Dr. Mark Hanson

Department Head

Chair, Environmental Science and Studies Program

Department of Environment and Geography

252 Wallace
University of Manitoba
Winnipeg, Manitoba
R3T 2N2
(204) 474-9897
Fax: (204) 474-7699


Ph.D. University of Guelph
Postdoctoral Fellow INRA, France


Research Interests

Dr. Hanson’s research focuses on the response of freshwater organisms to various types of stressors, with a special emphasis on aquatic plants and invertebrates. The interactions between organisms and the way in which these can influence the stress response are studied at the laboratory and field-level.  This helps in our understanding and ability to predict the risk an exposure to a toxicant or change in water quality can provoke at the ecosystem-level. The use of microcosms, large-scale model freshwater ecosystems, is emphasized along with developing new methodologies to assess changes in water quality in a rapid and effective manner.


Recent Publications

Nema M., Hanson M., and Muller K. 2019. The taxonomy and response to herbicides of the egg-loving green alga, Oophila amblystomatis (Chlamydomonadales). Symbiosis. 77(1): 23-39.

Challis, J., Stroski, K., Luong, K., Hanson, M.L., and Wong, C.S. 2018. Field evaluation and in-situ stress-testing of the organic-diffusive gradients in thin-films passive sampler.  Environmental Science and Technology. 52(21):12573-12582.

Finnegan, M.C., Emburey, S., Hommen, U., Baxter, L., Hoekstra, P., Hanson, M.L., Thompson, H., and Hamer, M. 2018. A freshwater mesocosm study into the effects of the neonicotinoid insecticide thiamethoxam at multiple trophic levels.  Environmental Pollution. 242:1444-1457.

Chaves-Barquero, L. Luong, K., Rudy, M., Frank, R.A., Hanson, M.L. and Wong, C.S. 2018. Subsurface filtration technology to attenuate pharmaceuticals, nutrients and toxicity for rural wastewaters. Chemosphere. 209:767-755.

Challis, J.K., Cuscito, L.D., Joudan, S., Luong, K.H., Knapp, C.W., Hanson, M.L., and Wong, C.S., 2018. Inputs, source apportionment, and transboundary transport of pesticides and other polar organic contaminants along the lower Red River, Manitoba, Canada. Science of the Total Environment. 635:803-816.

Brain, R.A., Schneider, S.Z., Anderson, J.C., Knopper, L.D., Wolf, J.C., and Hanson, M.L. 2018. Extended fish short-term reproduction assays with the fathead minnow and Japanese medaka: No evidence of impaired fecundity from exposure to atrazine. Chemosphere. 205:126-136.

Lobson, C., Vanderpont, A., Lu, Z., Luong, K., Seburn, D., Arentsen, M., Vera, T., Moore, D., White, M., Hann, B., Prosser, R., Wong, C., and Hanson M. 2018. Fate and effects of neonicotinoid insecticide thiamethoxam in shallow model wetlands. Science of the Total Environment. 637:1150-1157.

Hanson, M., Deeth, L., and Prosser, R. 2018. Evidence of citation bias in the ecotoxicology pesticide literature. Ecotoxicology. 27(7):1039-1045.

Anderson P, Warrack S, Langen V, Challis J, Hanson M, Rennie MD. 2017. Microplastic contamination in Lake Winnipeg, Canada. Environ Pollut. 225:223-231.

Hanson M, Wolff B, Green J, Kivi M, Panter G, Warne M, Ågerstrand M, Sumpter J. 2017. How we can make ecotoxicology more valuable to environmental protection. Sci Tot Env. 578:228-235.

Rodŕıguez-Gil JL, Prosser R, Hanta G, Poirier D, Lissemore L, Hanson M, Solomon K. 2017. Aquatic hazard assessment of MON 0818, a commercial mixture of alkylamine ethoxylates commonly used in glyphosate-containing herbicide formulations. Part 2: Roles of sediment, temperature, and capacity for recovery following a pulsed exposure. Environ Toxicol Chem. 36:512-521.

Rodŕıguez-Gil JL, Prosser R, Poirier D, Thompson D, Lissemore L, Hanson M, Solomon K. 2017. Aquatic hazard assessment of MON 0818, a commercial mixture of alkylamine ethoxylates commonly used in glyphosate-containing herbicide formulations. Part 1: Species sensitivity distributions from laboratory acute exposures. Environ Toxicol Chem. 36:501-511.

Cardinal P, Anderson J, Carlson J, Low J, Challis J, Wong C, Hanson M. 2016. Pharmaceutical fate in model wastewater treatment wetland mesocosms following phosphorous addition and late-season harvesting of macrophytes. Environ Sci Pollut Res. 23(22):22678-22690.

Challis J, Hanson M, Wong C. 2016. Development and calibration of an organic-diffusive gradients in thin films aquatic passive sampler for a diverse suite of polar organic contaminants. Anal Chem. 88:10583–10591.

Chaves Barquero LG, Luong K, Mundy C, Knapp C, Hanson M, Wong C. 2016. The release of wastewater contaminants in the Arctic: A case study from Cambridge Bay, Nunavut, Canada. Env Pollut. 218:542-550.


Courses Taught

ENVR 3180  Methods in Ecotoxicology (undergraduate level)
ENVR 4180  Ecotoxicological Risk Characterization (undergraduate level)
GEOG 7010  Ecotoxicological Risk Characterization (graduate level)
ENVR 2270  Environmental Problem Solving and Scientific Thinking (undergraduate level)