjoy the benefits that it creates.

Green infrastructure planning. Photo: Greening of Detroit
Green infrastructure planning. Photo: Greening of Detroit

Participation

Another opportunity to bridge the gap between immersion and connection can be found in community-based planning and design.

Encouraging residents to engage in discussions and planning activities around the vacant spaces in our midst almost inevitably leads them to recognize the benefits that they are already deriving from open space, simultaneously providing them with the opportunity to participate in its long term preservation and/or use. Community-based planning has gained momentum in Detroit during the past several years, and we now have examples of neighborhoods that are not only firmly connected to the nature that surrounds them, but are also empowered to begin to shape that space to facilitate comfortable coexistence.

On Detroit’s lower east side, residents of several neighborhoods joined together to form LEAP, the Lower Eastside Action Plan. The LEAP target area borders one of Michigan’s most affluent suburbs as well as the Detroit River. It has a major automobile manufacturing facility within its borders, as well as several of Detroit’s major streets. Still, this area is notable for its residential abandonment and resulting acres of open space. The members of LEAP recognized the need to be proactive early on. They realized that community-based planning could give them a voice in what would happen in their neighborhoods. Today, they have an organized Greenway, an open space master plan in the implementation stage, and a voice in what will be done with the vast vacant spaces in their community.

Neighbors building Brightmoor. Photo Credit: Greening of Detroit
Neighbors building Brightmoor. Photo Credit: Greening of Detroit

In the opposite corner of the City, the Brightmoor neighborhood came to community-based planning from the other direction. There, community residents first came together to build a garden and to rid their street of prostitutes and drug dealers. Soon after, a community group formed and the neighborhood began to redefine itself with gardens at its core. Brightmoor is another neighborhood near an affluent suburb, with abundant open space and a location along the banks of a (different) river. The natural assets of the place are undeniable. This is a place where gardens work with the existing terrain to create a connection with nature that is almost immediate for everyone who visits.

Here, the plan came later. In fact, the plan was created as a tool to preserve and extend the community-based development that had already occurred in the neighborhood.

These examples are fascinating when compared. The neighborhoods have similar assets: abundant wildspace, riverfront, proximity to an affluent suburb. They also have similar challenges: residential abandonment, aged infrastructure, combined sewer overflow issues. And they arrived at a similar conclusion—that community-based planning was a valuable tool to help them manage the wildland urban interface that had come to exist in their neighborhoods. The control that community-based planning provided helped both of these neighborhoods turn immersion in wildland into connection to nature for their residents. In each neighborhood, the residents are beginning to experience the benefits of their exposure to nature. Not surprisingly, these benefits are more readily visible in the Brightmoor neighborhood. After all, those residents intentionally sought the benefits of nature through gardening.

Detroit has miles to go when it comes to capitalizing on the wildland that has emerged in its core, but we have begun to recognize that these places give us the chance to create a city that more fully supports its citizens. Our children and our gardeners have shown us that connection to nature can be wrought from immersion in wildland. Our community planners have demonstrated that planning can create a voice for residents, leading them to recognize the value in nature.

Detroit’s wildlands hold its richest opportunity to improve the lives of its citizens.  These are places were Detroiters can learn to embrace nature and in so doing, realize the lifelong benefits that such a connection provides. This unique opportunity must be cultivated carefully in recognition that connection to nature is not assured even given immersion in wildland. This is no time to stand idly by. Those of us who have been fortunate enough to enjoy a connection to nature must get off the sidelines and help orchestrate the preservation, use, and enjoyment of Detroit’s most surprising asset; the new nature at its core.

Rebecca Salminen Witt
Detroit

On The Nature of Cities

Sustainable Design is Useful, Beautiful, and Connected to People

Art, Science, Action: Green Cities Re-imagined

A review of Sustainable Infrastructure. The Guide to Green Engineering and Design, by S. Bry Sarté. 2010. ISBN 978-0-470-45361-2. John Wiley & Sons, Inc., Hoboken, NJ. 364 pages. Buy the book.

SarteCoverSustainable infrastructure design—from water, energy, material flows, built systems—is the art of seeking solutions that address ecology, engineering and culture as interconnected realms.

In the past, civil engineering was the transformer of the natural environment to meet development and human needs. In doing so, engineers blindly trusted technique as a pillar, repeated recipes, disregarding the importance of understanding each intervention site as a unique living system. Multiple evidence around the world shows that, in many cases, engineering has been responsible for more environmental problems than for solutions.

In this book S. Bry Sarté calls us to design structures for the future that will be effective in the next century, reconnecting strategies that worked in the past with new methods.

An engineer himself, S. Bry Sarté graduated from the University of California. He is founder of Sherwood Design Institute, a non-profit research and policy group. Through his collaborative projects around the world, and in lectures and conferences he has addressed the urgent need for a new paradigm and has this influenced urban planning and management in a very positive way.

Sustainable infrastructure. The guide to green engineering and design, belongs to a constellation of books such as Green Infrastructure: Linking Landscapes and Communities (M.A. Benedict and E.T. McMahon, 2006) and Green Infrastructure: A Landscape Approach (D.C. Rouse and I.F. Bunster-Ossa 2013) just to mention two. All these works are aimed at demonstrating the value of ongoing collaboration among architects, engineers, planners, ecologists and many other people.

This book is structured in three parts and nine chapters. The first part introduces the reader to the New Paradigm for Design, which is essential for this new era: the Anthropocene. In the present age, the social, economic and environmental issues surrounding infrastructure are too complex to be left to engineers alone, as it has been practiced in the past century. Today these multiple and multifaceted problems need to be solved in an interdisciplinary and collaborative fashion, if we want to make our habitat more livable. This part of the book there are two key chapters, describing the process and frameworks of sustainable design, explaining the new paradigm for an integrated approach to sustainable design at different levels.

The second part, comprising four chapters, describes water and energy management, as well as sustainable site planning and materials flow.

The third part of the book gives many examples across different action scales, which at the end are always intertwined: the urban (chapter 7), community (chapter 8) and site scale (chapter 9). Through case studies around the world, most through the experience gained by the Sherwood Design Engineers Institute, the author shows how sustainable design can provide system models for integrated win-win management programs.

This book is easy to read. It explains paradigms and strategies, providing a practical guide for planners, landscape architects, educators and students. It is an excellent inspiration to students and professionals, inviting them to integrate existing concepts in new ways.

The author succeeds in passing on an important message: design should deliver systems that are useful and also beautiful, so that people can connect with them, giving them value and understanding. He emphasizes the responsibility that citizens have in their everyday life choices to ensure the sustaining of life on Earth.

This book is an important reference, highly recommended.

Ana Faggi
Buenos Aires

To buy the book, click the images below and go to Amazon—part of the proceeds return to TNOC.

Open Wells and Urban Resilience

Art, Science, Action: Green Cities Re-imagined

What happens to a city’s traditional foundations of service delivery when it expands boundaries and enhances its infrastructure? Does the city still concern itself with the maintenance of the supply structures that were once essential for the city? The case of the disappearing wells and polluted lakes in the south Indian megalopolis of Bengaluru gives us some interesting answers to these questions.

Image 1
The well (in the foreground) of the old Begur Fort with its lone temple surrounded by apartments and children playing in the fields where history was once created. Photo: Hita Unnikrishnan

Earlier this week, we wrote a series of articles in a leading Indian newspaper about the importance of lakes and wells for urban social-ecological resilience in Bengaluru. One article described the disappearance of the thousands of private and public wells that once provided Bengaluru with water. In this piece, we called for a city-wide concerted effort to revive existing open wells, increasing the water security of the city.

As has become common, we received a number of comments on social networking sites. One particularly telling response revealed a viewpoint in stark contrast to ours: perhaps one held by several in the city. A friend commented that she’s glad to see wells disappearing because big open wells posed a danger to inquisitive children. While this is an acknowledged danger—and there are ways to work around this—the comment exemplified the mind-set of an urban population that has become reliant on piped water supply. The availability of piped water 24/7 often leads to the perception of traditional water storage, supply, and recharge structures, such as open wells, as useless, a waste of space that could be more usefully utilized for construction, or even as an environmental and physical hazard.

Image 2
A dhobhies well in the heart of the city, with water very close to the surface. Photo: Hita Unnikrishnan

Both of us live in upmarket urban neighbourhoods where piped water supply is available, but with intermittent supply. When water is supplied, houses across Bengaluru proceed with filling up household water storage tanks. When water does not come for a few days, the city depends on water tankers filled by borewells that are depleting the city’s ground water table at an alarming rate. Yet while most will complain bitterly when piped water is not provided for a few days in a row, rarely do people spare a thought to consider where the water comes from, from whom water has been taken to provide the city with water, and whether it is sustainable to depend upon piped water from distant sources, or whether alternative arrangements for enhanced water security have to be made. What happens to a city’s innate resilience when basic supplies such as water are brought into it from great distances—in this case, from a river over a hundred kilometres away? Which brings us to our original question: are old and once essential traditional supply mechanisms still maintained? Or, like its residents, does the city ignore its past and disregard those very structures that could guarantee its water resilience?

Image 3
A well (padlocked) visible on the compound wall of a temple. Photo: Hita Unnikrishnan

The modern day city of Bengaluru is built on the foundations of the medieval sixteenth century city founded by a local war chieftain, Kempe Gowda. Water supply in Bengaluru was always uncertain, with the city located in the rain shadow of the Deccan Hills. To provide the city with water, an intricate system of networked lakes was created in local topographic depressions. These lakes stored water, and replenished the shallow ground water table, functioning in association with smaller reservoirs called kalyanis, and with numerous open wells distributed across the landscape. Surface water was retained by the lakes, while recharge was performed by the wells.

The use of open wells as a source of water goes back much earlier than the sixteenth century; in fact, it goes all the way back to the dawn of civilization in India. Wells have been found in almost every site belonging to the Indus Valley Civilization, attesting to their persistence as well as their social importance.

Image 4
A well that is used by communities in the more impoverished parts of the city. Photo: Hita Unnikrishnan

One of the oldest forts in Bengaluru is the mud fort of Begur. The fort lies within a larger temple complex, where an inscription from the 9th century AD provides the first mention of the word Bengaluru. This fort, with its mud embankments, encloses a large open ground with a small temple. Behind the fort, an array of high rise apartments can be observed. Within this open ground, where inscriptions record stories of battles fought, lands recaptured, and tales of martyrs and saints, is a magnificent open well: a strong reminder that the availability of water can make or break a civilization. Embedded at ground level, disused, and with stone steps leading to the bottom and stone walls lining it, the inside of the well is dark. Yet, when we knelt down and peered into the well, we could still see the glimmer of water deep within.

Image 5
A community well under the shade of a banyan tree. Photo: Hita Unnikrishnan

We don’t know much about this well—perhaps its waters were drawn to worship and bathe the idol in the temple nearby; possibly laughing women with flowers in their hair whose anklets chimed in time to their footsteps came here to draw water for their households; or the well may have provided water to the weary soldier, trudging into his home after a long day of battle. Yet, there it stands, surrounded by a changing world with apartments in the background replacing agricultural fields and battlegrounds, still a reservoir of groundwater.

Each well of the city has its own story to tell—of a king who built the well for his people, of a well whose waters never went dry, of a well that was an indispensable resource for the poor, and of the thought and pride that went into its construction. While many people who live around the wells have recently migrated to the city, other elderly residents freely share the stories of these water reservoirs, speaking of them with pride, affection, and nostalgia.

Other information about the location and maintenance of wells in the past comes from maps and archives from the colonial period—crumbling, dusty, yellowing files with elegant, curved penmanship. These documents are evidence of the importance of wells to the social and environmental life of the past. There were different kinds of wells—public wells on roadsides, wells used for livestock living in the courtyards of houses, private wells within homes used to provide drinking water, wells inside temples used for worship, and wells belonging to specific communities like the washer folk (dhobhies) who used it for laundering. The links between lakes and wells were well recognized; some lakes were specifically retained without use, for recharging the open wells in their vicinity.

Image 6
This is a massive open well that provides water to the community and into which fish have been introduced. The movement of the fish within the water of this covered open well provide local school children with entertainment. Photo: Hita Unnikrishnan

As early as 1865, contaminated wells were recognized to be a source of major epidemics of the time such as cholera, typhoid, and malaria. Steps were taken—not to destroy the wells as is wont in today’s world—but to remove the sources of contamination. The creation of a new position of a Water Inspector, whose job it was to monitor the two thousand or wells in the city, helped to keep the wells clean. Wells were stocked with larvicidal fish to prevent malarial outbreaks, and monthly reports were provided on the condition of wells in the city. When Bengaluru experienced a severe drought in 1891, it was to the wells that people turned to meet their water requirements. During periods of intense drought, such as that experienced by the city in 1905, agriculture was halted to restock wells with water, compensating the affected farmers.

Yet, for all their importance, wells also came with their fair share of problems. Perhaps the most disturbing accounts from the archives are those that describe a time when, in the throes of an epidemic of plague, the city grappled with corpses of affected individuals by throwing them into wells. It must have been quite a harrowing experience for municipal authorities who had to maintain the wells and prevent their contamination in such situations.

Image 7
Another community well which provides water for domestic purposes. Photo: Hita Unnikrishnan

Wells often stood in the way of sewage channels and became contaminated with their contents. This, too, had to be taken care of. Sir Ronald Ross, the Nobel Laureate who was an officer on special sanitary duty in Bangalore during the cholera outbreaks in 1895, traced the transmission of cholera to wells contaminated with sewage and refuse which percolated through the soil, from which water was drawn for cooking and drinking. He coordinated a program to map all the public wells in the city, and to have them disinfected, or closed down in irreparable cases.

By 1898, lakes and wells ceased to be an important source of water in the city following the construction of reservoirs outside, with piped water supply to urban homes. For a few decades, despite the provision of water from distant rivers, the wells of Bengaluru continued to be maintained and used as important water sources. While many of the city’s lakes were converted for other forms of land use such as sports stadiums and malls, wells were valuable supplements of water for local residents and communities.

