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Main Title Distributions of airborne agricultural contaminants relative to amphibian populations in the southern Sierra Nevada, California : research plan /
Author Bradford, David F. ; Heithmar, E. M. ; Cross, C. L. ; Gentry, B. ; Momplaisir, G. M.
Other Authors
Author Title of a Work
Heithmar, Edward M.
Cross, Chad L.
Gentry, Beth.
Momplaisir, Georges-Marie.
Nash, Maliha S.
Tallent-Halsell, Nita.
Riddick, Lee.
Rosal, Charlita.
Varner, Katrina E.
CORP Author Environmental Protection Agency, Las Vegas, NV. National Exposure Research Lab.
Publisher U.S. Environmental Protection Agency, Office of Research and Development, National Exposure Research Laboratory, Environmental Sciences Division,
Year Published 2001
Report Number EPA 600-R-01-085; NERL-LV-01-065; NERL-LV-ESD-01-065; PB2002102156
Stock Number PB2002-102156
OCLC Number 48168683
Additional Subjects Air pollution effect ; Pesticides ; Contaminants ; Amphibians ; California ; Natural resources management ; Animal populations ; Sediments ; Ecosystems ; Toxic substances ; Sampling ; Lakes ; Airborne transport ; Sierra Nevada Mountains(CA)
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD ARCHIVE EPA 600-R-01-085 Headquarters Library/Washington,DC 04/16/2018
NTIS  PB2002-102156 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 71 pages : map ; 28 cm
The Sierra Nevada mountain range lies adjacent to one of the heaviest pesticide use areas in the USA, the Central Valley of California. Because of this proximity, concern has arisen that agricultural pesticides, in addition to other contaminants, are adversely affecting the natural resources of the Sierra Nevada. Transport and deposition of pesticides from the Central Valley to the Sierra Nevada has been documented, and several lines of evidence have implicated pesticide drift from the Central Valley as a causal factor in the dramatic population declines of four amphibian species in the Sierra Nevada. This study focuses on contaminants in lakes at high elevation in the southern Sierra, an area where population declines of one species, the mountain yellow-legged frog, have been dramatic. The southern Sierra is of particular interest because air pollution in the Central Valley and Sierra is generally greatest in the south, watersheds in the southern Sierra differ substantially in their proximity to the Central Valley, and the region includes large areas where the mountain yellow-legged frog has completely disappeared and other areas where large numbers remain.
"September 2001." "EPA 600-R-01-085." Cover title. Includes bibliographical references.