Professor, Department Head, Environmental Science and Studies Program Chair

Environment and Geography

252 Wallace Building
125 Dysart Road
Winnipeg, Manitoba
R3T 2N2
Google Scholar Page

Academic Background

Ph.D., University of Guelph (2002) - Toxicology
B.Sc. (Hons), University of Toronto (1997) Zoology


ENVR2810 - Environmental Critical Thinking and Scientific Research
ENVR3180 - Methods in Ecotoxicology
ENVR4180/GEOG7010 - Ecotoxicological Risk Characterization
ENVR4000/GEOG7010 - Environmental Effects Monitoring

Research Interests

Dr. Hanson is an aquatic ecotoxicologist and ecological risk assessor who focuses on fate and effects of pesticides, wastewater contaminants (e.g., nutrients, pharmaceuticals, microplastics), and unconventional oil. The impacts of these contaminants on non-target species and the ways in which these can influence responses (direct and indirect) observed at the population, community, and ecosystem-level are studied at the laboratory to field-level. The use of mesocosms, model freshwater ecosystems, along with developing new toxicity bioassays in a rapid and effective manner are a core feature of his research program. Dr. Hanson and his team also develop methods to critically evaluate data quality and reporting in the peer reviewed literature for inclusion in risk assessment, including weight of evidence approaches to assign causality.

Recent and Significant Publications

Stoyanovich, S., Rodriguez‐Gil, J.R., Hanson, M., Hollebone, B.P., Orihel, D.M., Palace, V., Faragher, R., Mirnaghi, F.S., Shah, K. Yang, Z., and Blais, J. 2021.   Simulating diluted bitumen spills in boreal lake limnocorrals- Part 2: Factors affecting the physical characteristics and submergence of diluted bitumen. Science of The Total Environment. 790: 148580

Rodriguez‐Gil, J.R., Stoyanovich, S., Hanson, M., Hollebone, B.P., Orihel, D.M., Palace, V., Faragher, R., Mirnaghi, F.S., Shah, K. Yang, Z., Black, T., Cederwall, J., Mason, J., Patterson, S., Timlick, L., Seguin, J., and Blais, J. 2021.  Simulating diluted bitumen spills in boreal lake limnocorrals - Part 1: Experimental design and responses of hydrocarbons, metals, and water quality parameters.  Science of The Total Environment. 790: 148537

Hanson, M. and Brain, R. 2021.  A method to screen for consistency of effect in laboratory toxicity tests: A case study Anurans and the herbicide atrazine. Archives of Environmental Toxicology and Chemistry. 81:123-132.

Smith, P., Armbrust, K., Brain, R., Chen, W., Galic, N., Ghebremichael, L., Giddings, J., Hanson, M., Maul, J., Van Der Kraak, G. and Solomon, K. 2021.  Assessment of risks to listed species from the use of atrazine in the USA. Journal of Toxicology and Environmental Health-B. 24(6):223-306.

Black, T.A., Hanson, M.L., Palace, V.P. and Rodriguez‐Gil, J.L. 2021. Surface-dwelling insects in low-energy freshwater environments are highly impacted by oil spills and the surface washing agent Corexit EC9580A used in oil spill response. Environmental Toxicology and Chemistry. 40(5):1298-1307.