Over time, with the decline of the dependence of the city on its lakes, the use of kalyanis and wells also decreased. In the past couple of decades, there has been a steady loss in the number of functional open wells in the city. Using old maps from the 1880s, we find that there were about 1500 mapped wells (presumably public wells) in the old native city and cantonment; by 2014, that number had gone down to a handful: 49. Over time, some of these structures have become decrepit ruins that led to some fatalities, mostly of children who fell into them.

Yet, wells continue to be used by some communities. The dhobhies have never really given up their dependency on wells. Some of the best-maintained wells in the city are those that are used by dhobies. In many low-income areas, wells provide water security in conditions where the municipal water supply is erratic or contaminated. Other wells that are preserved are centuries old wells within temple complexes, used for worship and domestic consumption. Some wells that have been preserved within the homes of people are used both to recharge groundwater and as an alternate source of water to these families.

Image 8
A well that is a reflection of the most rudimentary type of drawing water—the yatam—with its stem, drawing rod, fulcrum and water very close to the surface. Photo: Hita Unnikrishnan

Many of the old wells in the city are a visual delight. Ornate stone structures, some have lovely spiralling stone steps right down to the bottom. One open well hosts another well within its depths, while several bear beautifully crafted pulleys. Some wells retain the form and structure of the wells of old—a simple fulcrum stem, a base stem, and a drawing rod taking the place of the pulley, with specially handcrafted buckets. Other wells also exist, their structures intact, the glimmer of water captured in sunlight, despite their state of disuse. They provide hope for the city, if only they could be revived and utilized.

The advent of piped water supply did reduce the perceived necessity for wells and lakes: but why, then, do some wells persist? Our field studies clearly indicate that wells have survived only where people see a value for the water they provide. Contamination with sewage, lowering of the water table, and a lack of access to wells are factors that lead to the disuse of many wells now.

For a city to be resilient, it has to harness its innate resources to withstand change. Bengaluru is an example of a city that has provided infrastructure for its residents from afar, while neglecting to build capacity within itself. As a result, Bengaluru has wells that could and do hold water, but they also hold a whole lot of other things: leaf litter, plastic wastes, flower garlands, dead animals, and other garbage. Some magnificent wells are hemmed in on all four sides, so that the only way one can get to them is by climbing onto nearby residents’ rooftops. But once one climbs up, on a lucky sunny day, one could be greeted with a magnificent view of an old stone well with spiralling steps, through which the sparkle of water is still visible.

Structures such as these provide hope—that someday, this sparkle of clear water may be recognized for what it is—the strength and resilience of the city against adversity. The communities of dhobies, temple priests and other groups who still maintain their wells, and use them with reverence and pride, instil hope that more of these structures may be revived (and many of them can with little effort) and used. Then, just maybe, we can progress further down a path of cultivating an ecologically smart, resilient urban scape in water-hungry cities. Such a path is not only relevant for Bengaluru: it holds importance for cities across the world that are facing problems of water shortage, from California to Sao Paulo.

Hita Unnikrishnan and Harini Nagendra
Bangalore

On The Nature of Cities

Harini Nagendra

about the writer
Harini Nagendra

Harini Nagendra is a Professor of Sustainability at Azim Premji University, Bangalore, India. She uses social and ecological approaches to examine the factors shaping the sustainability of forests and cities in the south Asian context. Her books include “Cities and Canopies: Trees of Indian Cities” and "Shades of Blue: Connecting the Drops in India's Cities" (Penguin India, 2023) (with Seema Mundoli), and “The Bangalore Detectives Club” historical mystery series set in 1920s colonial India.

10 scientists and 10 practitioners walk into a bar…what would they talk about? How can research and knowledge generation be co-created to better support practitioners and evidence-based decision making?

Art, Science, Action: Green Cities Re-imagined
Regularly, we feature a Global Roundtable in which a group of people respond to a specific question in The Nature of Cities.
show/hide list of writers
Hover over a name to see an excerpt of their response…click on the name to see their full response.
Myla Aronson, New Brunswick Scientists and practitioners may have more questions than answers, but we are communicating, and this is the start for successful biodiversity conservation and management in our world’s cities.
Georgina Avlonitis, Cape Town Vulnerability and passion are the links between the science and policy arenas.
Keith Bowers, Charleston Biohabitats recently created Bioworks, an intra-disciplinary practice dedicated to integrating robust research into the practice of ecological restoration and conservation planning. 
Sarah Charlop-Powers, New York A new initiative called NYC 2050 Nature Goals is designed to bring academics, public land managers, and the non-profit conservation community together in New York City.
Ana Faggi, Buenos Aires Researchers should work on more effective collaborative forms by emphasizing concrete problems and by paying attention to regional or, if applicable, global, problems.
Haripriya Gundimeda, Mumbai Scientists and practitioners agree that the scientific community needs to mobilize to design programs and indicators that are pragmatic to support conservation decisions.
Bram Gunther, New York City A new initiative called NYC 2050 Nature Goals is designed to bring academics, public land managers, and the non-profit conservation community together in New York City.
Amy Hahs, Melbourne We need to make the feedback and evaluation stage a common element of project delivery wherever possible, either through formal mechanisms or informal mechanisms.
Fadi Hamdan, Beirut Scientists and practitioners regularly take decisions in their careers. These decisions must be subject to the same scrutiny as the “official” decision making process.
John Hartig, Detroit For several decades the International Association for Great Lakes Research has worked with others to better inform policy-makers to advance sound public policy and decision making.
Mark Hostetler, Gainesville I think the conversation that ecologists and practitioners would have in a bar is how to make an online tool that is menu driven.
Maria Ignatieva, Uppsala The most difficult questions are how to “translate” research results to make them understandable not for only practitioners such as city planners, landscape architects, or engineers, but for city administrators and politicians.
Michael Jemtrud, Montreal Research that embraces the counterfactual is a mode of provocation that agitates the disciplining inherent to disciplines—it’s a critical device in collectively imagining what we ought to do, not just what we can do. 
Deborah Lev, Portland In Portland the Urban Ecology Research Consortium makes connections between researchers and practitioners.
Louise Lézy-Bruno, Paris By de-compartmentalizing academic and operational fields and promoting teamwork, we can help researchers, practitioners, and decision makers work together.
Yvonne Lynch, Melbourne We need to focus the lens on reality and combine intellect and resources to advance the outcomes for urban nature.
Ian MacGregor-Fors, Veracruz Many actors can be identified in bridging the gap between knowledge and its application; however, willingness will always be a cornerstone.
Charlie Nilon, Columbia We need to view conservation issues as collaborative projects that involve residents, managers, and researchers rather than just implementing management practices or conducting research.
Diane Pataki, Salt Lake City Science informs, challenges, and verifies, but it can also inspire.
Jose Puppim, Tokyo Over-reliance on technical information and on the opinion of experts is occurring side by side with neglect of local knowledge and lack of effective public participation from non-technical actors in decision-making.
Rebecca Salminen Witt, Detroit Successful collaborations require shared goals, focus, and a commitment to plain language.
Eric Sanderson, New York City A new initiative called NYC 2050 Nature Goals is designed to bring academics, public land managers, and the non-profit conservation community together in New York City.
Philip Silva, New York City Knowledge co-creation cuts two ways. How can scientists help make valid management knowledge that isn’t scientific?
David Maddox

about the writer
David Maddox

David loves urban spaces and nature. He loves creativity and collaboration. He loves theatre and music. In his life and work he has practiced in all of these as, in various moments, a scientist, a climate change researcher, a land steward, an ecological practitioner, composer, a playwright, a musician, an actor, and a theatre director. David's dad told him once that he needed a back up plan, something to "fall back on". So he bought a tuba.

Introduction

A horse walks into a bar. The bartender asks: “Why the long face?”

Countless jokes start with an introduction of odd couples and diverse sets entering a bar to set up a joke or observation about differences in perception. And so: 10 researchers and 10 practitioners walk into a bar…

Many researchers desire to see their work used in policy and practitioner action. Many practitioners crave knowledge that they can use to make better decisions or to take more effective, evidence-based action. It’s a match, no?

Yet across disciplines—from biodiversity conservation and ecosystem services to community gardens and landscape design—researcher-practitioner interactions can be distant, fraught, or unsatisfying. Sometimes this is just a lack of effective fora for communication. Sometimes it is the lack of a shared vocabulary. Other times it is a disconnect of modes of working, in which researchers are rewarded for synthetic and theoretical work, but practitioners have more basic knowledge needs.

The respondents to this question include practitioners, city managers, international NGO policy analysts, scientists (biophysical and social), and designers. How can we evolve modes of interaction that advance both research and practice? Can such diverse actors co-create useful knowledge?

Myla Aronson

about the writer
Myla Aronson

Myla Aronson is an urban ecologist at Rutgers University, NJ. Her research focuses on the patterns and drivers of biodiversity of cities to better conserve, restore, and manage biodiversity in cities.

Myla Aronson

Urban ecologists are looking for their research on the ecology of cities to be applied to conservation and management of biodiversity in cities. Practitioners are looking to urban ecologists to help bridge research findings into practical applications of day-to-day management. But how do we bridge the gap between scientists and practitioners?

Communication, data sharing, and collaborative research are key to bridging this gap. Communication can be enhanced through data sharing and collaborative research, but also through initiatives such as The Nature of Cities and UrBioNet. My colleagues and I recently established UrBioNet: A global network for urban biodiversity research and practice, funded by the U.S. National Science Foundation. UrBioNet has been established to develop a network that brings together researchers, practitioners, and students with an interest in biodiversity in cities. The network provides a forum for discussion, data sharing, and collaboration on topics relevant to urban biodiversity research, management, design, and planning. Communication between scientists and practitioners can also be achieved with college level ecology courses that incorporate project based learning through internships or projects with practitioners.

Practitioners have treasure troves of data. This data spans from hard numbers on endangered species populations to knowledge from trial and error on restoration practice. Rarely do managers have opportunities to synthesize these data and knowledge. Data offer an avenue for knowledge transfer and collaboration between scientists and practitioners. Sharing data across cities, countries, and continents has allowed us to better understand the role cities play in biodiversity conservation (for example, see Aronson et al. 2014). At the local level, sharing data will allow us, together, to develop best management practices for biodiversity.

Ecological research in urban areas is inherently collaborative. However, we need more opportunities to bring together scientists and practitioners. Better mechanisms for funding of research, better facilitation for scientists to perform their research in cities (i.e., less red tape), and research that incorporates practitioner experience and knowledge are all needed. Collaborative research efforts such as the Center for Resilient Landscapes, which combines academic scientists and students with practitioners at Rutgers University, USDA Forest Service Northern Research Station, and the New Jersey Agricultural Experiment Station, are starting points for successful collaborative research.

Incredibly, we don’t even know the full biodiversity of cities. Recent research in cities has shown that cities house a surprisingly high diversity of species. At the global scale, cities house over 20 percent of the world’s bird species (Aronson et al. 2014). The discovery of new species is no longer confined to far-off, exotic places such as the Amazon Basin. In New York City, Jeremy Feinberg, a graduate student at Rutgers University, recently discovered a species of frog, hidden cryptically on Staten Island, and never described before, despite the long history of natural sciences in New York City (Feinberg et al. 2014). In Los Angeles, Emily Hartop and colleagues at the Natural History Museum of Los Angeles discovered 30 new species of flies in urban backyards (Hartop et al. 2015).

Despite these new and exciting discoveries and the explosion of research by natural and social scientists in cities, we still have a limited understanding of how biodiversity—the plants, animals, insects, fungi, and even soil bacteria—function in urban habitats and how we can effectively conserve and manage biodiversity in these landscapes that have been designed and managed for humans.

So, when scientists and practitioners and get together, what do we talk about? We talk about how we can work together effectively to conserve and manage biodiversity in our cities. We ask big questions: How can we manage habitats in cities at multiple spatial scales? How can we use the data we have to create targets/thresholds for urban management? What are realistic goals for invasive species management? What are the best management practices for restoration of native habitats? What are the factors important to measure for monitoring urban forests? What tools can we use to communicate and synthesize management/restoration findings?

We may have more questions than answers, but we are communicating, and this is the start for successful biodiversity conservation and management in our world’s cities.

References

Aronson, M.F.J., F.A. La Sorte, C.H. Nilon., et al. 2014 A global analysis of the impacts of urbanization on bird and plant diversity reveals key anthropogenic drivers. Proceedings of the Royal Society B 281: 20133330.

Hartop, E.A., B.V. Brown, and R.H.L. Disney. 2015. Opportunity in our Ignorance: Urban Biodiversity Study Reveals 30 New Species and One New Nearctic Record for Megaselia (Diptera: Phoridae) in Los Angeles (California, USA). Zootaxa 3941: 451-484.

Feinberg, J.A., C.E. Newman, G.J. Watkins-Colwell, M.D. Schlesinger, B. Zarate, B.R. Curry, H.B. Shaffer, and J. Burger. 2014. Cryptic Diversity in Metropolis: Confirmation of a New Leopard Frog Species (Anura: Ranidae) from New York City and Surrounding Atlantic Coast Regions. PLOS One: 10.1371/journal.pone.0108213.

Georgina Avlonitis

about the writer
Georgina Avlonitis

After finishing up her Master’s degree in urban ecology from the University of Cape Town in 2009, Georgina worked on biodiversity informatics and ecosystem based adaptation at ICLEI’s Cities Biodiversity Center. She then joined the Greenpop team. When she is not heading up Greenpop programmes across Southern Africa, you can find Georgina walking the soles off of her shoes or cooking up a Greek storm in the kitchen.

