The Endangered Species Act under Threat

Geography and recovery under the U.S. Endangered Species Act.

The U.S. Endangered Species Act (ESA) defines an endangered species as one "at risk of extinction throughout all or a significant portion of its range." The prevailing interpretation of this phrase, which focuses exclusively on the overall viability of listed species without regard to their geographic distribution, has led to development of listing and recovery criteria with fundamental concept...

Consistent Extinction Risk Assessment under the U.S. Endangered Species Act

1 Southwest Fisheries Science Center, National Marine Fisheries Service, 8901 La Jolla Shores Drive, La Jolla, CA 92037, USA 2 Scripps Institution of Oceanography, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA 3 Alaska Fisheries Science Center, National Marine Fisheries Service, 7600 Sand Point Way NE, Seattle, WA 98115, USA 4 Northwest Fisheries Science Center...

Economics of the Endangered Species Act

T he Endangered Species Act of 1973 addresses the market failure associated with the unpriced social benefits of such species. Robert Barnwell Roosevelt might have been envisioning such an act in his 1865 book Superior Fishing, where he wrote: ‘‘By these means can the seductive little beauties, whether of the feathered, furred, or scaly tribe . . . be preserved through endless time in undiminis...

Status Review Report of 82 Candidate Coral Species Petitioned Under the U.S. Endangered Species Act

Exorcising Ambiguity from the Endangered Species Act: Critical Habitat as an Example Implementing the Endangered Species

The Endangered Species Act of 1973 has challenged scientists perhaps more than any other legislation. In response, the scope of wildlife biology has been redefined and expanded, adaptive management has evolved into a population recovery technique, population viability analysis and other problem solving methods are being developed, and the very definition of a biological species is being reexami...