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and chaired the Department of the Interior's Karner Blue Butterfly Recovery Planning Team. Dr. Andow obtained his PhD in ecology from Cornell University in 1982.

Steven Bartell is a principal of the Cadmus Group, Inc., and manages its Oak Ridge, Tennessee, office. Dr. Bartell's primary research and technical interests include ecosystem science, ecological modeling, and ecological risk assessment. He has conducted ecological risk assessments for a variety of physical, chemical, and biologic stressors in aquatic and terrestrial ecosystems for public-sector and private-sector clients. Dr. Bartell has served two terms as a member of the Environmental Protection Agency Science Advisory Board (SAB) Ecological Processes and Effects Committee and is a member of the SAB executive subcommittee on the use of ecological models in supporting environmental regulations. He currently serves on the editorial boards of Risk Analysis, Human and Ecological Risk Assessment, and Chemosphere. He has written more than 100 technical publications concerning ecology, environmental sciences, and risk assessment, including the books Ecological Risk Estimation (Lewis Publishers, 1992) and the Risk Assessment and Management Handbook. Dr. Bartell also holds an adjunct faculty position in the Department of Ecology and Evolutionary Biology, University of Tennessee, Knoxville. Before joining the Cadmus Group, he was vice president and director of SENES Oak Ridge, Inc. From 1980 to 1992, he was a senior staff scientist in the Environmental Sciences Division, Oak Ridge National Laboratory.

Max Carter is a farmer in Coffee County, in Georgia's coastal plain region. In 1976, he changed from conventional to no-till farming of corn, soybeans, peanuts, and cotton. National Resources Conservation Service and extension agents began taking visitors to his farm to demonstrate the advantages of no-till agriculture. He serves as treasurer and board member of Georgia Conservation Tillage Alliance, an organization that was founded to promote conservation in farming. He has been president and is now chairman of the board for the Coffee County Conservation Tillage Alliance.

Phil Dale is head of the Genetic Modification and Biosafety Research Group at the John Innes Centre, Norwich, UK. Dr. Dale worked in agriculture for several years before graduating in agricultural botany and obtaining a doctorate in plant genetics. After a period of plant-breeding and genetics research at the Welsh Plant Breeding Station (1972-1985), he became research group leader at the Plant Breeding Institute, Cambridge (1985-1990). Here he was involved in the first field experiments with genetically modified (GM) crops in the UK (1987 onward) and led several



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