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Methylmercury production and export in permafrost peatland catchments of the Taiga Plains
February 15 @ 12:00 pm - 1:00 pmFree
Lauren Thompson, University of Alberta
Ongoing permafrost thaw in northern peatland catchments may increase the production and downstream delivery of neurotoxic methylmercury across the terrestrial-aquatic continuum. Peatlands in boreal-Arctic regions have large stocks of mercury in frozen soils, accumulated through atmospheric deposition of natural and human-emitted mercury over thousands of years. Permafrost thaw in peatlands may shift environmental conditions to facilitate microbial production of methylmercury (methylation). However, the degree to which mercury is methylated post-thaw and exported downstream remains uncertain in northwestern Canada and poses a potential hazard for uptake by aquatic food webs.
This event is part of the Wetland Knowledge Exchange’s monthly webinar series.