The Tropics play a central role in the global heat and moisture budget. My research interests focus on the late Quaternary environments of the Neotropics, including Florida. I am particularly interested in the history and processes of climatic change.
Interdisciplinary investigations are a mainstay of Quaternary studies today.
They are essential for validation of global circulation models, and provide the framework for predictions of future global warming. I work closely with specialists in limnology, geochemistry, micro-fossil analysis, and stable isotopes. My background in ecology and archaeology contribute to these collaborative projects. These studies highlight the discrepancy between large temperature depressions on land and apparently warm tropical sea-surface temperatures during the last glacial maximum. My current research focuses on Holocene records from the Yucatan, Mexico, and Lake Titicaca, Bolivia.