John W. (Jack) Williams

Position title: Department Chair, Professor

Pronouns: he/him/his


Website: Williams Lab Website

Phone: (608) 265-5537

550 North Park St
Department of Geography
University of Wisconsin
Madison, WI 53706

Williams Lab News & Updates
Neotoma Paleoecology Database
Range Mapper (Animated Maps)
Center for Climatic Research
Center for Ecology and the Environment


Ph.D., Department of Geosciences, Brown University, 1999 M.Sc., Department of Geosciences, Brown University,1996 B.A., Department of Geology, Oberlin College, 1993

Research Areas

Paleoecology, Paleoecoinformatics, Paleoclimatology, Novel Ecosystems, Vegetation Dynamics, Global Climate Change, Quaternary Environments.


Geog/NIES 120: Global Physical Environments
Geog/GeoSci/AOS 335: Climatic Environments of the Past
Geog/AOS/NIES 332: Climate Change: Science and Impacts
Geog/GeoSci 523: Advanced Paleoecology

Geog 920: Graduate Seminar in Earth System Geography