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Assisted Migration: Redefining Nature and Natural Resource Law Under Climate Change

Alejandro E. Camacho

University of California Irvine School of Law; Center for Progressive Reform

April 16, 2010

Yale Journal on Regulation, Vol. 27, p. 171, 2010
UC Irvine School of Law Research Paper No. 2009-37
Notre Dame Legal Studies Paper No. 09-42

To avoid extinctions and other harms to ecological health from escalating climatic change, scientists, resource managers, and activists are considering and even engaging in “assisted migration” - the intentional movement of an organism to an area in which its species has never existed. This Article explores the profound implications of climate change for American natural resource management through the lens of this controversial adaptation strategy. It details arguments regarding the scientific viability and legality of assisted migration under the thicket of laws that govern natural resources in the United States. The Article asserts, however, that the fundamental tensions raised by this strategy are ethical: to protect endangered species or conserve native biota; to manage ecological systems actively or leave nature wild and uncontrolled; and to preserve resources or manage them to promote their fitness under future conditions.

The Article explains why contemporary natural resource law’s fidelity to historic baselines, protecting preexisting biota, and shielding nature from human activity is increasingly untenable, particularly in light of climate change. Active, anticipatory strategies such as assisted migration may not only be permissible but even necessary to avert substantial irreversible harm to ecological systems. Scientists and resource managers should focus on developing scientific data to aid analyses of the risks and benefits of assisted migration in particular circumstances. To help develop such data while minimizing ecological harm, the Article proposes provisionally limiting experimental translocations to situations where translocation is technically and economically feasible, and where the species is endangered, ecologically valuable, and compatible with the proposed site.

More broadly, assisted migration illustrates how the institutions and goals of natural resource law must be changed to better reflect a dynamic, integrated world. Climate change forces a radical reconsideration of the aims, foci, and standards of natural resource management. Accordingly, the crucial project of natural resource law must be improving governance by cultivating agency accountability and learning to better manage uncertainty, promoting opportunities for inter-jurisdictional collaboration, and fostering public information and deliberation over the tradeoffs of strategies like assisted migration and the resource values that matter.

Number of Pages in PDF File: 86

Keywords: climate change, global warming, adaptation, natural resources, assisted migration, managed relocation, assisted colonization, biodiversity, endangered species, ecosystem management, adaptive management

JEL Classification: K32. Q2, Q20, Q28, Q3

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Date posted: September 17, 2010 ; Last revised: November 9, 2010

Suggested Citation

Camacho, Alejandro E., Assisted Migration: Redefining Nature and Natural Resource Law Under Climate Change (April 16, 2010). Yale Journal on Regulation, Vol. 27, p. 171, 2010; UC Irvine School of Law Research Paper No. 2009-37; Notre Dame Legal Studies Paper No. 09-42. Available at SSRN: http://ssrn.com/abstract=1495370

Contact Information

Alejandro E. Camacho (Contact Author)
University of California Irvine School of Law ( email )
401 East Peltason Drive
Irvine, CA 92697-1000
United States
949-824-4160 (Phone)
Center for Progressive Reform ( email )
500 West Baltimore Street
Baltimore, MD 21201
United States
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