1. School of Geography and Development; University of Arizona; 845 N. Park Ave Marshall #526 Tucson AZ 85721 USA
2. B2 Earthscience; Biosphere 2; University of Arizona; Tucson AZ USA
3. Southwest Watershed Research Center; USDA-ARS; 2000 E. Allen Road Tucson AZ 85719 USA
4. Department of Botany and Plant Sciences; University of California Riverside; 3203 Batchelor Hall Riverside CA 92521 USA
5. Ecology and Evolutionary Biology; University of California; Irvine CA USA
6. Center for Environmental Biology; University of California; Irvine CA USA
7. School of Biological Science; University of California; Irvine 449 Steinhaus Hall Irvine CA 92697 USA