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Let’s Talk “Habitat”: Competing ESA Definitions Proposed to Provide Regulatory Clarity

Under the Endangered Species Act (ESA), there are a number of key terms that shape the scope of species protection. These key terms, usually defined in the Act itself or through agency regulation, include terms such as “take,” “critical habitat,” and “harm or harass.” However, one fundamental term—“habitat”—has remained undefined. In response to the 2018 U.S. Supreme Court’s Weyerhaeuser decision, which highlighted this gap, it now appears that might change. On August 5, 2020, the U.S. Fish and Wildlife Service and National Marine Fisheries Service (together, the Services) proposed a new regulation to shed light on the meaning of the term. Comments on the proposal are due September 4, 2020.

In Weyerhaeuser, the Supreme Court considered the propriety of the critical habitat designation for the dusky gopher frog and held that it is necessary to consider the meaning of “habitat” under the ESA before determining whether the designation of an area as “critical habitat” is appropriate. The rationale was simple: the Services must first have a clear understanding of a species’ habitat before designating any portion of it as critical to the species’ conservation. But the Court lamented that there is no definition of “habitat” in the ESA or its implementing regulations to guide that analysis. The Services’ proposed new rule aims to fix that.

Noting that species’ habitats include the food, water, cover, or space that individuals of a species depend upon to carry out one or more of their life processes, the Services explain that the definition ultimately must be broad enough to account for all such habitat attributes for the diverse array of species that the ESA covers. To combat the uncertainty surrounding the term, the Services are proposing two potential definitions for public consideration. The primary proposal would define “habitat” as “physical places that individuals of a species depend upon to carry out one or more life processes” and further clarify that habitat “includes areas with existing attributes that have the capacity to support individuals of the species” (emphasis added). The alternative proposal would define “habitat” as “the physical places that individuals of a species use to carry out one or more life processes” (emphasis added) and recognize that habitat “includes areas where individuals of the species do not presently exist but have the capacity to support such individuals, only where the necessary attributes to support the species presently exist.”

Both proposed definitions contemplate that “habitat” for a species can include not only areas that are currently occupied by the species but also certain areas that are not occupied. The alternate definition is narrower in that it would exclude areas lacking the present capacity to support the species. The proposed rule also clarifies that it would be prospective only and would not trigger revisions to prior designated critical habitat.

The Services explained that the competing proposals aim to stimulate conversation and promote transparency in the process. Mission accomplished. As with every issue under the ESA, there has been no shortage of stakeholder opinions. Environmental groups, for example, immediately labeled both proposals insufficient, arguing that they do not account for climate change impacts on species habitats. Several industry groups naturally disagree and have already endorsed the narrower alternative definition. The Services are sure to have plenty of feedback from the conversation it started and will likely face litigation regardless of where it lands on a final rule.

© 2020 Beveridge & Diamond PC National Law Review, Volume X, Number 219
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James M. Auslander Natural Resources & Project Development Attorney Beveridge & Diamond Washington, DC
Principal

James (Jamie) M. Auslander's legal practice focuses on project development, natural resources, and administrative law and litigation.

Mr. Auslander co-chairs Beveridge & Diamond’s Natural Resources and Project Development Practice Group, including its Energy Practice. He focuses on complex legal issues surrounding the development of oil and gas, hard rock minerals, renewable energy, and other natural resources on public lands onshore and on the Outer Continental Shelf. He frequently litigates appeals before federal courts and administrative bodies regarding rulemakings, permits...

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W. Parker Moore Environmental Attorney Beveridge & Diamond Washington, DC
Principal

Parker guides complex projects to successful completion.

His environmental law practice is an outgrowth of his love for the natural world. He co-chairs Beveridge & Diamond’s Natural Resources and Project Development Practice Group and its NEPA, Wetlands, and Endangered Species Act groups.

Parker dedicates his practice to successful project development, advising clients nationwide on activities implicating NEPA, wetlands regulation, and federal and state species protection laws, including the Endangered Species Act, Migratory Bird Treaty Act, Bald and...

202-789-6028
Jessica H. Maloney Litigation Attorney Beveridge & Diamond New York, NY
Associate

As a scientist and lawyer, Jessica uses her dual training to effectively represent clients in complex civil litigation.

Jessica defends clients in toxic tort, nuisance, and product liability litigation, including class and mass actions. She handles litigation relating to site remediation and groundwater contamination, and she counsels clients on projects implicating federal species protection law. She also co-leads the Toxic Torts and Mass Torts section of the firm’s Litigation practice group. 

Prior to law school, Jessica traveled to Panama, Vietnam, China, and the Pacific...

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