Georgina Avlonitis

Some ‘Touchy-Feely’ Stuff at the Bar

During my post-graduate years studying urban ecology, I eagerly ranted about my research findings to city officials and to my dismay, I watched eyes glaze over and feet start to shuffle as the communication disconnect set in. This was not due to any lack of fervent intonations and gesticulations from my side—I was convinced of the importance of my findings—but I was, of course, focusing on all the wrong aspects of my work. It may as well have been a soliloquy in Greek. And now, during my professional career, I realise I could not blame them, because when forced to sit in a room of scientists debating complex and unfamiliar methodological approaches, I’ve ashamedly found my mind beginning to wander and my feet doing that same shuffle, while half expecting my head to explode.

Street art by Mark Samsonovich
Street art by Mark Samsonovich.

Scientists and policy-makers certainly do all sorts of ‘talking’: they talk at each other, on top of each other, about each other, past each other. More often than not, they speak across each other—speaking about the same issues, but in completely different languages. For example, scientists often define evidence from a methodological perspective while policy makers define evidence from a relevance perspective—this is why policy priorities often drive the use of research, rather than research stimulating policy recommendations.

But how to create bi-directional, collaborative communication, where scientists and policy makers communicate with each other?

I could write about suggested solutions such as: the use of third party science-communicators; how to jointly involve decision-makers and scientists in all phases of research, including the development of the questions and the interpretation of results; or approaches for the development of effective platforms for dialogue—but we’re still not addressing the heart of the issue: that collaboration and co-creation needs connection. Which is why I’m choosing to focus on something a bit ‘softer’ and much more fundamental.

If I had to stick policy makers and scientists into a hypothetical bar, I’d probably first hand them over a strong whisky, to soften the edges and loosen them up a bit. Then I’d get them to speak about what makes them passionate about what they are doing and then—no cringing allowed—I’d get them to make themselves vulnerable. And by vulnerable, I don’t mean walking around with a box of tissues crying about things. I mean having an open conversation about some of the deeper, more human, more visceral elements of work: explaining where you’re unsure; talking about the complex challenges that wake you up at 2am; describing what gets you out of bed in the morning to go to work; explaining what excites you or completely devastates you about the field you’re in.

More often than not, vulnerability and passion are the links between the science and policy arena—it’s where the bravado dissipates, where the commonalities lie, where the challenging, exciting realities surface, where humanity is exposed; it’s where the conversation opens up and where the ground is leveled for better relationships, for honesty and communication. It’s something as simple as admitting: ‘I don’t know what I’m doing right here, with this.’

Policy-makers typically aren’t interested in science per se (although some are); they are interested in research evidence insofar as it helps them to make better decisions (because without adequate information—let’s be honest—they wouldn’t really know what they were doing). Scientists are enamored with their fields of inquiry and, coupled with an interest in promoting their work and ensuring research funding, this can sometimes lead to convoluted reporting of results and, very occasionally, exaggeration. But ultimately, if policy makers and scientists could open up about where they are unsure, could make themselves vulnerable around the effectiveness of their work and decisions, could share the real reasons why the potential impact of their work excites them (or doesn’t)—therein lies the connection! Only then can parties help to better fill the gaps, to reshape the objectives, and to enhance the relevance and impact of each other’s work.

Some ‘touchy-feely’ suggestions:

  • Reinvent the meet-and-mingle: Formalise more informal networking events/sessions where individuals from science and policy arenas can socially interact in your institutions/departments and most importantly have fun while doing so.
  • Personal relationships run the world: Take some time to get to know scientist/policy-maker peers, before launching into hard work-talk. Look for a common spark and learn what really matters to them and how you can help. It goes without saying that people are more likely to want to engage in your work if they feel a personal affiliation with you.
  • Stick your neck out: Be interested and ask more questions. “You can make more connections in two months by becoming interested in other people than you can in two years by trying to get other people interested in you.” — Dale Carnegie
  • Get outside: There is no better way to remember why it is you’re doing what you’re doing and share some common ground than by taking meetings/workshops into nature. (It also boosts creativity and productivity.)
  • And lastly and most definitely, build in more time at the bar: This goes without saying.
Keith Bowers

about the writer
Keith Bowers

For nearly 30 years, Keith Bowers has been at the forefront of applied ecology, land conservation and ecological restoration. As the founder and president of Biohabitats, Keith has built a multidisciplinary organization focused on regenerative design.

Keith Bowers

More than once, while enjoying a pint with a group of my fellow restoration researchers and practitioners, I have wondered how many of us occasionally covet each other’s jobs.  Don’t get me wrong, as the leader of Biohabitats, Inc., my passion and vocation is the practice of ecological restoration. But when I talk to researchers, I sometimes find myself thinking: “I wish I had the time and resources to integrate controlled, replicated experiments into all of our work.” And conversely, I suspect that my research colleagues may occasionally think: “How cool. I wish I had the time to participate in the design and implementation of restoration projects like Biohabitats does”.

Practitioners and researchers are united in so many ways. Our passion for restoration, our desire to continually improve the success of ecological restoration and our aspirations for healing damaged or destroyed ecosystems keeps us all going. Why, then, is our work so often disconnected? Although Biohabitats includes dozens of team members with academic research experience, and we often attend scientific conferences and review the latest journal articles, we seldom come across academic research that can be directly applied to our current body of work.

Conversely, while we have so many lessons learned to share from the design and implementation of hundreds of projects, we neither have the time nor resources to publish the work. And even if we did, we would most likely not meet the standards of peer-reviewed journals. In our daily work, Biohabitats rarely has the opportunity (time and funding) to embed experimental designs to evaluate hypotheses in an academically rigorous way, and our colleagues in universities rarely address the myriad constraints that we encounter in the real world of implementing restoration projects.

How can we let this continue? If there is one thing we know for sure, it is that the problems our work tries to solve are substantial and mounting. And as a society, we don’t have the time or resources to perpetuate failure.  We need practical solutions based on rigorous science now.

We need practitioners informing experimental designs; we need researchers working with us to evaluate projects; and we need to pool our resources to find the best solutions out there. Some of these challenges can be addressed by purposeful collaboration between private companies and like-minded universities and research institutions. Others would benefit from third party support, such as grantors that explicitly require collaborations that bridge not only disciplines but also sectors.

In response to these felt needs, Biohabitats recently created Bioworks, an intra-disciplinary practice dedicated to integrating robust research into the practice of ecological restoration and conservation planning. Our goals are threefold. One, to develop hypotheses and embed applied experiments into all of our work, thereby establishing a rigorous foundation for collaborative research with universities, research institutions and non-government organizations. Two, team with these same organizations to purse funding to jointly research cutting edge solutions to some of our most pressing problems in achieving successful outcomes for ecological restoration. And three, to widely share this information in a practical, easily accessible way with the thousands of practitioners that are toiling day-to-day in the rivers, wetlands, woodlands and fields across the planet.

We know this important work cannot be done alone in a silo, by a single entity, institution or discipline. So if you are interested in joining this collaboration, join me for another pint and let’s make this happen!

Haripriya Gundimeda

about the writer
Haripriya Gundimeda

Dr. Gundimeda is a Professor in the Department of Humanities and Social Sciences at the Indian Institute of Technology Bombay; and the President of URBIO. Her main interests are green accounting, mitigation aspects of climate change, energy demand and pricing, valuation of environmental resources, and issues relating to the development in India.

Haripriya Gundimeda

What does it mean to make the two ends—biodiversity science and policy making—meet?

Scientist: Biodiversity is very essential for life. However, we are losing it at a faster rate than before and the number of endangered and extinct species are increasing. For conserving biodiversity, the underlying biological processes need to be understood well and adequate emphasis has to be given to building stable and resilient systems.

Practitioner: Yes, biodiversity needs to be conserved, but the goal is harder to achieve than to say. Biodiversity is not just a mere collection of individuals, but is characterized by highly complex and nested interactions among the species. Further, the complexity of scale and level of organization makes it more complicated to build into the planning process. Do we have some rules to set conservation policies and what conservation requires?

Scientists: We need habitat inventories for the presence and abundance of various dominant and associated species.

Practitioner: Given that there is dearth of ecologists, can we meaningfully inventory all the habitats? How can we decide which is more important—bryophytes, invertebrates, mosses, lichens, vascular plants, etc.? Do we have closely aligned practical indicators to measure the success of various conservation efforts?

Scientist: One can measure the success of conservation in already protected areas through measuring changes in the number and relative abundance of species—keystone, flagship, umbrella, threatened, endangered, endemic, and focal species—and the distribution, turn over, diversity, and quality of ecosystems. However, it requires time and resources. Numerous measures may have to be identified. Classify the areas as risky and non-risky areas and ensure full conservation in risky areas.

Practitioner: It is not possible to carry out inventories in all areas; protected areas may have some of the above indicators already, but what about areas which are not protected, yet are important. Resources are limited, and there are trade-offs. Can we use some criteria? For example, we say biodiversity should be conserved because it enhances the well-being of people now and in the future. Can we look at nature as providing ecosystem services to people and should we be considering the economic value of these benefits to people? Such an approach helps policy makers in prioritizing areas that provide maximum benefits and also justify investments.

Scientist: We differ. Ecosystems are complex and the services are not separable. Moreover, values are dynamic and change as the structure of society changes, despite that ecosystem services remain the same. Moreover, there may be conflict in this case as the ecosystem service provided in many cases may not have market value attached. Quantifying cultural, spiritual, and existence values is difficult. The studies are still limited and it is possible that pristine ecosystems are left out. This would have deleterious impacts for the conservation of ecosystems.

Practitioner: Yes, we agree that there are trade-offs in functions provided by ecosystems and prioritizing one would be at the cost of another. But we need a metric to measure what to conserve and the outcome of our actions. How to measure the outcome and the actions needed to conserve for effective policy making? We need something which is cost-effective. Can scientists offer right indicators and legitimate criteria to choose one area above another?

Scientist: Yes, it is a bit difficult, complicated, and contentious, but we agree that the scientific community needs to mobilize to design programs and indicators that are pragmatic to support conservation decisions. Probably while we get the right science and science right, can we at least agree that biodiversity conservation is an integral part of development plans? And can we rope in private communities to finance conservation?

Practitioner: Yes, whatever it means to make both the ends—biodiversity science and development policy—meet.

Bram Gunther

about the writer
Bram Gunther

Bram Gunther, former Chief of Forestry, Horticulture, and Natural Resources for NYC Parks, is Co-founder of the Natural Areas Conservancy and sits on their board. A Fellow at The Nature of Cities, and a business partner at Plan it Wild, he just finished a novel about life in the age of climate change in NYC 2050.

Bram Gunther, Eric Sanderson, and Sarah Charlop-Powers

“Never doubt that a group of thoughtful committed citizens can change the world; indeed, it is the only thing that ever has.” — attributed to Margaret Mead

This is a quote that could have come from a conversation over a beer. But now it’s the adopted motto of a new initiative called NYC 2050 Nature Goals, designed to bring academics, public land managers, and the non-profit conservation community together in New York City. The Natural Areas Conservancy, a new voice in the urban conservation world, is leading this initiative in collaboration with the Wildlife Conservation Society, founded 120 years ago to conserve wildlife globally and teach about wildlife through urban zoological parks such as the Bronx Zoo and New York Aquarium.

NYC Nature Goals 2050 brings together people who work in over 25 different institutions and are invested in New York City urban conservation and ecological restoration. What makes this effort interesting is that (1) as a group we are focused on all resources within the city lines, from the estuary to the uplands, from the natural to the built, and from the public to the private; (2) we are not explicitly policy focused, but rather aspiration focused; and (3) at the first three workshops each individual is representing his or her own values. Only in the last workshop do we sync our individual values with our institutional missions. To this end, we will hope to write a “constitution” to facilitate alignment among groups in different spheres (research, government, NGO, community), so that our sum is greater than our pieces.

Our conversation about goals follows a trajectory from function to composition to structure (Redford and Richter 1999). Function is about what interactions we want from nature, answering the question: “why have nature in the city?”

We held a meeting on this topic in March and the five top consensus answers that emerged were:

  1. Biodiversity and habitat—NYC nature provides living environments for species
  2. Coastal protection/resilience—NYC nature mitigates damage from coastal storms
  3. Water quality—NYC nature absorbs and filters water from runoff
  4. Connectivity—NYC nature enables movements of species through the city
  5. Inspiration—NYC nature encourages humanity creativity and appreciation of beauty.

Composition focuses on what components of nature are necessary to fulfill the functions outlined, helping us articulate: “what nature in the city?” We just held a meeting on composition and are digesting the results now (native species as opposed to introduced ones were strongly endorsed, for example.)

Structure is perhaps the hardest of the three: it answers, “how much nature or in what configuration is it required to fulfill the functions outlined”. Here we expect to come up against some difficult questions about nature in the city: how much salt marsh provides coastal protection? What configuration of nature assures connectivity for migratory birds? How large does a natural area need to be to inspire? We expect to generate a set of research questions tied to the nature goals of this kind.

At a fourth meeting, to be held in December, we will ask members of the advisory group to speak to the goals not as individuals, but as members of institutions.

In this initiative, we are making a space for individual values to be aligned ultimately with institutional values—this combination is a powerful force and hews to the Margaret Mead quote above. The driving goal of the NYC 2050 Nature Goals is to ask folks to think in a visionary way. This vision and the long-range aspirations for our City that we identify as a group will influence our short-range goals, capacity to coordinate efforts and initiatives, and decide our ultimate directions.

In our workshops, we’re deliberately staying focused on the process rather than the outcomes per se, so that our ideas can fly above the usual and lead to places not envisioned before, drawn from and shared by researchers and practitioners.

If this conversation does spread to “bar” talk, the more the better.

Eric Sanderson

about the writer
Eric Sanderson

Eric Sanderson is a Senior Conservation Ecologist at the Wildlife Conservation Society, and the author of Mannahatta: A Natural History of New York City.

Sarah Charlop-Powers

about the writer
Sarah Charlop-Powers

Sarah Charlop-Powers is the Executive Director of the Natural Areas Conservancy, with a background in land use planning, economics and environmental management.

