1. Intercollege Graduate Degree Program in Ecology Pennsylvania State University 105 Stuckeman Family Building, University Park PA 16802 U.S.A.
2. Department of Environmental Science and Technology University of Maryland 1443 Animal Sciences Building, College Park MD 20742 U.S.A.
3. Department of Landscape Architecture Pennsylvania State University 329 Stuckeman Family Building, University Park PA 16802 U.S.A.
4. Department of Ecosystem Science and Management Pennsylvania State University 206 Agricultural Sciences and Industries Building, University Park PA 16802 U.S.A.
5. Department of Plant Science Pennsylvania State University 241 Agricultural Sciences and Industries Building, University Park PA 16802 U.S.A.