Testing Decision Rules for Categorizing Species’ Extinction Risk to Help Develop Quantitative Listing Criteria for the U.S. Endangered Species Act

2013 ◽  
Vol 27 (4) ◽  
pp. 821-831 ◽  
Author(s):  
TRACEY J. REGAN ◽  
BARBARA L. TAYLOR ◽  
GRANT G. THOMPSON ◽  
JEAN FITTS COCHRANE ◽  
KATHERINE RALLS ◽  
...  
Keyword(s):  
Endangered Species ◽  
Extinction Risk ◽  
Decision Rules ◽  
Endangered Species Act ◽  
Species Extinction ◽  
The U.S

scholarly journals Extinction and the U.S. Endangered Species Act

2019 ◽  
Author(s):  
Noah Greenwald ◽  
Kieran F Suckling ◽  
Brett Hartl ◽  
Loyal Mehrhoff
Keyword(s):  
United States ◽  
Endangered Species ◽  
Endangered Species Act ◽  
The United States ◽  
Species Extinction ◽  
Number Of Species ◽  
The U.S ◽  
Species Extinctions

The United States Endangered Species Act is one of the strongest laws of any nation for preventing species extinction, but quantifying the Act’s effectiveness has proven difficult. To provide one measure of effectiveness, we identified listed species that have gone extinct and used previously developed methods to update an estimate of the number of species extinctions prevented by the Act. To date, only four species have been confirmed extinct with another 22 possibly extinct following protection. Another 71 listed species are extinct or possibly extinct, but were last seen before protections were enacted, meaning the Act’s protections never had the opportunity to save these species. In contrast, a total of 39 species have been fully recovered, including 23 in the last 10 years. We estimate the Endangered Species Act has prevented the extinction of roughly 291 species since passage in 1973, and has to date saved more than 99 percent of species under its protection.

scholarly journals Marine mammals and sea turtles listed under the U.S. Endangered Species Act are recovering

2018 ◽  
Author(s):  
Abel Valdivia ◽  
Shaye Wolf ◽  
Kieran Suckling
Keyword(s):  
Endangered Species ◽  
Marine Mammals ◽  
Population Change ◽  
Extinction Risk ◽  
Sea Turtles ◽  
Environmental Law ◽  
Endangered Species Act ◽  
Marine Species ◽  
Effective Manner ◽  
The U.S

AbstractThe U.S. Endangered Species Act (ESA) is the world’s strongest environmental law protecting imperiled plants and animals, and a growing number of marine species have been protected under this law as extinction risk in the oceans has increased. Marine mammals and sea turtles comprise 36% of the 161 ESA-listed marine species, yet analyses of recovery trends after listing are lacking. Here we gather the best available annual population estimates for all marine mammals (n=33) and sea turtles (n=29) listed under the ESA as species. Of these, we quantitatively analyze population trends, magnitude of population change, and recovery status for representative populations of 23 marine mammals and 9 sea turtles, which were listed for more than five years, occur in U.S. waters, and have data of sufficient quality and span of time for trend analyses. Using generalized linear and non-linear models, we found that 78% of marine mammals (n=18) and 78% of sea turtles (n=7) significantly increased after listing; 13% of marine mammals (n=3) and 22% of sea turtles (n=2) showed non-significant changes; while 9% of marine mammals (n=2), but no sea turtles declined after ESA protection. Overall, species with populations that increased in abundance were listed for 20 years or more (e.g., large whales, manatees, and sea turtles). Conservation measures triggered by ESA listing such as ending exploitation, tailored species management, and fishery regulations, among others, appear to have been largely successful in promoting species recovery, leading to the delisting of some species and to increases in most. These findings underscore the capacity of marine mammals and sea turtles to recover from substantial population declines when conservation actions under the ESA are implemented in a timely and effective manner.

