Current Research
Research in the Williams Lab spans the gamut, from field- and lab-based collection of lake-sediment cores for paleoecological and paleoclimatic analyses (mainly fossil pollen, charcoal, and related proxies) to continental- to global-scale syntheses of ecological data and climate models. Much of our research focuses on the late Quaternary (the last 20,000 years) as a model system for understanding the interrelationships among vegetation dynamics, climate change, human societies, and other major earth-system events such as the Pleistocene megafaunal extinctions and the rising concentrations of atmospheric CO2.
Projects:
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PalEON: A PaleoEcological Observatory Network
Past and future climate change effects on terrestrial vegetation
'No-Analog' plant associations and climates
Ecological effects of the Pleistocene megafaunal extinctions
Human-environment interaction in prehistoric eastern North America
Abrupt ecological and climate change
Late-Quaternary land-cover change
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