John F Knowles¹, Greg Barron-Gafford², Peter Blanken³, Sabina Dore⁴, Thomas Kolb⁴, Marcy E Litvak⁵ and Russell L Scott¹, (1)USDA-ARS, Southwest Watershed Research Center, Tucson, AZ, United States, (2)University of Arizona, School of Geography and Development, Tucson, AZ, United States, (3)University of Colorado, Boulder, Boulder, CO, United States, (4)Northern Arizona University, Flagstaff, AZ, United States, (5)University of New Mexico, Biology, Albuquerque, NM, United States