U.S. Geological Survey
Toxic Substances Hydrology Program--Proceedings of the Technical Meeting
Charleston South Carolina March 8-12, 1999--Volume 2 of 3--Contamination of Hydrologic Systems and Related Ecosystems, Water-Resources Investigations Report 99-4018B
Studies Relating Pesticide Concentrations to Potential Effects on
Aquatic Organisms in the San Francisco Bay-Estuary, California
By Kathryn M. Kuivila
This paper is available in pdf format:
 CA-0220.pdf
ABSTRACT
A variety of pesticides are applied in large quantities to
agricultural and urban areas in the Central Valley of California
and are transported into the San Francisco Bay-Estuary dissolved
in water and associated with suspended sediments. These pesticides
can have deleterious effects on aquatic organisms. Three studies
that relate pesticide concentrations to potential effects on
aquatic organisms are currently underway by the U.S. Geological
Survey's San Francisco Bay-Estuary Toxic Substances Hydrology
Project. These studies are (1) measuring the impacts of herbicides
on phytoplankton primary production, (2) determining the exposure of
Delta smelt to dissolved pesticides, and (3) assessing the effects
of pesticides on the Asian clam, Potamocorbula amurensis.
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