Tyler Kohler

Tyler Kohler

PhD 2015



  • BS: Kansas State University, 2007
  • MS: University of Nebraska, 2010
  • PhD: University of Colorado, 2015

Contact Information


Stream ecology

Research Interests

I am interested in how freshwater microbial communities are influenced by abiotic and biological factors through time, and using this information to make informed predictions about past and present ecosystem structure and function. I am particularly interested in links between biofilm structure and biogeochemical cycles, and how these relationships will evolve given climate destabilization, land-use change, and ever-increasing socio-economic disparities.


I am currently a postdoctoral researcher at Charles University in Prague investigating Arctic microbial communities from subglacial sediments. Learn more about the project and the newly formed CryoEco group here:



Photo Gallery




Tyler Kohler, Stanish, L., Daniel Liptzin, Barrett, J. E., Diane M. McKnight 2018: Catch and release: Hyporheic retention and mineralization of N-fixing Nostoc sustains downstream microbial mat biomass in two polar desert streams. Limnology and Oceanography Letters, 3(4): 357-364. DOI: 10.1002/lol2.10087

Kociolek, J. P., Kopalová, K., Hamsher, S. E., Tyler Kohler, Van de Vijver, B., Convery, P., Diane M. McKnight 2017: Freshwater diatom biogeography and the genus Luticola: an extreme case of endemism in Antarctica. Polar Biology, 40(6): 1185-1196. DOI: 10.1007/s00300-017-2090-7

Tyler Kohler, Van Horn, D. J., Darling, J. P., Takacs-Vesbach, C. D., Diane M. McKnight 2016: Nutrient treatments alter microbial mat colonization in two glacial meltwater streams from the McMurdo Dry Valleys, Antarctica. FEMS Microbiology Ecology, 92(4): fiw049. DOI: 10.1093/femsec/fiw049

Van Horn, D. J., Wolf, C. R., Colman, D. R., Jiang, X., Tyler KohlerDiane M. McKnight, Stanish, L., Yazzie, T., Takacs-Vesbach, C. D. 2016: Patterns of bacterial biodiversity in the glacial meltwater streams of the McMurdo Dry Valleys, Antarctica. FEMS Microbiology Ecology, 92(10): fiw148. DOI: 10.1093/femsec/fiw148

Collins, S. M., Tyler Kohler, Thomas, S. A., Fetzer, W. W., Flecker, A. S. 2016: The importance of terrestrial subsidies in stream food webs varies along a stream size gradient. Oikos, 125(5): 674-685. DOI: 10.1111/oik.02713

Vinšová, P., Pinseel, E., Tyler Kohler, Van de Vijver, B., Žárský, J.D., Kavan, J., Kopalová, K. 2015: Diatoms in cryoconite holes and adjacent proglacial freshwater sediments, Nordenskiöld glacier (Spitsbergen, High Arctic). Czech Polar Reports, 5(2): 112-133. DOI: 10.5817/CPR2015-2-11

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Theses & Dissertations