David D. Breshears,^* Laura López-Hoffman,^** Lisa J. Graumlich<sup>***


*</sup>David D. Breshears () is a Professor in the School of Natural Resources and the Environment, with a joint appointment in the Department of Ecology and Evolutionary Biology, at the University of Arizona. His research interests include vegetation pattern and dynamics and wind and water erosion, all within the context of ecohydrology in the world's drylands; he is particularly focused on regional drought-induced die-off as a global-change phenomena. Address: School of Natural Resources and the Environment, The University of Arizona, 1311 E. Fourth Street, Biosciences East 325, Tucson, AZ 85721-0043, USA. Address: Department of Ecology and Evolutionary Biology, The University of Arizona, 1311 E. Fourth Street, Biosciences East 325, Tucson, AZ 85721-0043, USA. e-mail: daveb@email.arizona.edu
^**Laura López-Hoffman is an Assistant Professor in the School of Natural Resources and the Environment and in the Udall Center for Studies in Public Policy at the University of Arizona. Her research interests include the ecology and policy of managing transboundary systems, particularly the surface waters, aquifers, species, ecosystems, and ecosystem services shared by the United States and Mexico. Address: School of Natural Resources and the Environment, The University of Arizona, 1311 E. Fourth Street, Biosciences East 325, Tucson, AZ 85721-0043, USA. Address: Udall Center for Studies in Public Policy, The University of Arizona, 1311 E. Fourth Street, Biosciences East 325, Tucson, AZ 85721-0043, USA. e-mail: lauralh@email.arizona.edu
^***Lisa J. Graumlich is Dean and the Virginia and Prentice Bloedel Professor of the College of the Environment at the University of Washington. Her research interests include climate change and land-use change impacts on biodiversity and ecosystem processes, and strategies for adaptation and sustainability. Address: College of the Environment, The University of Washington, Seattle, WA 98195-5679, USA. e-mail: envdean@uw.edu