R/CBT-27

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Factors controlling the food chain accumulation and transfer of inorganic and methylmercury in Chesapeake Bay organisms.

Principal Investigator:

Robert P. Mason

Start/End Year:

1995 - 1997

Institution:

Chesapeake Biological Laboratory, University of Maryland Center for Environmental Science

Co-Principal Investigator:

David A. Wright, Chesapeake Biological Laboratory, University of Maryland Center for Environmental Science

Description:

To investigate the bioconcentration of Hg and methyl Hg in organisms representative of the Chesapeake Bay from both pelagic and benthic food chains. To ascertain relative assimilation efficiencies of inorganic and methyl Hg by algae (pelagic/benthic diatoms or dinoflagellates) and by zooplankton and zoobenthos. To elucidate water column variables and sediment chemistry controlling uptake by microorganisms and factors controlling assimilation by zooplankton/zoobenthos. To assess transfer of Hg and methyl Hg between primary consumers and fish.

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