last updated 1/1/04

Dr. John P. Giesy is Distinguished Professor of Zoology at Michigan State University in East Lansing,Michigan, where he is also a Professor of Veterinary Medicine and on the faculties of the Center for Integrative Toxicology and a member of the National Food Safety and Toxicology Center. Prof. Giesy is a world leading ecotoxicologist with interests in many aspects of ecotoxicology, including both the fates and effects of potentially toxic compounds and elements, particularly in the area of ecological risk assessment. He has conducted research into the movement, bioaccumulation and effects of toxic substances at different levels of biological organization, ranging from biochemical to ecosystem. Prof. Giesy has done extensive research in the areas of metal speciation, multi-species toxicity testing, biochemical indicators of stress in aquatic organisms, fate and effects of PAHs, halogenated hydrocarbons, including chlorinated dibenzo-dioxins and -furans, PCBs and pesticides. Prof. Giesy discovered the phenomenon of photo enhanced toxicity of organic compounds, such as PAHs. His studies include both laboratory and field as well as mesocosm studies and apply tools from molecular biology to ecosystem-level. He was the first to discover perfluorinated compounds in the environment, an important new class of environmental contaminants.


Currently, Prof. Giesy and his research group are actively studying the toxicity and reproductive effects of organic compounds, with special emphasis on herbicides, chlorinated dioxins and perfluorinated compounds. Studies are being conducted in the field and laboratory on frogs, fish, fish eating birds and mammals in the
Great Lakes region, including mink and raptors such as hawks and eagles and in marine mammals. Prof. Giesy is an expert in ecological risk assessments of both industrial and agricultural chemicals. Prof. Giesy has been active in the development and application of methods for the assessment of the toxicity of contaminated sediments, especially in the North American Great Lakes.