1. Ecosystem Physiology, Faculty of Environment and Natural Resources, Albert-Ludwig-University of Freiburg, Freiburg, Germany.
2. School of Natural Resources and the Environment, University of Arizona, Tucson, AZ, USA.
3. Biosphere 2, University of Arizona, Oracle, AZ, USA.
4. BIO5 Institute, The University of Arizona, Tucson, AZ, USA.
5. Department of Ecology, University of Innsbruck, Innsbruck, Austria.
6. Honors College, University of Arizona, Tucson, AZ, USA.
7. Institute of Geoecology - Environmental Geochemistry, Technical University Braunschweig, Braunschweig, Germany.
8. Department of Civil, Architectural and Environmental Engineering, University of Texas at Austin, Austin, TX, USA.
9. Department of Atmospheric Chemistry, Max Planck Institute for Chemistry, Mainz, Germany.
10. Biogeochemistry of Agroecosystems, University of Göttingen, Göttingen, Germany.
11. Geo-Biosphere Interactions, University of Tuebingen, Tuebingen, Germany.
12. Department of Environmental Science, University of Arizona, Tucson, AZ, USA.
13. Max Planck Institute for Biogeochemistry, Jena, Germany.
14. Aerodyne Research, Billerica, MA, USA.
15. Forest Dynamics, Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), Birmensdorf, Switzerland.
16. Centre for Ecology and Hydrology, University of Edinburgh, Edinburgh, UK.
17. Pacific Northwest National Laboratory, Richland, WA, USA.
18. Energy, Environment and Water Research Center, The Cyprus Institute, Nicosia, Cyprus.