John (Jack) Williams

I'm an earth system scientist, paleoecologist, and biogeographer who studies species responses to past and future climate change. Research themes include novel climates and communities, abrupt change, megaherbivore extinctions, paleoecoinformatics, and data-model synthesis. I am a professor in Geography and am the former Director of the Center for Climatic Research.

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Research Scientists and Postdoctoral Researchers

Angelina (Angie) Perrotti

I am a Research Scientist with expertise in palynology, archaeology, and paleoecology. My research interests include the peopling of the Americas and late Quaternary megafaunal extinction. Specifically, I use palynological and geochemical proxies to understand the effects of extinction including changes in vegetation composition and fire regimes. In my spare time, I like walking my dog and doing step aerobics.

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Simon J. Goring

I am an Assistant Research Scientist with an interest in climate-vegetation relationships and informatics across ecology the geosciences. I seek to understand the relationships between climate, forest composition, land use change and critical zone processes by harnessing quantitative and computational advances and a broad array of heterogeneous data. I lead the Informatics WG of the Neotoma Paleoecology Database and serve on the EarthCube Leadership Committee

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Quinn Asena

I am a post-doc in palaeoecological modelling, working with Jack Williams and Tony Ives. Currently working on fitting state-space modells to palaeoproxy data to estimate speices-species interactions and species-environment interactions.

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Graduate Students

Adrian George

I’m a PhD candidate in Physical Geography interested in paleoecology, bioclimatic sensitivity, and interactive maps. My PhD research involves exploring the patterns of tropical ecoclimatic sensitivity.

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Nora Schlenker

I’m a Ph.D. candidate in Earth Systems Geography interested in paleoecology, biogeography, climate change, and niche analysis. My dissertation aims to understand ecological change by scaling from a site-level multi-proxy Holocene abrupt vegetation change to a synthesis of how niche dynamics change over space and time.

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Ismael G. Espinoza

I am a second-year PhD student in Earth Systems Geography and Fulbright Scholar from Colombia. My research interests revolve around Quaternary ecology and climate-mediated vegetation dynamics. My PhD research project includes using ancient environmental DNA (aeDNA) and pollen records to understand vegetation responses to anthropogenic impacts.

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Eric P Giese

I am a Master’s student developing a high-resolution palaeoecological timeline of a basin in Southeastern Wisconsin that recorded the environmental evolution of the last 27,000 years. My short-term goal is understanding vegetation response rates to collapsing ice sheets and rapid climate change. My long-term goal is to develop a predictability model for locating open-air occupation sites of the first peoples to inhabit the Americas via the lens of periglacial paleoenvironments. My interests lie somewhere along the intersection of geography, archaeology, geology, biology, and GIS. If I had spare time, I would probably be backpacking somewhere remote, at high-altitude, thinking about what the first people to see such landscapes were doing and wondering why I am not sitting by my fireplace at home with my dog and a beer.

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Undergraduates

Alumni