He has recent experience aboard the Lake Guardian in physical and chemical limnology as a post-doctoral researcher as part of the USEPA Lake Erie Trophic Dynamics Study in 2002. There his research focused on the interactions of physical water movements, invasive species (the zebra mussel) and eutrophication on the Lake Erie “Dead Zone” (hypolimnetic anoxia). Dr. Edwards’ areas of specialization include physical limnology, plankton ecology, invasive species, and toxicology. His current research interests include the Lake Erie hypoxia problem, zebra mussel excretion and links to eutrophication, and bioaccumulation of toxics in Lake Ontario food webs.