methylmercury in fish from owyhee reservoir in southeast oregon: scientific uncertainty and fish collected during 1987-1994 showed elevated levels of mercury (hg) in fish tissue from the owyhee reservoir in southeastern oregon. sixty-five percent of the samples analyzed had total hg levels exceeding the us environmental protection agency's (epa) health screening value of 0.6 mg/kg. eighteen out of 89 (20%) fish tissue samples also had total hg levels greater than the us food and drug administration's (fda) mercury action level of 1.0 mg/kg. the overall mean hg content for all fish coll ...19979335158
environmental contaminants and biomarker responses in fish from the columbia river and its tributaries: spatial and temporal were collected from 16 sites on rivers in the columbia river basin (crb) from september 1997 to april 1998 to document temporal and spatial trends in the concentrations of accumulative contaminants and to assess contaminant effects on the fish. sites were located on the mainstem of the columbia river and on the snake, willamette, yakima, salmon, and flathead rivers. common carp (cyprinus carpio), black bass (micropterus sp.), and largescale sucker (catostomus macrocheilus) were the targeted ...200616406490
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