1. Department of Biology, Duke University, Durham, NC 27708
2. US Geological Survey (contractor), Water Mission Area, Reston, VA 20192
3. US Geological Survey, Water Mission Area, Reston, VA 20192
4. Department of Natural Resources and the Environment, University of Connecticut, Storrs, CT 06232
5. Flathead Lake Biological Station, University of Montana, Polson, MT 59860
6. Department of Plant Biology and Ecology, University of the Basque Country, Bilbao 48080, Spain
7. Natural Resources and Environmental Science Department, University of Nevada, Reno, NV 89557
8. School of Forest, Fisheries and Geomatics Sciences, University of Florida, Gainesville, FL 32611
9. Nicholas School of the Environment, Duke University, Durham, NC 27708
10. The Center for Environmental Sciences and Engineering, University of Connecticut, Storrs, CT 06232
11. Department of Forestry & Natural Resources, Purdue University, West Lafayette, IN 47906
12. Department of Natural Resources and the Environment, University of New Hampshire, Durham, NH 03824
13. Center for Limnology, University of Wisconsin, Madison, WI 53706
14. US Geological Survey, Southwest Biological Science Center, Flagstaff, AZ 86001
15. School of Life Sciences, Arizona State University, Tempe, AZ 85287