1. Department of Renewable Resources, University of Alberta, Edmonton, Alberta, Canada
2. Los Alamos National Laboratory, Earth and Environmental Sciences, Los Alamos, NM, USA
3. Harvard University, Department of Organismic and Evolutionary Biology, 26 Oxford Street, Cambridge, MA, USA
4. Max Planck Institute for Biogeochemistry, Hans-Knöll Str. 10, Jena, Germany
5. Department of Environmental Sciences - Botany, University of Basel, Schönbeinstrasse 6, Basel, Switzerland
6. University of Vienna, Department of Microbiology and Ecosystem Science, Althanstraße 14, Vienna, Austria
7. Stockholm University, Department of Environmental Science and Analytical Chemistry, Stockholm, Sweden
8. University of Gothenburg, Department of Earth Sciences, Guldhedsgatan 5 A, Gothenburg, Sweden
9. Pacific Northwest National Lab, Richland, WA, USA
10. Northern Arizona University, Center for Ecosystem Science and Society and School of Informatics, Computing and Cyber Systems, Flagstaff, AZ, USA
11. Oklahoma State University, Department of Plant Biology, Ecology, and Evolution, 301 Physical Sciences, Stillwater, OK, USA