John Hartig

about the writer
John Hartig

Dr. John Hartig is a Visiting Scholar at the Great Lakes Institute for Environmental Research at the University of Windsor where he is undertaking interdisciplinary research on the cleanup, restoration, and revitalization of the most polluted areas of the Great Lakes.

John Hartig

Strengthening the Science-Policy Linkage in the Great Lakes

Human population growth has caused numerous stresses on ecosystems, including habitat destruction and modification, chemical contamination, introduction of invasive species, and more. Recognizing the need to strengthen the science-policy linkage, the International Association for Great Lakes Research (IAGLR) has long been involved in addressing this in the Laurentian Great Lakes. IAGLR is a scientific organization of over 900 researchers studying the Great Lakes, other large lakes of the world, and their watersheds. IAGLR members encompass all scientific disciplines with a common interest in management of large lake ecosystems.

Informing public policy with sound science has long been recognized as a vital need for effective management and protection of the Great Lakes. However, delivering scientific findings to policy-makers in a timely, useful manner has been problematic. Policy-makers have often lacked timely access to scientific information. And when they do have access, this information is often too technical and needs interpretation to be truly useful for decision-making.

For several decades IAGLR has worked with others to better inform policy-makers to advance sound public policy and decision making. IAGLR efforts have included:

• Identifying research needs to better guide management;
• Advocating for sufficient funding to support better science-based decision making;
• Convening an annual conference that disseminates science to a variety of audiences;
• Converting all back issues of the Journal of Great Lakes Research (the foremost collection of multidisciplinary Great Lakes scientific knowledge in the world dating back to the 1970s) into an electronic format with public access;
• Building a web-based directory of IAGLR scientists to provide advice to policymakers;
• Helping educate elected officials and key policy-makers through periodic briefings;
• Issuing routine news releases on timely research from its journal and annual conference; and
• Developing specific recommendations on strengthening the science-policy linkage on specific issues like aquatic invasive species, contaminated sediment, and “How clean is clean?”

More recently, IAGLR was a partner in the U.S.-Canada Detroit River-Western Lake Erie Indicator Project that compiled long-term trend data on 50 indicators that were interpreted and translated for policy-makers and managers. Over 20 IAGLR members were involved in this project that resulted in many restoration and enhancement projects. Another project provided specific advice for a more strategic approach to habitat conservation in the watershed of the Detroit River and western Lake Erie.

Recommendations included:

• Greater emphasis should be placed on quantifying habitat targets to help evaluate and select appropriate habitat conservation techniques, and to measure project success;
• Pre- and post-project monitoring requirements should be added to all federal, state, and provincial permits for habitat modification;
• Partnerships should be established at the outset for monitoring the effectiveness of each habitat modification project, including use of citizen science;
• Sound science can help increase the ecological effectiveness of habitat conservation efforts;
• Technology- and science-transfer sessions should be convened regularly to share ideas and knowledge, and to achieve cooperative learning relative to habitat management.

A third recent example of strengthening the science-policy linkage was the Great Lakes Futures Project designed to assess past and potential future states of the Great Lakes-St. Lawrence River Basin, inform strategic policy formulation, frame research priorities, and help train the next generation of Great Lakes leaders.

Professional societies like IAGLR can use their credibility and resources to strengthen the science-policy linkages and better support practitioners and evidence-based decision-making. Clearly, a long-term commitment will be needed and such professional societies can provide continuity over time. The work of the IAGLR in the Great Lakes Basin Ecosystem could be a model for other professional societies to help strengthen the science-policy linkage and better support practitioners and evidence-based decision-making. See this link for more information.

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The Great Lakes
Ana Faggi

about the writer
Ana Faggi

Ana Faggi graduated in agricultural engineering, and has a Ph.D. in Forest Science, she is currently Dean of the Engineer Faculty (Flores University, Argentina). Her main research interests are in Urban Ecology and Ecological Restoration.

Ana Faggi

Researchers should work on more effective collaborative forms in order to become visible to the community by emphasizing concrete problems and by paying attention to regional or, if applicable, global, problems. This points out the role of the scientist at present: an individual who is dedicated to generating and communicating the necessary knowledge to reduce the risk and uncertainty in decision-making.

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Researchers of the Flores University explaining the advantages of phytoremediation at the ExpoBIO, in Buenos Aires.

A researcher is a creator as well as an innovator who increasingly understands that his work must become a tool for new prosperity. The image of isolated researchers who are interested in creating further knowledge for their cognitive motivations only is obsolete. But, the new researcher requires active interaction with decision makers and practitioners.

In many countries, specialization and the prioritization of basic research has caused separation between “research” and the generation of knowledge that is relevant for future management decisions.

As an example, in Argentina, the National Parks Administration originally had a scientific body dedicated to the generation of that knowledge necessary for conservation and management. Over time, research moved to the universities and other institutions, where researchers studied other topics and the significance of knowledge of parks management lost relevance.

Considering that scientists are part of a collective enterprise, opportunities to do collaborative work with different stakeholders should be a strength. These scientific-technical or scientific-administrative synergies can, through debate and controversy, create the missing knowledge that will reduce uncertainty and will facilitate the work of practitioners.

We are currently working on a collaborative project between the city of Buenos Aires and our university, the Flores University. The Environmental Protection Agency was interested in rehabilitating the banks of a polluted river with native trees. They asked the university for advice, as we have experience in phytoremediation with marsh plants. In the end, both organizations began in March with a pilot project planting native vegetationalong 100m of the “Riachuelo” riverbanks, which we are analysing and monitoring. Through this collaborative research we are attempting to develop expertise that can be replicated to other municipalities and transferred to practitioners.

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People from the University and the Buenos Aires Environmental Protection Agency working on a collaborative project to remediate contaminated riverbanks at the Riachuelo River.
Amy Hahs

about the writer
Amy Hahs

Dr Amy Hahs is an urban ecologist who is interested in understanding how urban landscapes impact local ecology, and how we can use this information to create better cities and towns for biodiversity and people. She is Director of Urban Ecology in Action, a newly established business working towards the development of green, healthy cities and towns, and the conservation of resilient ecological systems in areas where people live and work.

Amy Hahs

In my personal experience of integrating science and practice, the best discoveries and insights have emerged through the direct interactions and conversations with other members of the cast, who come from different disciplines, institutions and perspectives. Therefore, while I think there are some opportunities to improve the way actionable science knowledge and outcomes are shared between groups, I strongly believe that the engine room for change and evolution will be at the level of individual interactions.

When it comes to these individual interactions, how would I describe the ideal scenario? I think that open channels of direct communication are critical, and they need to be ongoing. There may be great interactions and collaboration over the course of a project, but too often they effectively stop once the project has been delivered. The evaluation of the project itself, and the process that was undertaken, then ends up being conducted internally within individuals or perhaps disciplines, if it happens at all. This means that we are missing out on an important opportunity to continue learning and evolving our modes of interaction. We need to look for ways of making this feedback and evaluation stage a common element of project delivery wherever possible, either through formal mechanisms (i.e., written into the proposal) or informal mechanisms (committing to catch up for a coffee and chat shortly after the project delivery).

project-eval
A common communication loop I have experienced during projects integrating science and practice. Most of the communication and learning (thick arrows) occurs during the project itself, and rarely during the evaluation stage (narrow arrow). An ideal scenario would see a much greater volume of interactions occurring outside of the project phase, either as a debriefing session focused on that specific project, or as a longer ongoing conversation.

We also need to find ways of respectfully expressing feedback and initiating dialogue around the things that didn’t work. These conversations may be difficult, but they are imperative if we are to address any tensions arising from institutional or disciplinary perspectives.

Steven Handel proposed that ecology and landscape architecture are in a period of their relationship where marriage therapy may be required. Relationships between people can only fully evolve if we are willing to share our full experiences, and we are committed to listening and working through our differences.

One idea which may help navigate these differences would be to think about disciplines as producing paintings with different styles. We become very good at recognising and interpreting the key features within the paintings we are familiar with, but it is more difficult to interpret works produced in a contrasting style. If we are experts at Impressionist landscapes, it is difficult to understand how to incorporate Romantic portraiture into our work. This is where the ongoing dialogue between diverse actors is critical. The best outcomes will emerge when we can become better “art historians” and increase our fluency of interpretation across a broader range of painting styles. This shared understanding may even lead to an entirely new movement, with a style all of its own.

When it comes to more formal avenues of communication, I suspect there is something about the process of peer review, as well as the expectations of journals about what is “of interest”, that limits the type of information and learning that can be shared in these forums. Personal conversations may continue to be the most effective way of sharing this information, and often can occur at conferences and other settings. Options for increasing the number of participants in the conversation may involve online fora and other activities that make the most of our sophisticated virtual technologies.

Something to keep in mind throughout these discussions is that some actors may not have the means or desire to navigate new disciplines. This means that a person who does enter this interface of science and action essentially becomes an Ambassador within the different realms. Amongst our colleagues and peers we may become a point of contact for others who are interested in engaging with this collaborative model of thinking and working. When we visit the realms of our counterparts, we help to bridge the divide between disciplines. If we continue to do our jobs well, then we will not only deliver better outcomes ourselves, we will also have helped to grow the momentum of effort in this area.

Evolutionary change often occurs in response to pressure. Our current efforts to integrate science and practice have evolved in response to the pressures of developing sustainable, resilient, biodiverse cities and towns. The evolution within our efforts will be shaped by the internal pressures related to how this diverse range of actors start bringing together their different perspectives to deliver outcomes that are greater than the sum of their parts.

Fadi Hamdan

about the writer
Fadi Hamdan

Fadi has more than 25 years of international experience in analysing the interaction between development, urbanism, disaster risk, climate change, conflict, and state fragility. Fadi cooperates with various companies, cities, and countries to protect people, assets, and the environment

Fadi Hamdan

Several scientists and practitioners walk into a bar. After deciding on drinks, they began discussing how research and knowledge generation can better support evidence-based decision making.

One of the scientists, who is trained to make a hypothesis and then to test it either to confirm its validity or modify it accordingly, started the conversation by making an assumption that scientists rarely bother to test. Namely, the scientists believed that they do not take any decisions, they simply apply scientific tools effectively and objectively. It is the fault of “practitioners” or “decision makers”, who are not always capable of understanding the scientist’s “objective” scientific advice, when things don’t go smoothly.

One of the practitioners commented that decision makers come in different shapes and forms. But they all know that the decision making process is far from straightforward; even in the best of the functioning democracies, the decision making process is subject to gate keepers, as well as legal and illegal lobbying and legal and illegal modes of expressing and withdrawing support. And that was even before the age of globalisation, whereas nowadays, big capital and large multi-nationals can more easily void or threaten the prospects of effecting change as a result of a democratic election simply by threatening to withdraw their support, including in terms of investments and jobs.

That is why we find near unanimous agreement that the decision making process in any field must be subject to a governance framework, with checks and balances to ensure that all perspectives and points of view are being accounted for “as far as reasonably practicable”.

Another practitioner agreed and gave an example from the field of Disaster Risk Management, where there is agreement that the decisions related to the use, production, and distribution of natural and government resources (e.g. water, land, tax payers’ money, air, etc.) lead to a particular distribution of benefits, exposure, vulnerability, risks, and, increasingly, disaster losses. Furthermore, these benefits and associated exposure, vulnerability, risks, and losses are unequally distributed between sectors (e.g. industrial vs. agricultural or, increasingly, financial vs. industrial and agricultural). They are also unequally distributed between countries (if we look at the earth resources as a whole) and, indeed, within any country. That is why, in functioning democracies, these decisions are, as far as reasonably practicable, subject to scrutiny that practitioners like myself call a “Risk Governance Framework”.

Another scientist agreed that scientific advice is not always subject to the same scrutiny within this Risk Governance Framework. She gave an example of the decision to construct a risk map for a particular hazard in a city (e.g. earthquakes) that accounts only for the physical and natural factors contributing to vulnerability (i.e. severity and frequency of earthquakes and the state of building and infrastructure stock). Such a map is based on a decision that it is acceptable to ignore the social, economic, and institutional factors that contribute to vulnerability. She continued that this is equally true in other cases for other hazards affecting cities, including flooding, storms, sea surges, drought, etc.

Another practitioner commented that, in many instances, we end up with a situation where the decision makers know they are right, the scientists believe they are right, and affected people living in cities with deteriorating infrastructure feel something is not quite right.

After a few drinks, the scientists and practitioners agreed to ask non-specialists, their fellow citizens, sitting in the bar for their perceptions. Based on their reaction, most of the two groups then agreed that to improve the science-policy interface, to promote evidence-based decision making, and to account for societal apprehensions and concerns, decisions and recommendations provided by scientists should lie within the Risk Governance Framework.

Mark Hostetler

about the writer
Mark Hostetler

Dr. Mark Hostetler conducts research and outreach on how urban landscapes could be designed and managed to conserve biodiversity. He conducts a national continuing education course on conserving biodiversity in subdivision development, and published a book, The Green Leap: A Primer for Conserving Biodiversity in Subdivision Development.

Mark Hostetler

I can imagine a conversation about urban development between scientists and practitioners sipping on their favorite beverages would go something like this:

Practitioners: When designing a site for development, there are many constraints that basically boil down to time and money. Conserving open space here and there means less buildable space. Even conserving vegetation on lots and between lots and saving individual trees and small patches of trees, buffers, and soils takes effort and planning. Where should our efforts be placed to retain biodiversity and minimize impacts? When moving a road or adjusting the location and size of built and conserved spaces, can we quickly evaluate the impacts on different species? We need to balance the developers’ needs and economic realities with biodiversity concerns, so we need rapid assessments of the biodiversity value of different designs.

Scientists: Well, how a site design impacts biodiversity depends on the species in question, the landscape context, and the spatial configuration of built and conserved areas, such as the sizes and locations of forest patches. It is complex and there is not an easy way to assess different species across several designs.

