Research

My primary interest lies in the diversity and distributions of tropical organisms. In the past my research
has focused on reptiles and amphibians of the Guiana Shield, South America though I have now expanded to include Madagascar and arthropods (primarily ants).
This work includes examination of both interspecific biogeography of Gondwanan groups and intraspecific patterns of geographic variation within these regions.
In order to understand and interpret the observed patterns, I incorporate fossil, geological, and climatological data. The ability to employ multilocus
nuclear DNA datasets with fossil calibrated divergence-time estimates, statistical methods for testing alternative hypotheses of population history, and
ecological modeling make this a particularly exciting time to study evolution in the tropics.

 

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