A comparison of selenium and mercury concentrations in transplanted and resident bivalves from North San Francisco Bay

Many of the methodologies for effective use of organisms to monitor and study contamination in estuaries are well established (Phillips, 1980; Phillips and Rainbow, 1993). Understanding the processes that determine bioaccumulation and determining concentrations of contaminants in biological tissues are best employed in conjunction with analysis of other environmental media (e.g., water, suspended particulate material, or sediment). Together these provide complementary lines of field evidence indicative of complexities that affect the exposures of organisms to contaminants.