Ecologists are challenged to reconcile the historical biogeography of long-evolved native species with the emerging and rapidly expanding patterns of recently arrived non-indigenous species. In contrast to terrestrial species, freshwater fishes are uniquely constrained because their ability to respond to environmental change is limited to movement defined by the connectivity of water. Our research investigates changes in distribution of native species due to climate and other human-related drivers, as well as forecasting future distribution and spread of novel invaders.

Recent lab publications in this area include:

Mims, M.C., and J.D. Olden. 2013. Fish assemblages respond to altered flow regimes via ecological filtering of life history strategies. Freshwater Biology 58:50-62. PDF

Larson, E.R. and J.D. Olden. 2013. Crayfish occupancy and abundance in lakes of the Pacific Northwest. Freshwater Science 32: 94-107. PDF

Larson, E.R., and J.D. Olden. 2012. Using avatar species to model the potential distribution of emerging invaders. Global Ecology and Biogeography 21: 1114-1125. PDF

Lawrence, D.J., Olden, J.D., and C.E. Torgersen. 2012. Spatiotemporal patterns and habitat associations of smallmouth bass (Micropterus dolomieu) invading salmon-rearing habitat. Freshwater Biology 57: 1929-1946. PDF