Plinio Sist,^* Sylvie Gourlet-Fleury, Francis E. Putz<sup>**


*</sup>Plinio Sist (sist@cirad.fr) and Sylvie Gourlet-Fleury are affiliated with CIRAD's (Centre de Coopération Internationale en Recherche Agronomique pour le Développement) Environments and Societies Department's Research Unit for the Goods and Services of Tropical Forest Ecosystems (Biens et Services des Ecosystèmes Forestiers Tropicaux), at the Campus International in Baillarguet, Montpellier, France.
^**Francis E. Putz is with the Department of Biology at the University of Florida, in Gainesville.