Assistant Professor
University of California, Berkeley, BA
University of Montana, 2008, PhD


I am a plant ecologist with broad interests in the ecological and evolutionary processes that shape population dynamics and species interactions, particularly in a spatial context. At its core, my research program is working toward a process-based understanding of the conservation and management of threatened and invasive species. This long-term goal requires an understanding of the fundamental ecological and evolutionary processes that regulate species distribution and abundances. My current projects include work on spread of populations through fragmented landscapes and life history evolution of reproductive strategies under changing climates.


WILLIAMS, J.L. and FISHMAN, L. 2014 ‘Genetic evidence for founder effects in the introduced range of houndstongue (Cynoglossum officinale)’ Biological Invasions 16, 205-216



CRONE, E.E., ELLIS, M.M., MORRIS, W.F., STANLEY, A., BELL, T., BIERZYCHUDEK, P., EHRLÉN, J., KAYE, T.N., KNIGHT, T.M., LESICA, P., OOSTERMEIJER, G., QUINTANA-ASCENCIO, P.F., TICKTIN, T., VALVERDE, T., WILLIAMS, J.L., DOAK, D.F., GANESAN, R., MCEACHERN, K., THORPE, A.S. and MENGES, E.S. 2013 ‘Ability of matrix models to explain the past and predict the future of plant populations’ Conservation Biology 27(5), 968-978

Winter 2018

GEOB207 Introduction to Biogeography Sections

Geographical ecology emphasizing plant distributions, abiotic-biotic interactions, effects of disturbance, succession, and human impacts across scales. Labs and field trips examine a local site.

Winter 2018

GEOB407 Vegetation Dynamics: Disturbance, Climate and Human Impacts Sections

Investigation of vegetation dynamics integrating theory and research to address contemporary issues of global environmental change. Students will conduct fieldwork and learn to analyze data and interpret results.