What Is Habitat?

Natural Resources & Environment Volume 34, Number 1, Summer 2019

2 Pages Posted: 28 Oct 2019

See all articles by J. B. Ruhl

J. B. Ruhl

Vanderbilt University - Law School

Date Written: August 17, 2019


This short essay summarizes and assesses the recent Supreme Court opinion in Weyerhaeuser v U.S. Fish & Wildlife Service, which involved a landowner challenge to FWS's decision to designate an area of land as "critical habitat" under the Endangered Species Act notwithstanding the area could support the species in question only after significant habitat restoration. The ESA allows unoccupied areas to be designated as critical habitat, but is silent on the question of unoccupiable but restorable habitat. Rather than reach that question, the Court ruled that it must first be determined than an area is a species' "habitat" before it can be designated as critical habitat, a finding that neither the FWS nor the lower courts made. Yet, neither the statute, FWS regulations and policies, nor case law define "habitat" for purposes of the ESA. The essay closes with suggestions for doing so.

Keywords: Endangered Species Act, critical habitat, habitat, Weyerhaeuser

Suggested Citation

Ruhl, J. B., What Is Habitat? (August 17, 2019). Natural Resources & Environment Volume 34, Number 1, Summer 2019. Available at SSRN: https://ssrn.com/abstract=3471285

J. B. Ruhl (Contact Author)

Vanderbilt University - Law School ( email )

131 21st Avenue South
Nashville, TN 37203-1181
United States

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