Sean T Michaletz¹, Sandra Milena Duran², Vanessa Buzzard³, Steven W Leavitt³, Nate McDowell⁴, Scott R Saleska⁵, Joost L M Van Haren⁶, Peter A A Troch⁷ and Brian Joseph Enquist², (1)University of British Columbia, Department of Botany and Biodiversity Research Centre, Vancouver, Canada, (2)University of Arizona, Ecology and Evolutionary Biology, Tucson, AZ, United States, (3)University of Arizona, Tucson, AZ, United States, (4)Pacific Northwest National Laboratory, Richland, WA, United States, (5)University of Arizona, Department of Ecology & Evolutionary Biology, Tucson, AZ, United States, (6)University of Arizona, Biosphere 2, Tucson, AZ, United States, (7)University of Arizona, Hydrology and Atmospheric Sciences, Tucson, AZ, United States