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Upper Midwest Environmental Sciences Center

Wildlife Toxicology

Study site locations: Illinois - Contaminant exposure of great blue herons on Upper Mississippi River

Concentrations of mercury and other contaminants in great blue heron eggs from 10 colonies along the upper Mississippi River were generally at background concentrations.  Geometric mean PCB concentrations were  3.04 ug/g wet wt. and mercury averaged 0.82 ug/g dry wt. 

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Custer, T. W., R. H. Hines, M. J. Melancon, D. J. Hoffman, J. W. Bickham, J. W. Martin and Diane Henshel.  1997.  Contaminant concentrations and biomarker response in great blue heron eggs from 10 colonies on the upper Mississippi River, USA. Environmental Toxicology and Chemistry 16:260-271.

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Page Last Modified: January 14, 2011