1. Department of Earth and Planetary Sciences Johns Hopkins University Baltimore Maryland USA
2. Smithsonian Environmental Research Center Edgewater Maryland USA
3. Department of Biology University of North Carolina Greensboro Greensboro North Carolina USA
4. Department of Biology Eastern Michigan University Ypsilanti Michigan USA
5. Department of Ecology, Evolution, and Behavior University of Minnesota St. Paul Minnesota USA
6. Virginia Institute of Marine Science William & Mary Gloucester Point Virginia USA
7. Department of Ecosystem Science and Management University of Wyoming Laramie Wyoming USA
8. Environmental Science Center Qatar University Doha Qatar
9. Department of Environmental Science and Technology University of Maryland College Park Maryland USA
10. Department of Biogeography University of Bayreuth Bayreuth Germany
11. Ecological Sciences, The James Hutton Institute Aberdeen UK
12. Kansas Biological Survey & Center for Ecological Research, Department of Ecology and Evolutionary Biology University of Kansas Lawrence Kansas USA
13. UK Centre for Ecology & Hydrology, Environment Centre Wales Bangor UK
14. USDA Forest Service, Northern Research Station Rhinelander Wisconsin USA
15. Institute of Soil and Water Conservation Northwest A&F University Yangling China
16. Department of Biological Sciences University of Texas at El Paso El Paso Texas USA
17. Department of Forest Resources, University of Minnestoa and Institute for Global Change Biology University of Michigan St. Paul Minnesota USA
18. Institute for Global Change Biology and School for Environment and Sustainability University of Michigan Ann Arbor Michigan USA
19. Hawkesbury Institute for the Environment, Western Sydney University New South Wales Australia
20. Oklahoma Biological Survey & Department of Microbiology and Plant Biology University of Oklahoma Norman Oklahoma USA
21. National Hulunber Grassland Ecosystem Observation and Research Station, Institute of Agricultural Resources and Regional Planning Chinese Academy of Agricultural Sciences Beijing China
22. State Key Laboratory of Vegetation and Environmental Change, Institute of Botany Chinese Academy of Sciences Beijing China