Vilmantas Prėskienis

Director: Isabelle Laurion (INRS)

Codirector: Daniel Fortier

Primary Address:
Institut national de la recherche scientifique, Centre Eau Terre Environnement (INRS-ETE)
490, rue de la Couronne
Québec (Québec) G1K 9A9


Project Title

Influence of carbon lability and geomorphology on greenhouse gas emissions from lakes and ponds on Bylot Island (in Canadian Arctic).

Description of the project research

The rapid climate warming in Arctic regions has induced extensive permafrost thawing and the consequent mobilization of a large reservoir of organic carbon that was frozen for millennia. Although the release of this old carbon into the atmosphere, either as carbon dioxide or methane, acts as a positive feedback mechanism to global warming, very little is known about the extent and rate of the gas release and the biochemical processes involved as the different carbon pools are becoming available to ecosystems of Arctic lakes and ponds. As a part of an interdisciplinary project investigating the influence of geomorphological and limnological factors on GHG emissions from water bodies on Bylot Island, Nunavut, my study focuses on effects of erosion, morphology of water body, and quality of available carbon pools  on production and emissions of GHG.

Keywords: Bylot Island, permafrost, greenhouse gases, arctic lakes, thermo-erosion, carbon lability

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