people / Johnson, Pieter
Johnson, Pieter


Pieter Johnson

PhD, University of Wisconsin, 2006
Lab: 303-492-5623



My research focuses on two pervasive and inter-related forms of biological change: disease emergence and species invasions. Both have important consequences not only for individuals and populations, but for entire ecological communities and ecosystem processes. Invasions and disease also have costly economic and health repercussions for human societies. I use long-term data, ecological experiments and modeling approaches to examine the factors that drive disease emergence and biological invasions, and how changes in disease and invasion levels, in turn, affect community interactions and ecosystem processes in aquatic environments.

Disciplines: Socio-ecological systems • Animal ecology • Limnology




Johnson Lab


Emerging threats and persistent conservation challenges for freshwater biodiversity.

Reid, A.J., Carlson, A.K. , Creed, I.F., Eliason, E.J. , Gell, P. A. , Johnson, P.T. , Kidd, K. A. , MacCormack, T.J. , Olden, J.D. , Ormerod, S.J. , Smol, J.P. , Taylor, W.W. , Tockner, K., Vermaire, J.C. , Dudgeon, D. , Cooke, S.J. , Biological Reviews, DOI: 10.1111/brv.12480,


Vertically challenged: How disease suppresses Daphnia vertical migration behavior.

Johnson, P.T., Stanton, D.E., Forshay, K.J., Calhoun, D.M., Limnology and Oceanography, DOI: 10.1002/lno.10676,


Climate regulates alpine lake ice cover phenology and aquatic ecosystem structure.

Preston, DL, Caine, N, McKnight, DM, Williams, MW, Hell, K, Miller, MP, Hart, SJ, Johnson, PTJ, AGU-Geophysical Research Letters, DOI: 10.1002/2016GL069036,

CU Boulder

This material is based upon work supported by the National Science Foundation under Cooperative Agreement #DEB-1637686. Any opinions, findings, conclusions, or recommendations expressed in the material are those of the author(s) and do not necesarily reflect the views of the National Science Foundation.

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