Pamela Matson,^* Kathleen A. Lohse,^** Sharon J. Hall<sup>***


*</sup>Pamela Matson is the Richard and Rhoda Goldman Professor in the Department of Geological and Environmental Sciences and the Institute of International Studies, and the Victoria P. and Roger W. Sant Director of the Earth Systems Degree Program at Stanford University. She received a B.S. in biology from the University of Wisconsin in 1975, a M.S. in environmental science from Indiana University in 1980, and a Ph.D. in forest ecology from Oregon State University in 1983. Her research focuses on the effects of natural and anthropogenic disturbances on biogeochemical cycling and trace gas exchange in tropical and temperate ecosystems. She is currently a science advisory committee member for the International Geosphere-Biosphere Programme and serves on numerous other committees, and she serves as President of Ecological Society of America. Her address: Department of Geological and Environmental Sciences, Stanford University, Stanford, CA 94305, 650 725-6812, USA.Matson@stanford.edu
^**Kathleen A. Lohse is a graduate student at University of California, Berkeley, working with Dr. Pamela Matson. Her research focuses on evaluating the consequences of anthropogenic N additions on the patterns and regulation of soil solution losses from two Hawaiian wet tropical forests differing in nutrient status and soil age. Her research couples hydrological and ecological processes to understand and predict nitrate losses from these forests. Her address: Department of Environmental Science, Policy and Management, University of California, Berkeley, Berkeley, CA 94720, USA.klohse@nature.berkeley.edu
^***Sharon J. Hall is an assistant professor in environmental science at The Colorado College. Her research explores the consequences of human activity on the atmospheric and hydrologic exchange of materials between ecosystems. In her dissertation research, she examined the effects of anthropogenic nitrogen deposition on the cycling and losses of nutrients from tropical soils to the atmosphere. Currently, she is extending this work to agricultural and natural systems of SE Asia to examine how deforestation and agricultural intensification are altering nitrogen trace gas emissions from soils. Her address: Environmental Science Program, The Colorado College, 14 E. Cache La Poudre Street, Colorado Springs, CO 80903, USA.shall@coloradocollege.edu