1 Durrell Institute of Conservation and Ecology, University of Kent, Canterbury, Kent CT2 7NR, U.K.
2 Forest Management and Development, Department of Environmental Sciences, Swiss Federal Institute of Technology Zurich, Universitätsstrasse 16, ETH Zentrum, 8092 Zurich, Switzerland.
3 Department of Biosciences, Rice University, Houston, TX 77005, U.S.A.
4 Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA 02138, U.S.A.
5 Department of Biology, College of Charleston, Charleston, SC 29424, U.S.A.
6 Missouri Botanical Garden, Madagascar Research and Conservation Program, Lot VP 31, Anjohy Ankadibevava, BP 3391, Antananarivo 101, Madagascar.
7 World Resources Institute, 10 G St. NE Suite 800, Washington, D.C. 20002, U.S.A.