1. Earth and Environmental Sciences Division Los Alamos National Laboratory Los Alamos New Mexico USA
2. Department of Ecosystem Science and Sustainability Colorado State University Fort Collins Colorado USA
3. USDA Forest Service Rocky Mountain Experiment Station Fort Collins Colorado USA
4. School of the Environment Washington State University Pullman Washington USA
5. Centre for Functional Ecology (CFE), Department of Life Sciences University of Coimbra Coimbra Portugal
6. Swiss Federal Research Institute (WSL) Birmensdorf Switzerland
7. Plant Ecology Research Laboratory (PERL) École Polytechnique Fédérale de Lausanne (EPFL) Lausanne Switzerland
8. Division of Atmospheric Sciences & Global Change Pacific Northwest National Laboratory Richland Washington USA