Influence of Climate Warming on Mercury Dynamics in High Arctic Lakes

We have preliminary evidence from our monitoring lakes that temperature increases the production of MeHg in sediment, and we thus hypothesize that this effect increases MeHg concentrations in sediments, sediment-dwelling insects (chironomids), and char that feed on the insects. During 2013 and 2014, we will intensively study water temperature and MeHg dynamics in four lakes near Resolute Bay. Fieldwork will depend on the help of local people in Resolute Bay. We will couple results from this study with monitoring data from char in a bioaccumulation model to better understand and predict how the changing sources of Hg and climate change will influence the accumulation of Hg and associated ecosystem health risks over time.

Metadata Access
Creator Paul Drevnick; Alicia Manik; Benjamin Barst; Carl Lamborg; Debbie Iqaluk; Derek Muir; Günter Köck; Karista Hudelson
Publisher Canadian Cryospheric Information Network
Contributor Polar Data Catalogue
Publication Year 2014
Rights Research programs, CCIN, or ArcticNet take no liability for the use or transmission of this data
OpenAccess true
Contact drevnick(at); pdc(at)
Language English
Format Computer file
Discipline Environmental Research
Spatial Coverage (-95.000W, 74.000S, -93.000E, 75.000N)
Temporal Coverage Begin 2012-08-03T00:00:00Z
Temporal Coverage End 9999-12-31T00:00:00Z