1. Biology Department, Dalhousie University, 1355 Oxford Street, Halifax, NS, Canada B3H 4J1.
2. Bren School of Environmental Science and Management, Bren Hall 3428, University of California, Santa Barbara, CA 93106–5131, USA.
3. Department of Anthropology, 155 Pettengill Hall, Bates College, Lewiston, ME 04240, USA.
4. Resource Management in Asia-Pacific Program, Research School of Pacific and Asian Studies, Australian National University, Canberra, ACT 0200, Australia.
5. Center for Tropical Paleoecology and Archeology, Smithsonian Tropical Research Institute, Unit 0948, APO AA 34002–0948, Republic of Panama.