Ruth E. Sherman,^* Patrick H. Martin,^** Timothy J. Fahey,^*** Steve D. Degloria<sup>****


*</sup>Ruth Sherman is an ecosystems ecologist in the Department of Natural Resources, Cornell University. She has been a member of the research staff since 1998. Her general scientific interests are in vegetation-environment interactions in both temperate and tropical systems. Her address: Department of Natural Resources, Fernow Hall, Cornell University, Ithaca, NY 14853, USA. E-mail: res6@cornell.edu
^**Patrick Martin is an Assistant Professor. His research focuses on landscape ecology and the dynamics of vegetation communities, including quantifying controls on landscape vegetation patterns by integrating environmental gradients and disturbance regimes, and understanding the long-term effects of climate change and exotic species on native plant communities and ecosystem function. His address: Department of Horticulture and Landscape Architecture, 215 Shepardson Building, Colorado State University, Fort Collins, CO 80523, USA. E-mail: Patrick.Martin@colostate.edu
^***Timothy Fahey is a forest ecologist in the Department of Natural Resources, Cornell University. He has been a member of the Cornell faculty since 1982. His general scientific interest is in better understanding forest ecosystems, both tropical and temperate. His address: Department of Natural Resources, Fernow Hall, Cornell University, Ithaca, NY 14853, USA. E-mail: tjf5@cornell.edu
^****Steve DeGloria is a professor of Environmental Information Science in the Department of Crop and Soil Science, Cornell University. His areas of expertise are in resource inventory, mapping, and analysis; remote sensing; geographic information systems; environmental information science; and soil survey, interpretations, and conservation. His address: Department of Crop and Soil Science, Rice Hall, Cornell University, Ithaca, NY 14853, USA. E-mail: sdd4@cornell.edu