R. DeFries, F. Rovero, P. Wright, J. Ahumada, S. Andelman, K. Brandon, J. Dempewolf, A. Hansen, J. Hewson, J. Liu. 2009. Linking Plot-level Biodiversity Measurements with Human Influences over Multiple Spatial Scales in the Tropics: A Conceptual Framework. Frontiers in Ecology and the Environment. doi:10.1890/080104