Cities and Biodiversity Hotspots on Collision Course

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The western hemisphere’s conflict zones / © 2017 Richard J. Weller, Claire Hoch, and Chieh Huang, Atlas for the End of the World, http://atlas-for-the-end-of-the-world.com.

Nearly 400 cities around the world are currently on a crash course with irreplaceable ecosystems, according to new research from Richard Weller, ASLA, professor and chair of the landscape architecture department at the University of Pennsylvania School of Design, and researchers Claire Hoch and Chieh Huang. Weller shared his findings at the launch for the Atlas for the End of World, which maps these biologically-rich areas and the threats they face.

Agriculture and urbanization, fueled by population increase, pose the greatest threats to these ecosystems. Weller’s team discovered the coming conflict zones by overlaying cities’ 2030 growth projections with maps of threatened species’ habitats.

Some 142 nations preside over biological hotspots. Under the United Nations Convention on Biological Diversity, a multilateral treaty that sets guidelines for protecting biological assets, each signatory nation must set forth a strategy for protecting its biologically-rich areas. Using the Atlas, a country’s officials can determine where they should focus their conservation efforts.

Global conservation efforts have been underway for some time. Policies have been enacted to protect certain species and rehabilitate or fence off biologically-rich habitat. One of the Atlas’ maps visualizes all large-scale restoration projects, both planned and underway, globally. These efforts are “historically unprecedented and mark an evolutionary paradigm shift,” Weller said.

But, unfortunately, these conservation efforts are also fragmented and diminished in impact, as most occur outside of the hotspots. Weller drove this point home with an image of what he termed a “global archipelago,” the Earth’s landmass minus its unprotected areas. The result of this subtraction is a system of small, isolated patches of conserved land.

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What’s left of the world’s biodiversity in protected areas / © 2017 Richard J. Weller, Claire Hoch, and Chieh Huang, Atlas for the End of the World, http://atlas-for-the-end-of-the-world.com.

For conservation to have a meaningful impact, it must protect biologically-rich areas, and these areas must connect with one another. A new era of large-scale landscape planning is needed.

Complicating the issue, Weller acknowledged, is the fact that many hotspots occur within countries struggling with poverty and corruption. The man who logs illegally for lack of other work won’t abide by policies that favor habitat over his family.

At the launch, Eugenie Birch, professor of urban research at the University of Pennsylvania School of Design, suggested the protection of hotspots was tied up not just with food production and development, but larger themes of inequality and conflict. Solving conflicts would help to solve the other issues.

Weller emphasized the Atlas’s goals are modest. To solve the complex issues facing these hotspots, planners and landscape architects must get on the ground and work with stakeholders to intelligently guide development. Now, at least, they have maps to point them in the right direction.

Read Weller’s summary of the research.

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