Biases in legal listing under Canadian endangered species legislation.

The Hidden Rise of Efficient (De)Listing

What is the value of the gray wolf and what might be the costs of including a tiny desert lizard on the list of endangered species? For decades, Congress has formally excluded questions about the economic value of species and the costs of their protection from agency decisions about whether a species should be listed under the Endangered Species Act. Recently, however, a number of federal legis...

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...

A derivative approach to endangered species conservation

www.frontiersinecology.org © The Ecological Society of America T US Endangered Species Act (ESA) is arguably one of the most important pieces of environmental legislation in US history. It has been a success, since at least half of the listed species have benefited (Male and Bean 2005). However, implementation of the ESA has involved inefficiencies, including an exclusive focus on species that ...

The Effectiveness of Listing under the U.S. Endangered Species Act An econometric analysis using matching methods

Trends in Extinction Risk for Imperiled Species in Canada

Protecting and promoting recovery of species at risk of extinction is a critical component of biodiversity conservation. In Canada, the Committee on the Status of Endangered Wildlife in Canada (COSEWIC) determines whether species are at risk of extinction or extirpation, and has conducted these assessments since 1977. We examined trends in COSEWIC assessments to identify whether at-risk species...