1. Geography Department; University of North Carolina at Chapel Hill; Chapel Hill North Carolina USA
2. Center for Watershed Protection; Ellicottville Maryland USA
3. Institute of Ecosystem Studies; Millbrook New York USA
4. Appalachian Laboratory; University of Maryland Center for Environmental Science; Frostburg Maryland USA
5. Curriculum in Ecology; University of North Carolina at Chapel Hill; Chapel Hill North Carolina USA
6. U.S. Geological Survey; Baltimore Maryland USA
7. Urban Forests, Human Health, and Environmental Quality; USDA Forest Service; Syracuse New York USA