1. Department of Ecology and Evolutionary Biology University of Colorado Boulder CO USA
2. US Geological Survey, Southwest Biological Science Center Flagstaff AZ USA
3. Department of Environmental Science and Studies DePaul University Chicago IL USA
4. Department of Biology New Mexico State University Las Cruces NM USA
5. School of Forestry Northern Arizona University Flagstaff AZ USA
6. US Geological Survey, Southwest Biological Science Center Moab UT USA
7. Department of Premier and Cabinet, School of Biological, Earth, and Environmental Sciences University of New South Wales Sydney NSW Australia
8. Department of Animal and Range Sciences New Mexico State University Las Cruces NM USA
9. División de Ciencias Ambientales Instituto Potosino de Investigación Científica y Tecnológica San Luis Potosí Mexico
10. Multiphase Chemistry Department Max Planck Institute for Chemistry Mainz Germany
11. Estación Experimental de Zonas Áridas (CSIC) Almería Spain
12. Key Laboratory of Biogeography and Bioresources in Arid Land Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences Urumqi China