1. Conservation Education and Science Department; Arizona-Sonora Desert Museum; Tucson AZ 85743 U.S.A.
2. Department of Ecology and Evolutionary Biology; Princeton University; Princeton NJ 08544 U.S.A.
3. School of Environmental and Forest Sciences; University of Washington; Seattle WA 98195 U.S.A.
4. Earth 2 Ocean Research Group; Simon Fraser University; Burnaby BC V5A 1S6 Canada
5. Fairhaven College of Interdisciplinary Studies; Western Washington University; Bellingham WA 98225 U.S.A.
6. Botany Department; University of Wisconsin; Madison WI 53706 U.S.A.
7. National Zoological Park; Smithsonian Conservation Biology Institute; Washington DC 20013 U.S.A.