Forestry and Mercury Pollution
The group is currently doing research in northern Ontario with academic (including Drs. Karen Kidd and Stephanie Melles), industry and government (including Drs. Rob Mackereth and Erik Emilson) partners to investigate how different "suites" of forestry best management practices impact mercury transport from terrestrial systems, methylmercury formation and bioaccumulation in nearby aquatic ecosystems. Research approaches are varied and include a mixture of fieldwork, laboratory experimentation and modelling.  
The group has done some interesting work on this subject in the past, but there are many, many interesting problems still to tackle. For an idea of this kind of work, below are a few selected papers published by our group about forestry and mercury pollution:
Negrazis, L.; Kidd, K.A.; Erdozain, M.; Emilson, E.; Mitchell, C.P.J.; Gray, M. (in press) Effects of forest management on mercury bioaccumulation and biomagnification along the river continuum. Environmental Pollution.
McCarter, C.P.R.; Sebestyen, S.D.; Eggert, S.L.; Kolka, R.K.; Mitchell, C.P.J. (2022) Effects of forest harvesting and residual biomass harvesting on hillslope mercury mobilization and downgradient mercury accumulation. Journal of Geophysical Research – Biogeosciences, e2022JG006826.
McCarter, C.P.R.; Sebestyen, S.D.; Eggert, S.L.: Kolka, R.K.; Mitchell, C.P.J. (2021) Differential subsurface mobilization of ambient mercury and isotopically enriched mercury tracers in a harvested and residue harvested hardwood forest in northern Minnesota. Biogeochemistry, 154(1), 119-138. 
Hsu-Kim, H.; Eckley, C.S.; Acha, D.; Feng, X.; Gilmour, C.C.; Jonsson, S.; Mitchell, C.P.J. (2018) Challenges and opportunities for managing aquatic mercury pollution in altered landscapes. Ambio, 47(2), 141-169.
Mazur, M.; Mitchell, C.P.J.; Eckley, C.S.; Eggert, S.L.; Kolka, R.K.; Sebestyen, S.D.; Swain, E.B. (2014) Gaseous mercury fluxes from forest soils in response to forest harvesting intensity: A field manipulation experiment.  Science of the Total Environment, 496, 678-687.    
Mitchell, C.P.J., Kolka, R.K. and Fraver, S. (2012) Singular and combined effects of blowdown, salvage logging, and wildfire on forest floor and soil mercury pools.  Environmental Science & Technology, 46, 7963-7970.