1. a Department of Geography , Texas State University , 601 University Drive ELA #139, San Marcos, TX, 78666, USA E-mail:
2. b Department of Integrative Biology , University of California , 3060 VLSB, Berkeley, CA, 94720, USA E-mail:
3. c Department of Environmental Science, Policy and Management , University of California , Berkeley, CA, 94720, USA E-mail: