Pesticides are involved with population declines of amphibians in the California Sierra Nevadas
Scientific World Journal
By: D. W. Sparling, G. Fellers, and L. McConnell
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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.
| 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 |
| Google Analytic Metrics | Metrics page |