Positions and Activities

Professional Positions

• Francis Boyer Chair of Limnology, The Academy of Natural Sciences of Philadelphia, 1973 - Present.
• Honorary Chairman, Board of Trustees of The Academy of Natural Sciences of Philadelphia, 1976 - Present.
• Chairman, Board of Trustees of The Academy of Natural Sciences of Philadelphia, 1973 - 1976.
• Curator of Limnology Department, The Academy of Natural Sciences, 1947 - Present.
• Chairman, Limnology Department, The Academy of Natural Sciences, 1947 - 1973. (established department)
• Adjunct Professor, University of Pennsylvania, 1970 - Present.
• Lecturer in Botany, University of Pennsylvania, 1950 - 1970.
• Mellon Lecturer in Aquatic Biology, Yale University, Fall 1980.
• Guest Fellow of Saybrook, Yale University, 1975.
• Lecturer in Algae Course, Marine Biological Laboratory, Woods Hole, Massachusetts, 1951 - 1955.
• Curator, Leidy Microscopical Society, The Academy of Natural Sciences, 1937 - 1947.
• Associate Curator, Microscopy Department, The Academy of Natural Sciences, 1939 - 1947.
• Phycology Researcher, The Academy of Natural Sciences, 1933 - 1937.

Other Positions Connected with Scientific Work

• Limnological expedition to Mexico in 1947, sponsored by American Philosophical Society.
• Leader of the expedition to Peru and Brazil in 1955, sponsored by the Catherwood Foundation.
• President of the Phycological Society of America, 1954.
• Chairman of the Algae Committee of Smithsonian Oceanographic Sorting Center, U.S. National Museum, 1963 - 1968.
• Delegate to the General Assembly of International Union of Biological Sciences in Bergen, Norway, 1973.
• President of American Society of Naturalists, 1975.
• Trustee biol. abstracts, American Naturalist, 1974-76.

Committees

• Member of President Johnson's Science Advisory Committee, Panel on Water Blooms, 1966.
• Member of Governor Scranton's Science Advisory Committee, Panel on Pollution Control and Water Resources, 1966.
• Chairman of Panel of the Committee on Pollution of the National Academy of Sciences, Washington, D.C., 1966.
• Member of Department of Interior's National Technical Advisory Committee on Water Quality Requirements for Fish, Other Aquatic Life, and Wildlife, 1967 - 1968.
• Member of Governor Shafer's Science Advisory Committee, 1967 - 1968.
• Member of Citizens' Advisory Council of Pennsylvania Department of Environmental Resources, 1971 - 1973.
• Member of Hazardous Materials Advisory Committee of Environmental Protection Agency, 1971 - 1974.
• Member of Governor Shapp's Science Advisory Council, 1972 - 1978.
• Member of Advisory Council, Electric Power Research Institute, 1973 - 1977.
• Member of Advisory Committee for Research, National Science Foundation, 1973 - 1974.
• Member of Committee on Environmental Alterations of the American Association for the Advancement of Science, 1973 - 1974.
• Member of Committee on Science and Public Policy of the National Academy of Sciences, 1973 - 1977.
• Member of Environmental Measurements Panel of the Committee on Remote Sensing Programs for Earth Resource Surveys, National Academy of Sciences, 1973 - 1974.
• Member of Nominating Committee for 1973 - 1974 and 1974 - 1975 of the National Academy of Sciences.
• Member of National Academy of Engineering's Committee on Environmental Engineering's Ad Hoc Study on Explicity Criteria for Decisions in Power Plant Siting, 1973.
• Member of Advisory Council, Renewable Natural Resources Foundation, 1973-1976.
• Member of the Council, Smithsonian Institution, 1973 - Present.
• Member of the Energy Research and Development Advisory Council to President's Energy Policy Office, 1973 - 1974.
• Member of Philadelphia Advisory Council, 1973 - 1976.
• Member editorial board, Science, 1974 - 1976.
• Member of Executive Advisory Committee of Federal Power Commission, National Power Survey, 1972 - 1975.
• Member of Executive Advisory Committee of Environmental Protection Agency, 1974 - 1979.
• Chairman, Panel on Ecology of Executive Advisory Committee, Environmental Protection Agency, 1974 - 1976.
• Member of Committee on Human Resources, National Research Council, 1975 - 1976.
• Member of Advisory Council for Department of Biology, Princeton University, 1975 - Present.
• Member of General Advisory Committee, U.S. Energy Research and Development Administration, 1975 - 1977.
• Member of Committee on Science and the Arts of the Franklin Institute, 1978 - Present.
• Member of University Council Committee for the Yale School of Forestry and Environmental Studies, 1978 - Present.
• Member of Science Advisory Council of World Wildlife Fund - U.S., 1978 - 1986.
• Member of Visiting Committee for Department of Energy and Environment of Brookhaven National Laboratory of Associated Universities, Inc., 1979 - Present.
• Member of Air & Water quality Technical Advisory Committee of Pennsylvania's Department of Environmental Resources, 1979 - Present.
• Member of National Academy of Sciences' Subcommittee on the Geochemical Environment in Relation to Health and Disease of the U.S. National Committee for Geochemistry, 1979 - 1985.
• Chairman of National Academy of Sciences' Section on Population Biology, Evolution, and Ecology, 1980 - 1986.
• Member of Board for the World Resources Institute, 1980 - Present.
• Member of Board for the Environmental and Energy Study Institute, 1984 - Present.
• Member of Energy Research Advisory Board, Secretary of Energy, 1982 - Present.
• Member of National Council World Wildlife Fund, 1986 - Present.
• Member of President Reagan's Advisory Commission on Acid Rain, 1982.

Other Activities

• Trustee of Henry Foundation, Gladwyne, PA.
• Trustee of Lacawac Sanctuary Foundation.
• Member of Board of Directors, Wissahickon Valley Watershed Association.
• Member of Advisory Council, French and Pickering Creeks Conservation Trust.
• Member of Board of Directors, Greater Philadelphia Partnership.
• Member of Board of Trustees, Saint Augustine's College, Raleigh, NC
• Member of Board of Trustees, Midwest Research Institute, Kansas City, MO
• Member of Board of Trustees, The Institute of Ecology.
• Member of Board of Directors, World Wildlife Foundation, 1980.
• Member of President Reagan's Peer Review Committee on Acid Rain.
• Member of Board of Governors, Nature Conservancy.
• Member of Board of Managers, Wistar Institute of Anatomy and Biology

Organization Memberships

• Botanical Society of America
• American Society of Plant Taxonomists
• Ecological Society of America
• American Society of Limnology and Oceanography
• Society for the Study of Evolution
• Society of Sigma Xi
• American Institute of Biological Sciences
• Phycological Society of America
• American Society of Naturalists
• International Phycological Society
• American Association for the Advancement of Science
• International Association for Plant Taxonomy
• International Association of Limnology
• National Academy of Sciences
• American Philosophical Society
• American Academy of Arts and Sciences
• Honorary Member of South Carolina Academy of Science
• Honorary Member of Water Pollution Control Federation

Environmental Research