Jason Knouft, Ph.D.

Associate Professor

Courses Taught

Biogeography, GIS in Biology, Advanced Ecology, Global Change Biology


Ph.D., University of Illinois 

Research Interests

Knouft's current research interests are primarily focused on the investigation of the effects of human impacts on the environment (climate change, urbanization) on the distribution of aquatic taxa across multiple spatial scales. A goal of this work is to develop hydrologically-based GIS applications for the study of aquatic biodiversity.

Labs and Facilities

Knouft's laboratory currently has openings for master's and doctoral degree students as well as undergraduates. In particular, he is seeking students interested in integrating field, lab, and GIS-based techniques to better understand the factors involved in the regulation of freshwater species distributions and community structure. Please contact Knouft for further information.

Publications and Media Placements

Knouft, J. H. and Chu, M. L. In press. Integrating landscape-scale hydrological models with urban expansion scenarios to predict the impacts of urbanization-induced flow alterations on freshwater fish assemblages. Ecohydrology.

Michel, M. J., Chevin, L-M., and Knouft, J. H. 2014. Evolution of phenotype-environment associations by genetic responses to selection and phenotypic plasticity in a temporally autocorrelated environment. Evolution 68:1374-1384.

Michel, M. J. and Knouft, J. H. 2014. Spatial structure and the temporal transferability of trait-environment relationships. Landscape Ecology 29:467-477.

Chien, H., Yeh, P. J., and Knouft J. H. 2013. Modeling the potential impacts of climate change on streamflow in agricultural watersheds of the Midwestern United States. Journal of Hydrology 491:73-88.

Chu, M. L., Knouft, J. H., Ghulam, A., Pan, Z., and Guzman, J. 2013. Impacts of urbanization on river flow frequency: A controlled experimental modeling-based evaluation approach. Journal of Hydrology 495:1-12.

Niu, S. Q., Franczyk, M., and Knouft, J. H. 2012. Regional species richness, hydrological characteristics and the local species richness of assemblages of North American stream fishes. Freshwater Biology 57:2367-2377.

Michel, M. J. and Knouft J. H. 2012. Niche variability and its consequences for species distribution modeling. PLoS ONE 7:e44932.

Knouft, J. H. and Page, L. M. 2011. Climate, elevation, stream channel diversity, and geographic clines in species richness of North American freshwater fishes. Journal of Biogeography 38:2259-2269.

Knouft, J. H., Caruso, N. M., Dupre, P. J., Anderson, K. A., Trumbo, D. R., and Puccinelli, J. 2011. Using fine-scale GIS data to assess the relationship between intra-annual environmental niche variability and population density in a local stream fish assemblage. Methods in Ecology and Evolution 2:303-311.

Luxbacher, A. M. and Knouft, J. H. 2009. Assessing concurrent patterns of environmental niche and morphological evolution among species of Horned Lizards (Phrynosoma). Journal of Evolutionary Biology 22:1669-1678.

Mitchell, A. L. and Knouft, J. H. 2009. Non-native fishes and native species diversity in freshwater fish assemblages across the United States. Biological Invasions 11:1441-1450.

Knouft, J. H., Losos, J. B., Glor, R. E., and Kolbe J. J. 2006. Phylogenetic analysis of the 
evolution of the niche in lizards of the Anolis sagrei group. Ecology 87:S29-S38.

Langerhans, R. B., Knouft, J. H., and Losos, J. B. 2006. Shared and unique features of evolutionary diversification in Greater Antillean Anolis ecomorphs. Evolution 60:362-369.

Knouft, J. H. 2004. Latitudinal variation in the shape of the species body size distribution: an analysis using freshwater fishes. Oecologia 139:408-417.

Knouft, J. H. and Page, L. M. 2003. The evolution of body size in extant groups of North American freshwater fishes: speciation, size distributions, and Cope's rule. American Naturalist 161:413-421.

Knouft, J. H. 2003. Convergence, divergence, and the effect of congeners on body size ratios in stream fishes. Evolution 57:2374-2382.

Knouft, J. H., Page, L. M., and Plewa, M. J. 2003. Antimicrobial egg cleaning by the fringed darter (Perciformes: Percidae: Etheostoma crossopterum): implications of a novel component of parental care in fishes. Proceedings of the Royal Society of London: Biological Sciences 270:2405-2411.

Knouft, J. H. 2002. Regional analysis of body size and population density in stream fish assemblages: testing predictions of the energetic equivalence rule. Canadian Journal of Fisheries and Aquatic Sciences 59:1350-1360.