Typically, scientists and practitioners both fall back on generalities: saving large patches of land and trying to connect remnants across a landscape. But how big must the patches and corridors be for different species? Can small patches and built areas be designed with biodiversity in mind? Built areas (e.g., native landscaping and conserving trees within home lots) and small fragments (e.g., utility easements) can serve as habitat for a variety of species, such as small birds, insects, and small mammals. Further, built areas need to be compatible with conserved areas in order to minimize impacts. But these areas typically get lost in the shuffle and are not incorporated into a conservation design.

The realities of urban development leave very little time to conduct field research in order to determine the best designs for biodiversity. Practitioners need a quick way to assess different designs so they can demonstrate “bang for their buck”. Is saving those strips of trees, native landscaping, and natural remnants worth it? For what species?

Moving forward, I believe collaborations need to ensue where ecologists and practitioners develop a biodiversity evaluation tool that would work with the realities of urban planning and design. In a previous blog, I mentioned that if ecologists developed biodiversity metrics for different species, these metrics could be linked to a GIS-based evaluation tool (CommunityViz®). This tool would output indices that are related to how various designs impact different species. However, I now think the tool needs to be much simpler—not GIS-based—because many developers and planning departments do not have the time or money to run CommunityViz® analyses. This comes from conversations with practitioners and the reality that running CommunityViz® analyses may be a barrier to evaluation of urban designs.

I think the conversation that ecologists and practitioners would have is how to make an online tool that is menu driven. This would mean ecologists would assign (through systematic reviews of the literature) some relevant metrics that are linked to specific taxa and to spatial geometries that practitioners could manipulate. Practitioners could input, for instance, the patch sizes of conserved areas, how much tree canopy is conserved, and whether native landscaping is used across built areas and percentages landscaped this way. Ecologists would create equations that are species specific and, when linked to patch sizes, tree canopy cover, and percent of native landscaping, could generate diversity scores. These diversity scores should be easily interpretable and transparent about how different designs benefit or negatively impact species.

This is not easy! For example, some migrant bird species, such as forest-interior birds, need “core habitat” during the breeding season and practitioners need to know how big a patch (and shape!) gives enough core habitat for a good chance of successful reproduction. Complicating things, these same forest-interior species can use smaller patches as stopover sites and overwinter areas; thus, both large and small patches are important during different life history stages. The tool would not only need to have diversity scores that account for large patches and shapes during the breeding season but smaller ones for migrating and winter seasons.

In the end, I think there will be several iterations of an effective biodiversity evaluation tool, and the discussion between our scientists and practitioners would turn towards what practitioners could easily calculate and manipulate in urban design, and what ecological data could be formatted and linked to these design variables. Ultimately, this evaluation process would give comparable outputs, leading to optimal solutions.

Maria E Ignatieva

about the writer
Maria E Ignatieva

Maria is working on the investigation of different urban ecosystems and developing principles of ecological design. Her latest FORMAS project in Sweden was dedicated to the lawn as cultural and ecological phenomenon and symbol of globalization.

Maria Ignatieva

How can our scientific research can be effectively used in practice?

raingarden

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Rain garden (top) vs. Conventional local cleaning facilities, CLFC (bottom, showing reconstruction of engeneering networks and elements of stormwater sewage). Rain gardens are much cheaper and do not need special legal agreements. They help decrease the pressure to CLCF for up to 80-90 percent of surface water. A rain garden is a landscape architecture (LA) design element compared to CLCF, which needs special LA design considerations.

Use of research results is one of the most desirable slogans in modern landscape architecture. However, the most difficult questions is how to “translate” the research results and make them understandable not for only practitioners such as city planners, landscape architects, or engineers, but for city administrators and politicians who make final decisions and proof the cities’ budgets.

Actually, in all grant applications today, scientists are required to think about communications of their results with a stakeholders. I would like to share with you one example, in which I was involved directly, with such a “translation” of the research into practice in a real neighborhood in St. Petersburg, Russia.

Here a group of young landscape architecture practitioners (Andrey Bashkirov and Sergei Shevliakov) were inspired by my lectures for master’s and PhD students about new ecological designs, particularly on implementations of Low Impact Design—an environmentally friendly ecological design approach aimed at managing urban stormwater and promoting biodiversity. The area of Novoe Devyatkino neighborhood, with multistory residential buildings, required immediate help due to flood issues in common green areas. In 2013, the landscape architecture firm Sakura presented a concept design based on the introduction of LID devices such as rain gardens. Realizing that LID requires an interdisciplinary approach, social research (questionnaires, interviews, and observation studies) were also conducted in the summer of 2014. The analysis of these questionnaires has shown the importance of water (a lake). The majority of people valued the lake as a major attraction and expressed a need for the development and improvement of the shoreline. People found rain gardens very attractive and were satisfied with their appearance and conditions.

Rain Garden. June 2014
Rain Garden. June 2014
Social survey (Biana and Tuula). June 2014
Social survey (Biana and Tuula). June 2014

From the very beginning of this project we realized that the most effective tools for attracting politicians, administrators, and contracts was the economic factor. That is why the conceptual design was combined with a calculation of costs. Our economic research comparing costs of design and implementation of traditional waterstorm management practices and LID practices (rain gardens and swales) clearly indicated that rain gardens are much cheaper and do not need special legal agreements (figures above). They help to decrease the pressure on Conventional Local Cleaning Facilities (CLCF) for up to 80-90% of surface water. A rain garden is, in itself, a landscape architecture design element compared to CLCF, which need special landscape architecture considerations. The cost of creating the rain garden was 1557 rubles (including plant material) compared to 1862 rubles per hectare for conventional facilities (not including design, legal negotiations, and plant material costs). The management costs of LID new devices are also very low compare to traditional methods.

Team work of young administrator Olga (on the left), landscape architect (Andrei) and the researcher (Maria). November 2013.
Team work of young administrator Olga (on the left), landscape architect (Andrei) and the researcher (Maria). November 2013.

One of the conclusions of this project was that conventional thinking is still strong in Russia, but young administrators are more open to new, innovative designs, especially when they can see an economic profit. We also found out that for the success of the new LID practice, it is crucial to educate contractors and implementation teams in the “right” management approach.

Other positive lessons from the realization of the Novoe Devyatkino project were the introduction of a social survey practice (directly involving local citizens in the design and management process) and the implementation of educational boards. The positive attitude of local administrators and local citizens toward this innovative landscape architecture practice gives us hope for the introduction of LID into a wider urban context within Russia.

Reference

Bashkirov, A., Shevliakov, S., Petter, B., Irishina I., Eriksson, T., Ignatieva, M. (2015) Implementation of Low Impact Design (LID) in Russia. In: M.Ignatieva, N. Thorne, E.Golosova, P. Berg., P. Hedfors, T. Eriksson, D. Menzies (eds). History of the Future. 52nd World Congress of the International Federation of Landscape Architects Congress proceedings. 10–12 June 2015. Saint-Petersburg, Russia. Peter the Great Saint-Petersburg State Polytechnic University Polytechnic University Publishing House, St. Petersburg. Pp.22-23.

Michael Jemtrud

about the writer
Michael Jemtrud

Michael is an Associate Professor of Architecture at McGill University and Founding Director of the Facility for Architectural Research in Media and Mediation (FARMM).

Michael Jemtrud

A Case for the Counterfactual Project

There are moments when a problem quite simply has to be solved and consolidating resources and expertise is a relatively straight forward, sensible, and effective thing to do. There are numerous examples in which researchers effectively collaborate with practice, industry, and government to solve problems (see Note). However, the “pragmatic efficacy” of instrumentally linking research and practice has significant limitations in imagining alternative futures, practices, and ways of acting in an era defined as the anthropocene. It is here I would like to make a case for the counterfactual as a productive and mediating mode of collaboration between research and practice.

As Graham Harman states, “pragmatic success often occurs on the basis of half-truths or outright falsehoods. In such cases we do not always leave our theories intact simply because they seem to be working. Quite often, we change our theories to give them wider applicability and a better capacity to handle possible surprising cases.” He goes on to say, “Architecture might make theoretical decisions that are unnecessary in the current practical state of the art, for the simple reason that truth has a greater power, reliability, flexibility, and allure than mere practical success” (Harman 2013, p. 213).

Research-through-design is a formally recognized methodology of inquiry that is productive and characterized by its fabricative nature. Proposals are made and outputs are varied, from drawings, models, simulations, and time-based representations to policy and strategic documents. In its most potent form, it is an inclusive, multi-stakeholder, cross-disciplinary, project-based activity. As such, it is messy and gains its value as research and practice from this messiness. It is most often context specific and accepts the inevitably contested constraints, concerns, and worldviews brought to the table by the participants. As a productive mode of inquiry, it is self-aware of the fact that “praxis distorts the reality of things just as much as theory” (Harman 2013, p. 211).

Engaging in “What if? scenarios” can occur at a variety of levels, either historical reconsiderations or future propositional. For example, speculation ranges from the formalized and sensible “Urban Futures Method” for designing resilient cities to the utterly fantastic and counterfactual (Lombardi et al. 2012). Collaborating in this manner is a way of dragging the real world into the academy and the academy into the real world. It is a distortion of the conventionally formulated problematic wherein problem solving is surpassed but not left behind. Significantly so, research that embraces the counterfactual is a mode of provocation that agitates the disciplining inherent to disciplines. Like Harman, I am encouraging the counterfactual in all fields of inquiry. It is a critical device in collectively imagining what we ought to do, not merely what we can do.

Note

It can be argued that this is in fact the predominant model of research in the academy since WWII signaled by Eisenhower’s famous military–industrial complex speech in 1961. Suffice to say, this is not the place to get into the corporatization of higher education but it is a significant factor lurking behind the question at hand. Also see: Readings, B. (1997) The University in Ruins. Cambridge: Harvard University Press. Chomsky, N. (2011) “Academic Freedom and the Corporatization of Universities”. Online at: http://www.chomsky.info/talks/20110406.htm [Accessed 11 December 2014]: “it seems pretty clear that the shift toward corporate funding [for research in universities] is leading towards more short-term applied research and less exploration of what might turn out to be interesting and important down the road.”

References

Harman, G. (2013) Non-Relationality for Philosophers and Architects (2012). Found in Bells and Whistles: More Speculative Realism.

Lombardi, D.R., et. al. (2012) Designing Resilient Cities: A guide to good practice. Watford, UK: BRE Press.

Deborah Lev

about the writer
Deborah Lev

Deborah Lev is about to retire from the position of City Nature Manager for Portland Parks & Recreation in Portland, Oregon, overseeing natural area management, environmental education, urban forestry, and community gardens.

Deborah Lev

400 urban ecology researchers and practitioners walk into a symposium. What happens? Research is summarized, questions are answered, contact information is exchanged and relationships are kindled.

In Portland (Oregon, USA) this is an annual event of the Urban Ecology Research Consortium (UERC). “UERC is a consortium of people from various educational institutions, state and federal agencies, local governments, non-profit organizations and businesses, as well as independent professionals and students, interested in supporting urban ecosystem research and creating an information sharing network of people that collect and use ecological data in the Portland/Vancouver area. The mission of the UERC is to advance the state of the science of urban ecosystems and improve our understanding of them, with a focus on the Portland/Vancouver metropolitan region, by fostering communication and collaboration among researchers, managers and citizens at academic institutions, public agencies, local governments, non-profit organizations, and other interested groups.” (from the UERC website).

The 13 year-old annual symposium provides a forum to present research findings in 8 minute presentations in sessions which have included topics such as wildlife, stream health, ecological processes, vegetation, water quality, public perception, and urban canopy. A poster session and inspirational keynote speakers (including David Maddox, convener of this Roundtable) as well as networking opportunities complete the daylong event. Proceedings of past symposia can be downloaded from the UERC website.

UERC 2015
UERC Symposium 2015. Photo: Mike Houck

The regional focus has indeed fostered ongoing relationships within the Portland, Oregon/Vancouver, Washington area. Attendees are encouraged to directly contact researchers and a listserv keeps people connected with announcements and events. Popular presenters are invited to present at longer format brown bag presentations scheduled throughout the year.

As a local government natural resources manager, I have tried to base natural resource management decisions and policy on science and data. I understand from direct experience how hard it is to stay abreast of applied research related to invasive species control, stormwater best management practices (BMPs), and visitor attitudes, let alone academic literature in related fields such as ecology, ecosystem services, and climate change. I appreciate having UERC to provide connections in my region and the opportunity to share our own work. What else can practitioners do to build better relationships with the research community? I offer a few suggestions here hoping that others will add to the list and colleagues in the research community can offer suggestions for researchers to better connect with practitioners.

Suggestions for practitioners:

  • Collect data and make it available to others. Monitoring your treatments? Doing baseline assessments or before-and-after counts of plants and animals? Document your methods or adopt methods already in use by others. Share. Researchers may be interested in following up on your work or may find your results useful in identifying potential research sites.
  • Invite academic research on your property. Are you a land manager? Think of your land as an urban ecology research lab. A permit system can help ensure that you receive reports of data collected on your property and a better understanding of management issues. Have a particular management question? Consider sponsoring a graduate student’s research project at your local research institution.
  • Attend meetings and conferences. Organizations such as the Society for Ecological Restoration and professional organizations hold regional conferences that help connect research and practice.
  • Follow publications in your field. Journal subscriptions and individual reprints are expensive but many journals offer free subscriptions to regularly receive the journal’s table of contents and allow free abstract downloads.
  • Take advantage of outreach materials from agencies and research institutions. In the United States, the Forest Service does a great job of making research accessible. http://www.fs.fed.us/research/
  • Gather nine of your practitioner colleagues and head to a bar with some researchers. Bring those troubling questions from your applied work; let the conversations begin.
Louise Lezy-Bruno

about the writer
Louise Lezy-Bruno

Louise is Deputy Director of the Environment in the Paris Region. An Architect-Urban Planner with a PhD in Geography, she works on the cities-nature relationship. She is a member of the IUCN-WCPA.

