I am currently a Research Scientist Emeritus with the U.S. Geological Survey (USGS). I began working with USGS as an aquatic ecologist in 1991 and retired as a research ecologist in May 2020. As a Scientist Emeritus, I continue my work on selected projects in a volunteer capacity. My major research focus has been on mercury cycling and bioaccumulation in aquatic ecosystems, especially streams and rivers. I have also investigated the effects of urbanization, forest fragmentation, and hydrologic alteration on stream ecosystems. Much of my work has involved the integration of biological aspects (e.g. food web dynamics, community ecology) into multi-disciplinary studies. I have a Ph.D. in environmental biology from the State University of New York College of Environmental Science and Forestry in Syracuse, and a B.A. in environmental studies from Northland College in Ashland, Wisconsin. In addition to my volunteer work with USGS, I volunteer as the Water Quality Monitoring Coordinator for the Lake Onota Preservation Association (LOPA), and am a member of LOPA's Board of Directors.
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