Stephen Polasky is the Fesler-Lampert Professor of Ecological/Environmental Economics at the University of Minnesota. He has served as a senior staff economist for the President’s Council of Economic Advisers and previously held faculty positions in agricultural and resource economics and economics at Oregon State University and Boston College, respectively. His research interests include biodiversity conservation and endangered species policy, integrating ecological and economic analysis, common property resources, and environmental regulation. Dr. Polasky previously served on the NRC Committee to Review the Florida Keys Carrying Capacity Study. He is currently a member of the EPA’s Science Advisory Board Environmental Economics Advisory Committee. He received a B.A. from Williams College and a Ph.D. in economics from the University of Michigan.

Catherine M. Pringle is a professor at the Institute of Ecology of the University of Georgia. Her research areas are aquatic ecology, tropical ecology, conservation biology, nutrient cycling, and effects of environmental problems on the ecology of aquatic ecosystems. Her main research sites are at La Selva Biological Station in Costa Rica, the Luquillo LTER site in Puerto Rico, and the Coweeta LTER site in North Carolina. She is past president of the North American Benthological Society and chair of the Ecological Society of America’s Sustainable Biosphere Initiative Advisory Committee. Dr. Pringle received her B.S. in botany and her Ph.D. in aquatic biology from the University of Michigan.

Kathleen Segerson is a professor and head of the Department of Economics at the University of Connecticut. Dr. Segerson previously held a faculty position in agricultural economics at the University of Wisconsin. Her fields of research include environmental and natural resource economics, the economic implications of environmental management techniques, and the use of economic incentives in resource policy. Dr. Segerson previously served on the NRC Committee on Causes and Management of Coastal Eutrophication and is currently a member of the EPA’s Science Advisory Board Environmental Economics Advisory Committee. She received a B.A. from Dartmouth College and a Ph.D. in agricultural economics from Cornell University.

Kristin Shrader-Frechette is the O’Neill Professor of Philosophy and concurrent professor of biological sciences at the University of Notre Dame. Dr. Shader-Frechette previously held professorships at the University of Florida and the University of California, St. Barbara. Her research focuses primarily on environmental ethics and policy, quantitative risk assessment, philosophy of science, and normative ethics. She was an associate editor of BioScience until 2002 and is currently editor-in-chief of the Oxford University Press monograph series on Environmental Ethics and Science Policy. She is past president of the Risk Assessment and Policy Association and the International Society for Environmental Ethics. She has served on the Board on Environmental Studies and Toxicology and several NRC committees. Dr. Shader-Frechette received a B.A. in mathematics from Edgecliff College of Xavier University and a Ph.D. in phi-



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