Louise Lézy-Bruno

Is it a dialogue of the deaf?

In 2010, during the BiodiverCities conference we organized in Paris, I heard the manager of a national park of a large city in East Africa say that he and his city official counterpart had met for the first time on the plane to come to Paris. Two administrations, two jobs, with no conversation between them. But both had already met the researchers who came to ask both park managers and city officials questions about their fields.

The objective of this conference was, precisely, to gather around the table cities, parks managers, and the researchers working on the relationship between cities and parks. The researchers assumed the role of middle ground between the different tribes of managers.

But at the end of the conference, there was still a hint of disappointment in the air: the practitioners (in cities and parks) had presented the results of the actions they had managed to set up and the researchers had analyzed, even criticized, everything that had been accomplished…No wonder! The researcher is there to raise questions, the practitioner, to find solutions.

They are made for each other, it seems! Both are needed to develop an applied research process, even if they each intend to call into question the certainties of the other party. In practice, the researcher is the “troublemaker on duty” that comes into the practitioner’s field to analyze everything that goes wrong. The practitioner breaks his back to find solutions, which are inevitably a compromise between local knowledge, social demands, political pressures, limited human resources and budget constraints. In his mind, he has just resolved the squaring of the circle. Of course, he doesn’t greet the “researcher of problems”, coming into his field to give him lessons on what is good and what is not, with pleasure.

How can we be sure that the theoretical analysis of the researchers can be working tools for the practitioners? How can independent research support operational choices on the field?

We need to be more malleable with each other, more attentive.

For me, the answer is like cocktails: varied recipes produce different effects. The “Caipirinha” and the “Sex on the beach” are different. First, it is a matter of substrate: in the hot alcohol, the cachaça, and in the iced alcohol, the vodka, produce different results. The ingredients of the first are mixed in a shaker; in the second, the difference in densities of the ingredients makes up the whole. In the end, both results could be very good.

In other words, there is no single recipe for the dialogue between research and operational practice. We must simply have a common goal towards which to combine our different ingredients: either the mixture of different components forms the whole, or the superposition of the strata supports the entirety.

For example, long-term research deepens the questions that the immediacy of practice does not allow. In turn, the practitioner provides the fertile ground for the production of the researcher. In this way, the results of the scientific research should be able to fertilize the management practice. The wealth and independence of scientific research should be the substrate of practitioner action, the elements combining to both inform and support decisions. Likewise, the application of theory in practice enables checks of the theory’s validity.

In addition to basic research, the academy could incorporate more applied research. But it should also develop tools to disseminate scientific information and translate scientific language into technical and popular languages. We could develop more research programs associated with field actions, with research funding, or with orders from the field stakeholders.

By de-compartmentalizing academic and operational fields and promoting teamwork, we can make researchers, practitioners, and decision makers work together.

The trick is to know how to combine the minds and the spirits, and we will have a good cocktail!

Yvonne Lynch

about the writer
Yvonne Lynch

Yvonne is an Urban Greening & Climate Resilience Strategist who works with Royal Commission for Riyadh City.

Yvonne Lynch

If 10 scientists and 10 practitioners were walking into a bar, it’s entirely possible that they would not be walking in together. As the benefits and value to be gained through scientist-practitioner collaborations remain largely untapped, the time has come for the confluence of these divergent communities, so I hope this bar has a late trading licence!

A key challenge for urban nature-focused scientists and practitioners is the ability to affect the process of urbanisation itself. We know that nature and green infrastructure in cities is still regarded primarily for its amenity value instead of its essential ecosystem services provision. Grey infrastructure and the built form command priority and investment in both city planning and market processes. You could say that we have a relatively simple formula for how we grow our cities, and that formula is: grey in, green out. With climate change looming and population growth booming, there is no doubt that we need to transition toward a new way of developing our cities and towns.

What we need is the rapid co-production of relevant knowledge that can inform and transform urban policy and practice. This requires that research and practitioner communities establish effective partnerships, engage in an ongoing dialogue, and formulate research questions together. Currently, scientists and academics have limited incentives to undertake research that is focused on practice because research is normally orientated towards other academics rather than practitioners. There is often an optimism that the research will make its way back to practice. More direct contact between scientists and practitioners would go some way to remedying this situation and it would dramatically improve both the quality of research and policy practice.

So why is there limited interaction between scientists and practitioners? At this stage, I’ve been to more conferences, seminars, and symposiums than I’ve had hot dinners. I’ve yet to see a beautiful blend of scientists and practitioners together in major conference programs. I think it’s an area for improvement. Joint seminars and conferences between scientists and practitioners can help demonstrate the relevance of research to practitioners and the relevance of practitioners to researchers. It would definitely lead to more bar-time together.

National Urban Forest Master Class
Attendees in Melbourne at the National Urban Forest Master Class, 25 June 2015.

On 25 June, the City of Melbourne convened a National Urban Forest Master Class with the Victorian State Government and the 202020 Vision to advance planning and implementation of urban greening across Australia. We brought together over 200 local government officers, practitioners and researchers and provided them with a “How to Grow an Urban Forest” guidebook. The most important aspects of the Master Class for the practitioners were the focus sessions on demystifying the data and the science, communication, and effective partnership development. For the researchers and scientists, the critical component was an insight into the political and community contexts that frame policy development.

Neil Brenner’s work demonstrates urbanization is a process of constant transformation that leads continuously to the production of new urban configurations and constellations. We need to collaborate to understand that. Cities are the ideal canvas for research and we’ve never had more at stake in terms of how we’re developing. The deliberation at the bar needs to focus on how we can advance our ability to understand and solve complex problems together, how we can develop a shared understanding of our similarities, and, ultimately, how we can focus the lens on reality and combine intellect and resources to advance the outcomes for urban nature.

Ian MacGregor-Fors

about the writer
Ian MacGregor-Fors

Ian MacGregor-Fors is a researcher at INECOL (Mexico). His interests are broad, but he focuses on the responses of wildlife species to urbanization.

Ian MacGregor-Fors

Science and its diverse disciplines have both basic—or fundamental—and applied components. On the one hand, basic science relies on the exploration of unknown phenomena regardless of the potential applicability. The reason behind focusing on any given phenomenon, hypothesis, or topic in any basic science research varies from mere curiosity to continuation of previous findings in a similar line of thought. Applied science seeks to address specific needs or to solve practical problems based on preexisting knowledge gained through basic science research. However, there are cases—occurring more frequently in recent decades—where basic and applied sciences work together to generate the new information needed to tackle specific concerns from scratch.

Currently, planet Earth is experiencing important changes that have resulted in unprecedented environmental and social disasters. Poverty, water insufficiency, food scarcity, disease epidemics, climate change, and pollution, among other devastating problems, are at the top of the list of news headlines. Among other factors, this has resulted in a biased perception of science as a problem solving activity, setting aside and, often, excluding some of its most fundamental expressions. I agree that the basic/applied science ratio is dynamic and responds to a complex array of external factors; yet, some of those driving forces could tip the ratio out of balance.

The path that runs from generating scientific knowledge to its potential immediate application, if any, can be as diverse as the universe of evidence-based findings. It is important to underline that for scientific knowledge to be applicable, it needs to be robust and sufficient to integrally solve a given problem. Robustness of science usually depends on the spatial and temporal scale of its design, which often requires more than a single view to represent the nature of the phenomenon being studied. So not only are multiple studies generally recommended to have a complete enough picture of the tested hypotheses or described phenomena, but diverse views—venturing into the multi-, cross-, inter-, and even trans-disciplinary schemes—are also necessary to successfully achieve the desired results.

From my perspective, the cornerstone of scientific knowledge application is willingness from all implied stakeholders. Aside from the actors facing the problem, there are two other main components involved in this process: scientists and practitioners. One important ingredient behind the complexity of applying evidence-based knowledge is the number and type of involved actors. The number of scientists and practitioners needed in solving a practical issue generally depends on the magnitude or specificity of the problem. Although it may seem intuitive that having more actors solving a problem could increase its probability of success, it can also escalate potential complications. Something similar happens with the type of scientists and practitioners involved in the application of knowledge to address a specific need, where a trade-off arises as the degree of complexity increases due to including multi- to trans-disciplinary approaches. Nonetheless, emerging additional actors joining this interesting equation are currently bridging the gap of complexity when large and diverse stakeholder groups are required to address a specific problem; the most important of these additional actors are “evidence-based knowledge translators”—a blend between applied scientists and decision making practitioners.

Once the actors are defined and all parts share a common goal, an initial step could be to search for preexisting studies that could shed some light on the matter; there is an overwhelming amount of top-notch knowledge gathering dust in science journals! I am not suggesting that preexisting knowledge is generalizable and ready to use; however, it could represent a basis to depart from, saving valuable time and resources. Also at the initial stages of a project, languages—including technical ones—need to be equalized if one primary objective is to level the comprehension of all edges of a given problem based on first- or second-hand evidence-based knowledge.

Charlie Nilon

about the writer
Charlie Nilon

Charlie Nilon is a professor of urban wildlife management at the University of Missouri. His research and teaching focus on urban wildlife conservation and on the human dimensions of wildlife conservation. Since 1997, he has ben a co-principal investigator on the Baltimore Ecosystem Study (BES).

Charlie Nilon

This is an interesting and important topic, one that is certainly relevant to those of us who are trained as ecologists. This Roundtable’s question comes, in part, from the way that the field of urban ecology has developed over the past 20 years. Urban forestry and urban wildlife management are older fields with a strong focus on addressing issues and problems in cities. Lowell Adams (2005) reviews the history of urban wildlife management, noting the development of urban wildlife in the 1970s and 1980s as a sub-field of wildlife ecology and management, the field’s ties in the U.S. to urban planning and to state agency programs, and the strong connection to urban nature conservation programs in Europe, specifically those in the U.K. and Germany. Those programs all emphasized strong science but also application of that science to questions relevant to managers and planners. Two larger urban ecology initiatives from this period, the Man and the Biosphere program (MAB) and the U.S. Forest Service’s urban forestry research program, all combined research with an applied focus on management and conservation.

The last 20 years have been an exciting time in urban ecology. The start of major research efforts in the U.S., Germany, and the U.K. in the mid 1990s brought the study of urban ecosystems into the mainstream of ecology and mainstream ecologists into cities. In the U.S., the National Science Foundation’s long term ecological research projects in Baltimore and Phoenix consciously focused on addressing important ecological questions and continued their emphasis on a human ecosystem approach in studying cities. This research is important and has advanced our knowledge of urban ecosystems, but it does not always translate into information that urban residents can use or that managers can apply.

The gap between researchers and managers is in large part due to the distancing of questions that are important to ecologists from those that are important to managers, planners, and residents. Questions raised by urban residents and managers are viewed by those who fund research as “lacking conceptual focus” or as “unexciting”, or simply as topics not worthy of study by serious ecologists. Peer-reviewed journals often have similar views of applied questions and ask that authors limit management recommendations to statements on what managers should consider. Finally, many university faculty view students interested in careers in management as being not quite good enough, forgetting that universities educate the large majority of managers.

But managers raise questions that are difficult for researchers. Managers are responsible for a large number of native and non-native species across a diverse landscape. Managers often work at a site-scale rather than the landscape or ecosystem scales preferred by many researchers. Managers work with constituents who have perspectives on management that are often different from both managers and ecologists, and managers work for agencies and organizations that may not place a priority on nature conservation. And, managers may not view urban ecologists and the research they do as useful or helpful.

A solution to bridging the gap between researchers and managers in cities may be in viewing conservation issues as collaborative projects that involve residents, managers, and researchers rather than just implementing management practices or conducting research. An example of this approach is Milwaukee, Wisconsin’s urban forestry program’s efforts to replace street trees in low-income neighborhoods. The forestry program worked with residents and with researchers at the University of Wisconsin-Milwaukee to identify neighborhoods that were poorly served by the existing tree planting program. The project led to a new approach in working with neighborhoods as part of the city’s tree management program.

References

Adams L. (2005) Urban wildlife ecology and conservation: A brief history of the discipline. Urban Ecosyst 8:139–156.

Diane Pataki

about the writer
Diane Pataki

Diane Pataki is a Professor of Biological Sciences, an Adjunct Professor of City & Metropolitan Planning, and Associate Vice President for Research at the University of Utah. She studies the role of urban landscaping and forestry in the socioecology of cities.]

Diane Pataki

This topic is timely as I’m one of the many researchers who would like to do more to translate knowledge into action. Yet, the notion that progress has been slow and difficult is familiar. In addition to common concerns about communication and process, I see an additional barrier to the integration of science and practice.

Scientists are trained to be critical. We are constantly critiquing ideas, methods, and results. Critique comes in many forms: manuscript and proposal reviews, supervision of student work, and discussions of new projects and findings with colleagues. There are always alternative ways of looking at data, uncertainties in methods and extrapolations, and better ways of conducting experiments and observations. Critique and skepticism are the scientific habits of mind, and with good reason—this is one central way in which we advance scientific understanding.

However, cities can’t be built on skepticism. To construct livable places, we have to envision, inspire, plan, design, and implement. We have to create instead of tearing down. Yet scientists are trained to continually challenge ideas, point out uncertainties, and highlight dubious assumptions. This must be done—there is an important role of examining uncertainties and assumptions of new ideas from a scientific perspective. But there is also a role for science that inspires. The opportunity to integrate scientific knowledge into a new vision for cities, one which translates our increasingly nuanced understanding of nature and human-environment interactions, has never been greater. How can we take advantage of these opportunities?

