1. Conservation Biology Program, University of Minnesota, St. Paul, MN 55108, USA.
2. Biodiversity and Wildlife Solutions Program, RESOLVE, 1255 23rd St., NW, Washington, DC 20037, USA.
3. Stanford University, Stanford, CA 94305, USA.
4. Smithsonian Conservation Biology Institute, Washington, DC 20013, USA.
5. University of Maryland, College Park, MD 20742, USA.
6. World Resources Institute, 10 G St., Washington, DC 20002, USA.