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Pesticides are involved with population declines of amphibians in the California Sierra Nevadas

Scientific World Journal

By:
, ,
DOI: 10.1100/tsw.2001.36

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Abstract

Several species of frogs and toads are in serious decline in the Sierra Nevada Mountains of California. These species include the threatened red-legged frog ( Rana aurora ), foothill yellow-legged frog ( R. boylii ), mountain yellow-legged frog ( R. muscosa ), Cascades frog ( Rana cascadae ), western toad ( Bufo boreas ) and Yosemite toad ( B. canorus ). For many of these species current distributions are down to 10% of historical ranges. Several factors including introduced predators, habitat loss, and ultraviolet radiation have been suggested as causes of these declines. Another probable cause is air-borne pesticides from the Central Valley of California. The Central Valley, especially the San Joaquin Valley, is a major agricultural region where millions of pounds of active ingredient pesticides are applied each year (http://www.cdpr.ca.gov/dprdatabase.htm). Prevailing westerly winds from the Pacific Coast transport these pesticides into the into the Sierras.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Pesticides are involved with population declines of amphibians in the California Sierra Nevadas
Series title:
Scientific World Journal
DOI:
10.1100/tsw.2001.36
Volume
1
Year Published:
2001
Language:
English
Publisher:
Hindawi Publishing
Contributing office(s):
Patuxent Wildlife Research Center
Description:
200-201
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Scientific World Journal
First page:
200
Last page:
201
Number of Pages:
2