Strength in Numbers: Setting Quantitative Criteria for Listing Species under the Endangered Species Act

Testing decision rules for categorizing species' extinction risk to help develop quantitative listing criteria for the U.S. Endangered Species Act.

Lack of guidance for interpreting the definitions of endangered and threatened in the U.S. Endangered Species Act (ESA) has resulted in case-by-case decision making leaving the process vulnerable to being considered arbitrary or capricious. Adopting quantitative decision rules would remedy this but requires the agency to specify the relative urgency concerning extinction events over time, cutof...

Species listing under Canada's Species at Risk Act.

In a preliminary analysis of listing decisions under Canada's Species at Risk Act (SARA), Mooers et al. (2007)demonstrated an apparent bias against marine and northern species. As a follow-up, we expanded the set of potential explanatory variables, including information on jurisdictional and administrative elements of the listing process, and considered an additional 16 species recommended for ...

Taxonomic considerations in listing subspecies under the U.S. Endangered Species Act.

The U.S. Endangered Species Act (ESA) allows listing of subspecies and other groupings below the rank of species. This provides the U.S. Fish and Wildlife Service and the National Marine Fisheries Service with a means to target the most critical unit in need of conservation. Although roughly one-quarter of listed taxa are subspecies, these management agencies are hindered by uncertainties about...

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

Biases in legal listing under Canadian endangered species legislation.

Citation: Mooers, A. L.R. Prugh, M. Festa-Bianchet, and J.A. Hutchings 2007 [Internet] Biases in Legal Listing under Canadian Endangered Species Legislation. Conservation Biology Volume 21, No. 3, 572–575 Summary/ Abstract: In many countries wild species can be granted legal protection when they are deemed at risk of extinction or extirpation. Protection is the first step in a process of recove...