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Center for Biological Diversity v. Bernhardt

A district court dismissed a challenge to FWS' development of guidelines implementing its species status assessments (SSA) program under the ESA. An environmental group argued that the Service failed to provide public notice and an opportunity for comment on the guidelines, thus depriving the group ...

Public Employees for Environmental Responsibility v. Bernhardt

A district court dismissed for lack of standing a challenge to FWS' decision to delist the threatened Louisiana black bear under the ESA. Individuals and nonprofit groups challenged the Service's conclusions in its decision that the bear was recovered and no longer met the definition of a threatened...

Center for Biological Diversity v. United States Fish and Wildlife Service

A district court held that FWS must reconsider its approval of a proposed open-pit copper mine in the Coronado National Forest. An environmental group argued the agency improperly used a heightened standard of review when it determined the mine was unlikely to result in destruction or adverse modifi...

Center for Biological Diversity v. Everson

A district court held that FWS' decision to list the northern long-eared bat as threatened rather than endangered under the ESA was arbitrary and capricious. Environmental groups argued that the rationale FWS relied on to reach its decision—that the species had not yet suffered declines and appear...

"Significant Portion of Its Range": Statutory Interpretation of the ESA

The Endangered Species Act defines an endangered species as one at risk of extinction “throughout all or a significant portion of its range.” The U.S. Department of the Interior (DOI) has repeatedly defined “significant portion” to mean an area of the range essential to species persistence. This definition is redundant, and various iterations of the definition have been struck down in the past. At the same time, other proposals to list a species only in a portion of its range fail to satisfy the statutory requirements.