Alan R. Townsend,^* Cheryl A. Palm<sup>**


*</sup>Alan R. Townsend (townsena@colorado.edu) is with INSTAAR, the Department of Ecology and Evolutionary Biology, and the Environmental Studies Program at the University of Colorado, Boulder.
^**Cheryl A. Palm is with the Tropical Agriculture Program at the Earth Institute, Columbia University, Palisades, New York.