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Full-Text Articles in Law
Uncertainty In Population Estimates For Endangered Animals And Improving The Recovery Process, Dale D. Goble
Uncertainty In Population Estimates For Endangered Animals And Improving The Recovery Process, Dale D. Goble
Articles
United States recovery plans contain biological information for a species listed under the Endangered Species Act and specify recovery criteria to provide basis for species recovery. The objective of our study was to evaluate whether recovery plans provide uncertainty (e.g., variance) with estimates of population size. We reviewed all finalized recovery plans for listed terrestrial vertebrate species to record the following data: (1) if a current population size was given, (2) if a measure of uncertainty or variance was associated with current estimates of population size and (3) if population size was stipulated for recovery. We found that 59% of …
New Priorities As The Endangered Species Act Turns 40, Dale Goble
New Priorities As The Endangered Species Act Turns 40, Dale Goble
Articles
No abstract provided.
Conservation Reliant-Species, Dale Goble
Conservation Reliant-Species, Dale Goble
Articles
A species is conservation reliant when the threats that it faces cannot be eliminated, but only managed. There are two forms of conservation reliance: population- and threat-management reliance. We provide an overview of the concept and introduce a series of articles that examine it in the context of a range of taxa, threats, and habitats. If sufficient assurances can be provided that successful population and threat management will continue, conservation-reliant species may be either delisted or kept off the endangered species list. This may be advantageous because unlisted species provide more opportunities for a broader spectrum of federal, state, tribal, …
Conservation-Reliant Species And The Future Of Conservation, Dale Goble
Conservation-Reliant Species And The Future Of Conservation, Dale Goble
Articles
Species threatened with extinction are the focus of mounting conservation concerns throughout the world. Thirty-seven years after passage of the U.S. Endangered Species Act in 1973, we conclude that the Act’s underlying assumption—that once the recovery goals for a species are met it will no longer require continuing management—is false. Even when management actions succeed in achieving biological recovery goals, maintenance of viable populations of many species will require continuing, species-specific intervention. Such species are “conservation reliant.” To assess the scope of this problem, we reviewed all recovery plans for species listed as endangered or threatened under the Act. Our …
Recovery Of Imperiled Species Under The Endangered Species Act: The Need For A New Approach, Dale Goble
Recovery Of Imperiled Species Under The Endangered Species Act: The Need For A New Approach, Dale Goble
Articles
The recovery (delisting) of a threatened or endangered species is often accompanied by the expectation that conservation management of the species will no longer be necessary. However, the magnitude and pace of human impacts on the environment make it unlikely that substantial progress will be made in delisting many species unless the definition of “recovery” includes some form of active management. Preventing delisted species from again being at risk of extinction may require continuing, species-specific management actions. We characterize such species as “conservation-reliant”, and suggest that viewing “recovery” as a continuum of states rather than as a simple “recovered/not recovered” …