Assessing net methylmercury production in changing permafrost environments in Old Crow Flats, Yukon ...

Old Crow Flats (OCF), Yukon, is a forest-tundra ecotone underlain by continuous permafrost characterized by thousands of lakes that is a crucial part of Vuntut Gwitchin First Nation's traditional territory. Permafrost degradation may have implications for mercury (Hg) cycling, as changing terra...

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Bibliographic Details
Main Authors: Corbiere, Nicole, Roy-léveillée, Pascale, Branfireun, Brain, Kirkwood, Adam, Chiasson, Danielle
Format: Still Image
Language:unknown
Published: figshare 2023
Subjects:
Environmental biogeochemistry
Old Crow Flats
Yukon
Gwitchin
Ice
Old Crow
permafrost
Thermokarst
Tundra
wedge*
Online Access:https://dx.doi.org/10.6084/m9.figshare.22630486.v1
https://figshare.com/articles/poster/Assessing_net_methylmercury_production_in_changing_permafrost_environments_in_Old_Crow_Flats_Yukon/22630486/1
Description
Summary:Old Crow Flats (OCF), Yukon, is a forest-tundra ecotone underlain by continuous permafrost characterized by thousands of lakes that is a crucial part of Vuntut Gwitchin First Nation's traditional territory. Permafrost degradation may have implications for mercury (Hg) cycling, as changing terrain conditions can create environments favourable to Hg methylation - transforming inorganic Hg to methylmercury (MeHg), which can bioaccumulate and is neurotoxic. This study describes total mercury (THg) and MeHg concentrations in OCF permafrost degradation features soils, including thermokarst lakes, drained lake basins, and degrading ice-wedge polygons. ...

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