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Understanding Biological Impacts of Metals in Coastal and Urban Waters of the Great Lakes: Ligand-Interactions, Novel Biochemical Endpoints, and Model Development

The objective of this project is to measure and model the bioconcentration of methylmercury and the toxicity of copper and cadmium to phytoplankton in coastal regions of the upper Great Lakes. Field studies will be selected to provide key geochemical parameters and a range of both urban and rural influences on the phytoplankter Chlamydomonas reinhardtii. Comparisons between observed and predicted bioconcentration or toxicity will be used to test the adequacy of the predicted biotic ligand models and to identify possible modifications needed to achieve targeted accuracy in the predicted values. The results will ultimately provide the tools needed to assess the sensitivity of coastal regions to metal toxicity and methylmercury bioaccumulation.

Investigator(s):
David Armstrong
Amy Prasch
Martin Shafer

 


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