1. The Ecosystems Center Marine Biological Laboratory Woods Hole Massachusetts USA
2. Harvard Forest Harvard University Petersham Massachusetts USA
3. Institute of Arctic Biology University of Alaska Fairbanks Fairbanks Alaska USA
4. Division of Biology Kansas State University Manhattan Kansas USA
5. Department of Biological Sciences Saint Edward's University Austin Texas USA
6. U.S. Geological Survey Forest and Rangeland Ecosystem Science Center Corvallis Oregon USA
7. Ecology and Evolutionary Biology Institute for Environment and Society, Brown University Providence Rhode Island USA
8. School of the Environment Washington State University Richland Washington USA
9. W.K. Kellogg Biological Station Michigan State University Hickory Corners Michigan USA
10. Department of Biology and Wildlife Institute of Arctic Biology, University of Alaska Fairbanks Fairbanks Alaska USA
11. Climate and Global Dynamics Laboratory National Center for Atmospheric Research Boulder Colorado USA
12. Institute of Arctic and Alpine Research University of Colorado Boulder Boulder Colorado USA
13. Department of Ecosystem Science and Management University of Wyoming Laramie Wyoming USA
14. Department of Sustainable Resources Management SUNY College of Environmental Science and Forestry Syracuse New York USA