United States Department of Agriculture—Agricultural Research Service Southeast Watershed Research Laboratory Tifton, Georgia 31793, USA
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Richard Lowrance & Lee S. Altier
Stroud Water Research Center Avondale, Pennsylvania 19311, USA
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J. Denis Newbold
United States Department of Agriculture—Agricultural Research Service Northeast Watershed and Pasture Research Laboratory University Park, Pennsylvania 16802, USA
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Ronald R. Schnabel
Institute for Ecosystem Studies Millbrook, New York 12545, USA
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Peter M. Groffman
United States Geological Survey Dover, Delaware 19901, USA
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Judith M. Denver
Smithsonian Environmental Research Center Edgewater, Maryland 21037-0028, USA
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David L. Correll
Department of Soil Science North Carolina State University Raleigh, North Carolina 27695, USA
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J. Wendell Gilliam
USDA-Natural Resources Conservation Service Ft. Worth, Texas 76115, USA
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James L. Robinson
Wye Research and Education Center University of Maryland Queenstown, Maryland 21658, USA
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Russell B. Brinsfield & Kenneth W. Staver
Integrated Land Management Malvern, Pennsylvania 19355, USA
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William Lucas
USDA-Forest Service, Chesapeake Bay Program Annapolis, Maryland 21403, USA
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Albert H. Todd