1. School of Natural Resources and the Environment, Univ. of Arizona228 Biological Science Bldg., East 1311 E. 4th St.TucsonAZ85721
2. Grupo GIGA, Facultad de IngenieríaUniv. de AntioquiaCalle 57 No.53‐108MedellínColombia
3. Biosphere 2Univ. of ArizonaP.O. Box 8746TucsonAZ85738
4. Dep. of Ecology and Evolutionary BiologyUniv. of ArizonaP.O. Box 210088TucsonAZ85721
5. Institute of the Environment, Institute for the Study of Planet Earth, Univ. of ArizonaP.O. Box 210156TucsonAZ85719
6. Dep. of Natural Resource Ecology and ManagementOklahoma State Univ.008C Ag HallStillwaterOK74077