1. Department of Environmental Sciences, Rutgers, The State University of New Jersey, New Brunswick, NJ 08901, USA.
2. Department of Architecture and Environmental Design, Temple University, Ambler, PA 19002, USA.
3. Department of Environmental Sciences, University of California, Riverside, Riverside, CA 92521, USA.
4. Department of Geography and Atmospheric Science, University of Kansas, Lawrence, KS 66045, USA.
5. Division of Biology, Kansas State University, Manhattan, KS 66506, USA.
6. Department of Biology and Graduate Degree Program in Ecology, Colorado State University, Fort Collins, CO 80523, USA.