1. INRA UMR Ecologie des Forêts de Guyane BP 709 97387 Kourou Cedex France
2. Department of Biology University of Maryland College Park MD20742 USA
3. Department of Ecology and Evolutionary Biology University of California Los Angeles CA90095 USA
4. Biological and Environmental Sciences University of Stirling StirlingFK9 4LA UK
5. Department of Integrative Biology University of California Berkeley CA94720 USA
6. International Center for Tropical Botany Department of Biological Sciences Florida International University Miami FL33199 USA