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

2016 ◽  
Vol 10 (3) ◽  
pp. 328-336 ◽  
Author(s):  
Charlotte Boyd ◽  
Douglas P. DeMaster ◽  
Robin S. Waples ◽  
Eric J. Ward ◽  
Barbara L. Taylor
Keyword(s):  
Risk Assessment ◽  
Endangered Species ◽  
Extinction Risk ◽  
Endangered Species Act ◽  
Extinction Risk Assessment ◽  
The U.S

scholarly journals Extinction and the U.S. Endangered Species Act

PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e6803 ◽  
Author(s):  
Noah Greenwald ◽  
Kieran F. Suckling ◽  
Brett Hartl ◽  
Loyal A. Mehrhoff
Keyword(s):  
Endangered Species ◽  
Endangered Species Act ◽  
Species Extinction ◽  
Number Of Species ◽  
The U.S ◽  
Species Extinctions

The U.S. Endangered Species Act is one of the strongest laws of any nation for preventing species extinction, but quantifying the Act’s effectiveness has proven difficult. To provide one measure of effectiveness, we identified listed species that have gone extinct and used previously developed methods to update an estimate of the number of species extinctions prevented by the Act. To date, only four species have been confirmed extinct with another 22 possibly extinct following protection. Another 71 listed species are extinct or possibly extinct, but were last seen before protections were enacted, meaning the Act’s protections never had the opportunity to save these species. In contrast, a total of 39 species have been fully recovered, including 23 in the last 10 years. We estimate the Endangered Species Act has prevented the extinction of roughly 291 species since passage in 1973, and has to date saved more than 99% of species under its protection.

scholarly journals Extinction and the U.S. Endangered Species Act

2019 ◽  
Author(s):  
Noah Greenwald ◽  
Kieran F Suckling ◽  
Brett Hartl ◽  
Loyal Mehrhoff
Keyword(s):  
United States ◽  
Endangered Species ◽  
Endangered Species Act ◽  
The United States ◽  
Species Extinction ◽  
Number Of Species ◽  
The U.S ◽  
Species Extinctions

The United States Endangered Species Act is one of the strongest laws of any nation for preventing species extinction, but quantifying the Act’s effectiveness has proven difficult. To provide one measure of effectiveness, we identified listed species that have gone extinct and used previously developed methods to update an estimate of the number of species extinctions prevented by the Act. To date, only five species have been confirmed extinct with another 22 possibly extinct following protection. Another 71 listed species are extinct or possibly extinct, but were last seen before protections were enacted, meaning the Act’s protections never had the opportunity to save these species. In contrast, a total of 39 species have been fully recovered, including 23 in the last 10 years. We estimate the Endangered Species Act has prevented the extinction of roughly 465 species since passage in 1973, and has to date saved more than 99 percent of species under its protection.

scholarly journals Extinction and the U.S. Endangered Species Act

2019 ◽  
Author(s):  
Noah Greenwald ◽  
Kieran F Suckling ◽  
Brett Hartl ◽  
Loyal Mehrhoff
Keyword(s):  
United States ◽  
Endangered Species ◽  
Endangered Species Act ◽  
The United States ◽  
Species Extinction ◽  
Number Of Species ◽  
The U.S ◽  
Species Extinctions

The United States Endangered Species Act is one of the strongest laws of any nation for preventing species extinction, but quantifying the Act’s effectiveness has proven difficult. To provide one measure of effectiveness, we identified listed species that have gone extinct and used previously developed methods to update an estimate of the number of species extinctions prevented by the Act. To date, only four species have been confirmed extinct with another 22 possibly extinct following protection. Another 71 listed species are extinct or possibly extinct, but were last seen before protections were enacted, meaning the Act’s protections never had the opportunity to save these species. In contrast, a total of 39 species have been fully recovered, including 23 in the last 10 years. We estimate the Endangered Species Act has prevented the extinction of roughly 291 species since passage in 1973, and has to date saved more than 99 percent of species under its protection.

Evaluation of Two Approaches to Defining Extinction Risk under the U.S. Endangered Species Act

Risk Analysis ◽  
2018 ◽  
Vol 38 (5) ◽  
pp. 1009-1035 ◽  
Author(s):  
Grant G. Thompson ◽  
Lynn A. Maguire ◽  
Tracey J. Regan
Keyword(s):  
Endangered Species ◽  
Extinction Risk ◽  
Endangered Species Act ◽  
The U.S

The Economics of the U.S. Endangered Species Act: A Review of Recent Developments

2018 ◽  
Vol 12 (1) ◽  
pp. 69-91 ◽  
Author(s):  
Christian Langpap ◽  
Joe Kerkvliet ◽  
Jason F. Shogren
Keyword(s):  
Endangered Species ◽  
Endangered Species Act ◽  
Recent Developments ◽  
The U.S
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