1. John Muir Institute of the Environment University of California Davis CA USA
2. Department of Land, Air and Water Resources University of California Davis CA USA
3. Department of Marine, Earth, and Atmospheric Sciences North Carolina State University at Raleigh Raleigh NC USA
4. Instituto de Investigaciones Fisiol ogicas y Ecol ogicas Vinculadas a la Agricultura (IFEVA) and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Agronomía Universidad de Buenos Aires Buenos Aires Argentina
5. CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology Chinese Academy of Sciences Shenyang China
6. School of Geographical Sciences Northeast Normal University Changchun China
7. Department of Agronomy and Horticulture University of Nebraska–Lincoln Lincoln NE USA
8. Western Ecology Division Environmental Protection Agency Washington DC USA
9. Appalachian Laboratory University of Maryland Center for Environmental Science Cambridge MD USA
10. Department of Earth Sciences VU Amsterdam Amsterdam, Netherlands
11. Louis Bolk Institute Bunnik Netherlands
12. Department of Environmental Sciences University of Virginia Charlottesville VA USA
13. School of Public Affairs Zhejiang University Zhejiang China
14. Centro de Energia Nuclear na Agricultura Univesidade de São Paulo São Paulo Brazil
15. Cary Institute of Ecosystem Studies Millbrook NY USA
16. Agricultural Sustainability Institute University of California Davis CA USA