1. Department of Biology; Hofstra University; Hempstead NY 11549 U.S.A.
2. Department of Biological Sciences; Fordham University; Bronx NY 10458 U.S.A.
3. Institut für Neurobiologie; Universität Tübingen; Tübingen 72076 Germany
4. School of Life and Environmental Sciences; The University of Sydney; Camperdown 2006 Australia
5. School of Biological Sciences; University of Tasmania; Hobart TAS 7001 Australia
6. Desert Ecology Research Group, School of Life and Environmental Sciences; The University of Sydney; Camperdown 2006 Australia
7. Botanisches Institut, AG Linstädter; Universität zu Köln; D-50674 Köln Germany
8. School of Psychology, Brain and Mind Centre; University of Sydney; Camperdown 2050 Australia
9. School of Medicine; University of Tasmania; Hobart TAS 7001 Australia
10. College of Environmental Science and Forestry; State University of New York; Syracuse NY 13210 U.S.A.
11. Department of Environment, Water and Natural Resources; Natural Resources Adelaide and Mt Lofty Ranges; Willunga 5172 Australia
12. Department of Ecology and Evolutionary Biology; University of California; Los Angeles CA 90095-1606 U.S.A.