I have spoken with many practitioners and decision-makers in the cities in which I live and work. There is truly a desire to integrate good science into practice in these places. My research focuses on costs and benefits of different types of vegetation and landscaping in cities. There is wide consensus that re-vegetating cities has many benefits, as evidenced by many posts here and elsewhere. But “the devil is in the details.” Currently, I see a dichotomy in how scientists and practitioners approach this issue. On the one hand, the call for “more green, everywhere” has swept through cities the world over. But the possible configurations for constructed greenspace are virtually endless. Our research has shown (not surprisingly) that these configurations matter—particular plant types, species, and spatial arrangements have a large influence on the outcomes for greenspace, both positive and negative. In many cities, the commonly cited option of restoring native plant assemblages to urban areas is not feasible or even desirable (in arid cities, for example, where trees and other culturally important vegetation is not native). Given the range of options, science can and should inform new greenspace designs, which could be monitored and evaluated with the wide array of instrumentation used to study non-urban ecosystems. But to date, there is still a wide gap between urban ecosystem science and practice.

One way to bridge the gap may be to focus on developing the collective vision of scientists, practitioners, and stakeholders about the cities in which they want to live. Beyond the experiments, the methods, and the data, scientists have a role to play in helping to shape a vision of the future in which our best understanding of place-based ecology, the built environment, and well-being are all integrated. Such visions can be aspirational—even unattainable. And they will change over time. The process of envisioning and working toward a common goal may be enough, even if the goal is later refuted by new information, or otherwise never fully realized.

Critiques have their place, but so does the process of developing a shared vision in which scientific advances are part of an exciting new future for cities and urban nature.

Jose Puppim

about the writer
Jose Puppim

Jose A. Puppim de Oliveira is a faculty member at FGV (Fundação Getulio Vargas), Brazil. He is also Visiting Chair Professor at the Institute for Global Public Policy (IGPP), Fudan University, China. His experience comprises research, consultancy, and policy work in more than 20 countries in all continents.

Jose Puppim

Urban planning in many countries is a profession, so planning researchers work closely with practitioners. Indeed, the questions posed by this roundtable are objects of research in planning. The issue is broader than knowledge generation, but encompasses knowledge use and acceptance of knowledge. Knowledge in the urban planning context is embedded in the political, social, and cultural context. This is particularly relevant when knowledge is applied in practice and has economic and political implications.

For example, if a new road is been proposed, there are many ways the road could be designed (different routes, different widths, etc.), and each design will have a social, political, and economic implication. For instance, if the road is close to my house, it will increase the value of my house, but if it is too close, it may be a disturbance. Thus scientific and technical knowledge can help the decisions, but the final decisions in the urban context will be a political decision. There is no “definitive truth” or “neutral knowledge” in urban planning, and that is why cities are so different.

As a scientist/researcher, I truly believe that research can advance practice. But I am critical about the use of scientific knowledge in certain instances, which many times is used to empower the powerful (who can buy and use the best knowledge and hire the best technical people) and disempower the powerless (in general, the poor or the weakest in society, such as minorities). Over-reliance on technical information and on the opinion of experts is occurring side by side with negligence of local knowledge and lack of effective public participation from non-technical, other actors in decision-making. This creates an imbalance in the political process and also a sense of overconfidence regarding scientific knowledge that can be dangerous in many instances. Thus, the right direction for good planning is to figure out how to balance the different kinds of knowledge to make better planning processes and outcomes.

The best way to increase and advance interactions between different kinds of knowledge is public participation, which is a political process. Even though public participation can be a means to inform, consult, involve, collaborate, or empower (citizens and scientists); it can also lead to manipulation, coercion, and misinformation. How participation is integrated into decision-making process determines the benefits for specific land use planning outcomes along with legitimacy and fairness of the process. However, there is still a lack of understanding and scarce empirical research done on how the participation of different actors can effectively affect public interventions in land use planning, particularly those promoted by government and developers. What we know is that there is no “right way” to do participation, and an interesting point of participatory/interactive processes is that the outcomes can be very different, even among the same group of stakeholders or with the same people.

Rebecca Salminen Witt

about the writer
Rebecca Salminen Witt

Rebecca is the President of The Greening of Detroit, a 25 year old non-profit environmental organization that works to secure the ecosystem of Detroit.

Rebecca Salminen Witt

Consider this recent interaction between a medical researcher and a community leader in Detroit, Michigan:

Researcher: “We are currently studying the interaction between chemical and non-chemical environmental stressors in urban environments. We are planning to study the construction of Detroit’s new light rail system in this context. How can we engage nearby neighborhoods in our research?”

Leader: “Well, my neighborhood is not located along the new light rail line. All of the investment in this City is happening downtown. We need resources in the neighborhoods. We are constantly being studied, but no one is offering us any resources. Y’know what I’m sayin’?”

Both the researcher and the community leader are working to improve Detroit’s environment. Both are committed and passionate about their work. Each could be helpful to the work of the other. But clearly, they don’t have a common starting point from which to develop this potentially fruitful relationship. They aren’t even starting in the same neighborhood, much less walking into a bar together!

This exchange gets to the crux of our focus question. How can we fortify the hyper-local and generally self-interested work of the practitioner with the work of researchers dealing with theoretical concepts often designed to be applicable in a global context and rarely grounded in individual realities?

First, identify common ground. The researcher in this example wants his research to help reduce stress-induced disease. The community leader wants her neighborhood to benefit from the economic development that is the source of the stress that the researcher is studying. Could the researcher study the stress caused by being “left out” of the surge in economic development happening in other parts of the City? Could the Community leader draw attention to the needs of her neighborhood by participating in the study? If they were discussing this over a beer instead of in a conference room, would the conversation be more productive?

Next we should examine the language that these partners are using. Remember the community leader’s question in my example “Y’know what I’m sayin’?” Without thoughtful consideration of the language that they are using in their conversation with one another, neither one of these Detroiters is likely to know what the other is saying. The community leader is looking for resources to get vacant houses demolished and the empty lots mowed on her block. She hasn’t got the slightest concern for the “chemical and non-chemical environmental stressors in urban environments.” Yet she is clearly impacted by the environmental stressors in her neighborhood, and would likely benefit from the results of the proposed research.

Similarly, the researcher needs data, and just wants to talk to some real people who are likely to be affected by his target stressor. If the researcher had simply asked to chat about what was causing neighbors to stress out, he may have engendered a more helpful response. The community leader may have been able to recognize that she is suffering from stress brought on by her environment and might have seen some personal relevance in the research, leading her to participate. Similarly, if the community leader had focused her response on the proposed research instead of the needs of her own neighborhood, she may have found that the research was a resource in its own right.

What this conversation needs is focus and plain language. The next time these two walk into a bar together, I hope they’ll order a beer, take the time to figure out where their interests overlap, and work hard to communicate clearly about opportunities to pursue their common objectives.

Philip Silva

about the writer
Philip Silva

Philip's work focuses on informal adult learning and participatory action research in social-ecological systems. He is dedicated to exploring nature in all of its urban expressions.

Philip Silva

Let’s imagine that the scientists at the bar are out celebrating a new publication in a prestigious academic journal and the practitioners are celebrating the successful completion of a big environmental restoration project. Both groups raise their glasses to mark the end of two different knowledge-intensive processes. Their methods for creating new knowledge may be similar, such as natural resource managers using environmental sensing tools to collect data on the outcomes of their restoration efforts. But practitioners and scientists have different motives in their work and different rewards for a job well done. They make different kinds of knowledge for different purposes and they have different long-term expectations for the knowledge they produce.

We often speak of science as if it has a monopoly on the process of making new knowledge. Yet not all knowledge is scientific knowledge. Not all claims made on the basis of observation and evidence are exclusively scientific claims. Not all knowledge is codified using scientific standards, such as blind peer review or reproduction of research results. Science creates scientific knowledge. Other processes and practices produce other kinds of knowledge. We might debate whether science is an exceptional way to create exceptionally reliable knowledge or whether it is just one of many different methods for constructing stable meaning out of the chaos of reality—but that’s a debate for a different forum. For now, let’s just agree that knowledge making isn’t solely a scientific endeavor.

Harry Collins (2007) argues that, “Science, if it can deliver truth, cannot deliver it at the speed of politics.” Practitioners are often faced with day-to-day puzzles that go far beyond the knowledge found in textbooks or journal articles. Laws are passed, ecosystems are restored, polluters are punished, and natural resources are managed on the basis of sound scientific knowledge. Yet in plenty of cases, practitioners have to learn as they go and create their own useful insights into the problem at hand—either because the knowledge produced by science is incomplete or, in cases of complex and emergent systems, because the science doesn’t match reality. Waiting around for science to catch up with the chaos can lead to disastrous results, as Brian Wynne (1996) showed in his study of sheep farmers and regulatory scientists in northern England struggling to manage radioactive fall-out from Chernobyl in 1986.

Knowledge for management needn’t make a detour through the methods and conventions of science. It can, and often must, find its own path. When we speak of practitioners and scientists getting together to co-produce knowledge, we shouldn’t always give priority to the co-production of scientific knowledge, forcing practitioners to carve out a space for themselves in the practice of science and rarely expecting the same of scientists in the service of management. Funtowicz and Ravetz (1991) proposed the idea of “post-normal science” to deal with these issues nearly a quarter century ago, and though they came close to honoring the practical knowledge that comes out of daily management, they nonetheless created a theoretical framework that shoehorned all forms of knowledge production under the heading of science. Mainstream science, in return, has largely ignored their prescriptions—and rightly so. Science is science. Post-normal science is, well, something else; something like the knowledge making practices we see at play in day-to-day environmental management.

I’d like to see more practitioners becoming aware of the knowledge-making and knowledge-managing dimensions of their work. They may find useful insights and ideas in the knowledge that comes from science, but they also need to see themselves as insightful puzzle-solvers with wisdom to share with others in their fields.

In turn, I’d like to see scientists grow comfortable with the notion that other forms of knowledge production can bear a striking to science without having to actually be science. Intellectually informed management and epistemologically humbled science? It’s hardly an inspiring toast to rally our revelers, but all the same, I’ll drink to that.

Sustainability is Everywhere

Art, Science, Action: Green Cities Re-imagined

A review of Sustainability in the Global City, Myth and Practice, edited by Cindy Isenhour, Gary McDonogh and Melissa Checker. 2015. ISBN: 9781107076280. Cambridge University Press, New York. 426 pages.

As the introductory chapter states: “Sustainability is everywhere.” Indeed, what did we do before the introduction of the term? Sustainability in the Global City engages with the concept of urban sustainability from a sophisticated, skeptical, but sympathetic perspective. Through multiple case studies, it shows the complex and contradictory tensions that emerge in the concepts and practices for implementing greater sustainability. The programs described in the book are organized to highlight the ways in which sustainability initiatives impact social justice and equity, showing how, in some cases, it can entail positive change, yet increase domination by organized economic interests.

coverOne of the major contributions of this book is the use of ethnography to create detailed accounts of local histories, cultural meanings, and everyday lives. Embedded in the larger context of history, social and cultural expectations, norms, and political rules and organization, this perspective provides an understanding of how urban dwellers interact with the sustainability discourse, and how the programs can disguise otherwise purely modernist projects of displacement. The anthropological voice is welcome in uncovering the tensions and contradictions that emerge from sustainability initiatives.

The introduction does an admirable job of revisiting the origins and history of sustainability, placing it squarely in the negotiated outcome of the collapse of communism and the unfettered rise of neoliberalism. While it backs away from claiming that sustainability and sustainable development are fully co-opted concepts, better placing their origins provides greater understanding of how and why upscale, cosmopolitan, and politically liberal urbanites tend to be attracted to sustainability.

Chapters are organized into four parts: Building the Myth, Branding the Green Global City; Planning, Design and Sustainability in the Wake of Crisis; Everyday Engagements with Urbanity and “Nature;” and Cities Divided: Urban Intensification, Neoliberalism and Urban Activism. I liked that some chapters were theoretical and academic, drawing on literature, and that some were simple and direct vignettes. Cities from around the world are included and each place illustrates a different face of urban sustainability endeavors, from modernizing traditional laundries in Delhi and the impacts on the Dhobis (washer-people) and water resources, to ethnographic research on bicycling in Los Angeles and Seattle. The common thread throughout is that sustainability policies and programs affect people and communities differently depending on their status and degree of activism.

I highly recommend this collection of essays, and hope to have a chance to use it in teaching. It provides insightful and nuanced perspectives on how the language of sustainability is used, how programs get deployed, and their differential impacts on communities. The sophisticated way in which the concept and its origins get unpacked offer an important corrective to some of the dominant paradigms and definitions of sustainable development and sustainable cities that then allow a more critical rethinking of the terms and direction. By such thoughtful engagement, we may have a chance to reexamine sustainability, to develop more precise terms, and examining the full impacts in order to emerge to the next set of alternatives that can be more just. There is no doubt that integrated, less resource intensive, more human- and nature-oriented development and redevelopment is necessary. This volume helps us be more alert to unintended consequences and to the need for greater equity going forward.

Stephanie Pincetl
Los Angeles

On The Nature of Cities

Count Me In: Urban Greening and the Return of Primates in Kampala

Art, Science, Action: Green Cities Re-imagined

As urban areas explode around us, competition is heightened between nature and built landscapes. There is a salient competition between biodiversity on the one hand and structures—infrastructure installations—on the other. In Kampala, this competition is manifest in how deliberate actions of development clear natural areas for housing structures and infrastructure, thereby accelerating biodiversity loss. But it also manifests in the form of desire for aesthetically pleasing landscapes in the built-up patches of urban landscapes that are considered for leisure more than for ecological benefits.

Given the current debates around sustainable development and climate change mitigation, this competition is taking an interesting twist in which publically initiated programs and activities are starting to recognize the importance of nature and biodiversity as one among the various solutions.

In this article, I present a case of a municipally initiated effort to ‘green’ the city of Kampala with the motive of addressing climate change mitigation. This initiative has its good aspects, enhancing green patches and biodiversity, but also comes with problems depending on the choice of species planted for greening the city. Caught in the midst of global and regional debates about dealing with climate change, this low-emitting city of Kampala is embarking on a number of climate smart initiatives for mitigation and adaptation. One of these activities that the municipal authority is planning to embark on is the planting of 500,000 trees in the city. This sounds like good news for biodiversity and ecological enhancement, but it also comes with challenges from which lessons can be drawn on urban space creation and biodiversity.

Urban space as understood from everyday life

Urban space is an interesting combination of structures and green areas, as illustrated by many cities including Kampala. From a practical point of view, urban space goes beyond physical space to include social relations, processes, nature, and actors. Different urban spaces change in time according to function and the actors involved. For example, it is important to think about specific areas as residential zones to which people retreat to rest from work and vibrant city life. But these residential spaces are understood from everyday life experiences based on how an individual, group, or neighborhood makes use of the space.

To this end, it is possible to find commercial and/or production activities within residential spaces. It is this mix of functions, people, and relations that creates urban space. To illustrate this view, the street has also been described as an important spatial entity of understanding urban space, where a series of activities from trading, social relating, communication, networking, to commuting occur. There is little consideration of biodiversity as a component of residential urban spaces, yet we know that trees and animals exist in these spaces. It is also known that enhancing these spaces with urban forestry can pave the way for a return of animals if the forests measure up to habitats for such species. The return of animals such as primates and other medium sized animals redefines the urban space and can be a practical strategy for living in harmony with nature in cities such as Kampala.

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Photo: Shuaib Lwasa

Greening Kampala and the return of primates

As I mentioned earlier, Kampala City Council Authority is in the process of embarking on planting trees in Kampala, with a high target of planting 500,000 The species are yet to be determined, as this has to be elaborated by the Landscaping Unit of the city authority. The planting of trees is part of an effort to ‘green’ the city, where greening was initially conceived as getting more tree coverage in a city that is already considerably green. But greening has been expanded to include low carbon development and institutional energy balancing by the City authority. The loss of trees is occurring at an alarming rate, especially on hilltops and lowland areas in this tropical landscape known for dense vegetation and tree canopy. The city is located in an area that previously had natural land cover dominated by tropical rain forests that were habitat for primates. The remnants of these forests still accommodate primates, but these animals have moved or have been killed through time as built up areas intensified.

The greening activity is part of the effort to build climate resilience in the city, which has been envisaged to have multiple benefits. Green cover would enhance aesthetics, reduce common flash floods through increased infiltration, and sequester greenhouse gases. But one unforeseen possibility of the greening program is the return or increase of the primate population in the city as habitat is re-created. To this end, it is important for planners and practitioners of urban space re-creation in Kampala to think about tree species that would attract the return of primates, whose persistence has continuously communicated that they will not be left out of the city. Given this potential for the return of primates in big numbers, should greening be KCCA-led or led by a private developer? If there is appreciation of urban spaces that create harmony between nature and built forms, how can the greening activity be utilized to improve habitats and return primates to Kampala? What would be the motivations for increased biodiversity in the city?

Photo: Shuaib Lwasa

Competing motivations

In the process of greening, there are competing issues. The desire to identify with global initiatives of reducing emissions by sequestering greenhouse gases is motivated also by existing resource envelopes from which finances can be tapped by the city authorities. Thus, the selection of tree species is likely to be those with a high uptake of greenhouse gases—species that may not provide food and proper habitat for primates. Primates live in habitats with plenty of wild fruit trees from which to forage.

The other competing motivation for greening is the production of food by practicing urban agriculture. Though this can provide food for primates, urban agriculture tends to promote crops with high-value niches, which may not provide the right habitat for primates. And although, at the individual plot level, the motivation of aesthetic appeal achieved through landscaping may promote the return of primates, acceptance of their existence may not be guaranteed, as they may be seen as pests that should be driven out of urban spaces, residential or otherwise. Therefore, important considerations for the return of primates include tree species, planting systems, and who gets involved. Whereas the city authority’s plan to take the lead on planting the trees is plausible, the authority has very limited land, meaning that achieving their goal of 500,000 trees will remain challenging. Yet, this obstacle is also an opportunity if the authority recognizes the role that individual developers can do on their plots of land to plant trees towards the 500,000 goal. Since most land is held and owned by individuals, it is prudent that the approach to planting systems should involve the developers. A good number of hilltops are still covered by trees, and those cleared of trees can be replanted. The return of primates also has ecosystem co-benefits down the food chain, including increases in protein-rich insects, pollination, seed dispersing and ecosystem productivity.

How can greening pave the way for the return of primates in Kampala?

I summarize below the various ways that can be deliberately planned for the return of primates in Kampala.

  • The city is in an area that receives substantive amounts of rainfall ranging from 1200 to 1500 mm annually. With the established correlation between rainfall amounts and primate populations, there is a high possibility that well-targeted greening will pave the way for the return of primates in the city.
  • City authority-initiated greening is plausible, but may not be sufficient to achieve the targeted number of trees. Involving developers either through incentivizing tree planting or the inclusion of tree coverage on plots in development standards will most likely achieve the target in a more efficient way.
  • Tree species for planting are critical in that the inclusion of fruit-trees is important for the return of primates. This will ensure availability of food for primates, reducing fears about primates becoming pests and attacking homes in search for food.
  • Common fruit tree species in the area, such as fig trees, could be planted for the purpose of attracting primates.
  • Lowland areas and hilltops are appropriate areas for increasing tree cover and habitats for primates. There are co-benefits of focusing on these areas for increased tree coverage; if connected through vegetative corridors, these areas can enable primate thrive in the city. Hilltops and lowland areas covered mostly by wetlands in Kampala have a co-benefit of regulating hydrology of the city.
  • Incentivizing tree planting will be critical for Kampala to achieve its 500,000 tree target. Incentivizing can be in different forms. Municipal charges for development can be discounted with a clear tree-planting plan as part of the development. Providing seedlings and, where appropriate, subsidies for purchase may also be another way to incentive developers to engage in greening.

Conclusion

This article illustrates that urban spaces have largely been understood in physical terms and dominated by human population. Space definition, however, can be enhanced by including function such as biodiversity enhancement. Re-creating urban spaces in response to diverse motivations, such as climate change mitigation, is creating possibilities for the return or increase in the population of primates in Kampala. Though this may not be seen as an opportunity by many, the ecological benefits of primates in the city outweighs the risks associated with an increased number of primates. Living in harmony would be supported by targeted greening that includes planting trees that provide food for the primates while creating corridors that can enable migration, access to water, and a variety of food between lowland forests and hilltop forests. Given that Kampala lies in a tropical zone that receives substantive rainfall, the current small population of primates is likely to multiply, but attraction from nearby forest zones will also increase the primates in the city.

Shuaib Lwasa
Kampala

On The Nature of Cities

References

Daily Monitor Tuesday, February 19 2013, Creation of urban forests will help maintain good, predictable weather

Ministry of Lands and Environment, 2001, The Uganda Forestry Sector Policy

Steve Amooti Nsita, DECENTRALISATION AND FOREST MANAGEMENT IN UGANDA Forestry Department, P.O Box 7124, Kampala, Uganda

Urban Forestry, Resiliency. Sustainability. Habitat. http://sacredseedlings.com/urban-forestry/

Is There Room for Ornamentals in the Gardens of “New” California?

Art, Science, Action: Green Cities Re-imagined

California has long been a center of gardening culture. With a mild climate and a history of agricultural expansion followed by rapid urbanization, California’s ornamental gardens are populated by plant species and cultivars imported from all over the world. Many of these exotic species have become iconic, such as the palm trees, figs, and citrus of southern California. However, the current drought has brought wide recognition of the fact that most of these ornamental plants, from the palm trees of Rodeo Drive to Santa Barbara’s landmark Moreton Bay Fig, are supported by irrigation that is rapidly becoming a scarce commodity. So, is there a place for ornamental gardens in the new California? We’ve been studying this question for a number of years in Los Angeles and its surrounding municipalities, and fortunately, the answers are not as alarming as most people seem to assume.

Water conservation in irrigated gardens generally has three components: watering less; employing more efficient irrigation technologies; and changing the composition of garden plants (by removing lawns and non-waterwise species, for example). Many Californians have concerns about the costs of these measures and their implications for the aesthetic and recreational quality of urban parks and gardens. Just as “xeriscaping” became associated with mental images of sparsely planted cacti and succulents that were unappealing to most people, the new language of water conservation is “mandatory watering restrictions,” which brings to mind brown lawns and withered flowers. Is that the future of California’s cities?

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Banded trees at UC Irvine, where Pataki measured their water use. Photo: Pataki and Pincetl

We’ve extensively measured the water use of residential yards, parks, and also individual plants and trees grown in the Los Angeles area, and can consider each of these measures in turn. First, let’s think about irrigation efficiency. Reducing water applications without changes in technology or plantings is the “low hanging fruit” of outdoor water conservation, but most people are lacking information about the actual water requirements of urban landscapes. Excess irrigation is apparent virtually everywhere in California, perhaps most visibly in urban storm sewers and storm drains. As the name implies, storm sewers are meant to convey stormwater—that is, rainwater—away from streets and residences. However, looking at California’s storm drainage system at any given time of the year, including the “dry season”, one will find storm gutters and sewers full of running water. In the absence of storm events, most of this year-round “nuisance flow” originates from irrigation runoff. Excessive irrigation has been prevalent in most California cities for a number of years, and the consequences have been severe not only for water conservation, but also for water quality: irrigation runoff contains contaminants that pose serious problems in coastal waters due to eutrophication and bacterial outbreaks. To combat this issue, some coastal municipalities prohibit excessive runoff from residential properties, but these restrictions are very difficult to enforce. Widespread over-watering has simply become an accepted source of both water consumption and non-point source pollution throughout the irrigated western U.S.

The potential upside to all this over-watering is that eliminating it can be an effective means of meeting conservation targets without drastic changes to landscaping. But, how will residents know how much to water? Many water districts and state and local agencies provide guidelines, although we have found that these often over-estimate the actual water requirements of urban landscapes, particularly lawns shaded by trees or buildings. Online recommendations and calculators are a starting point, but many residents don’t access or properly implement them. This is where irrigation technology provides the next effective strategy in urban water conservation. Most people have a general sense that lawn and garden watering requirements vary with the weather: cooler temperatures = lower water requirements. Unfortunately, the ubiquitous irrigation timers found in most California homes have to be adjusted by hand to account for changes in the weather. And even with the best of intentions, most of us have probably failed to adjust or shut off these systems during foggy or rainy conditions. Newer systems use environmental measurements to do this for us: there are systems that record soil moisture onsite or that tap into California’s network of weather stations to automatically adjust irrigation schedules at the appropriate times, although the accuracy of the calibrations for these systems can vary. Of course, changing irrigation technology costs money, and the reality is that these new systems need to be widely incentivized by water districts to be implemented on a large scale. The good news is that they work: for example, we found that a soil moisture-based system tested in residential turfgrass at the South Coast Research and Extension Center in Irvine, CA had almost 100% irrigation efficiency, with virtually no water lost to runoff or drainage (percolation below the rooting zone).

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An example of what can replace a lawn—gravel with non-native, small, and unobtrusive plants. Photo: Pataki and Pincetl

Lawn watering practices and the extent of turfgrass in California cities are important aspects of urban water conservation. We agree that reducing the area of urban lawns should be an important aspect of water conservation strategies. Yet much of the appeal of California’s urban gardens is due to their stunning array of other types of ornamental plants. Many media reports highlight fears about the loss of valued ornamentals such as exotic trees, heirloom roses, and other flowering shrubs as a consequence of the current drought.

Is there a place for these species in the new California? Most definitely, the answer is yes. Of all of the plants that we’ve studied, lawns require the most water by a large margin, mainly because they are very shallowly rooted. In all ecosystems including cities, the deep soil is a storage pool of water, and plants that are deeply rooted have a far better capacity to withstand drought than lawns and grasses. Virtually all shrubs and trees, including ornamentals, use far less water than lawns, and can persist on infrequent (but deep) watering if they’ve developed adequate root systems. One significant factor limiting the success of these species is that most home irrigation systems are optimized to keep lawns green, not to properly water trees and shrubs. Further, some urban developments are built with relatively restricted soil volumes, and plants in these areas will be prone to drought stress regardless of watering practices.

SanJuanCap2
San Juan Capistrano, where ornamentals have been cultivated despite the drought. Photo: Pataki and Pincetl

Thus, there can be room for ornamental shrubs and trees in the new California, even for species that many presume to have high water requirements (roses, lilacs, ficus, and Eucalyptus to name a few), but cities will need the appropriate infrastructure to accommodate them, including adequate soil depth and irrigation practices that are optimized for deep root systems. Without these changes, the future of California’s urban tree canopy may be threatened as lawns are increasingly removed: while most people don’t specifically irrigate urban trees, California’s urban forest has long benefited from the excessive watering practices associated with lawns. Even large trees require far less water than lawns, but they still require some water in addition to local rainfall. This water will have to be provided by modest irrigation—at half the rate or less than current average outdoor water consumption—and the efficiency of the irrigation could be enhanced with low volume or drip irrigation systems.

Without proper stewardship of California’s urban ornamental gardens, the consequences for the new California will be dire. Urban trees and gardens provide a significant cooling effect, and large reductions in the extent of urban vegetation will exacerbate warming of California’s cities. What’s more, although the mechanisms are not well understood, many studies have found both physical and mental health benefits of access to urban vegetation. Finally, many people simply enjoy ornamental plants, as California’s active gardening culture shows. Ornamental gardens make cities more livable and enhance quality of life for many residents. So remove your lawn but keep your roses, and switch to infrequent, deep watering applied directly to the soil with no excess runoff. The new California will be better for it.

Diane Pataki and Stephanie Pincetl
Salt Lake City and Los Angeles

On The Nature of Cities

Stephanie Pincetl

about the writer
Stephanie Pincetl

Pincetl has written extensively about land use in California, environmental justice, habitat conservation efforts, urban ecology, water and energy policy.

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