Now showing items 1-5 of 5
Organic matter quality in cryosols : effect on soil nitrogen dynamics and greenhouse gas emissions
Over the past millennia, complex terrestrial ecosystems have evolved in the Arctic. However, the stability of these unique ecosystems is in jeopardy because of climate changes. Due to the fact that Arctic soils store great ...
Mercury partitioning in super-permafrost groundwater, Truelove Lowland, Devon Island, Nunavut
The objective of this study was to determine the dominant biogeochemical controls on mercury partitioning in super-permafrost groundwater at Truelove Lowland, Devon Island, Nunavut. Mercury partitioning in snow, ephemeral ...
Greenhouse gas production and consumption in soils of the Canadian High Arctic
Micro-organisms living in the soils of the Canadian High Arctic produce and consume the greenhouse gases (GHGs) CO2, CH4, and N2O, contributing to global nutrient and GHG cycles; however, different vegetation and soil ...
Arsenic in a high arctic soil ecosystem on Devon Island, Nunavut
In this study, total As (T-As) levels in superpermafrost groundwater at a site in the High Arctic doubled over the course of the summer thaw. This increase was not due to snow input, as levels in snow were negligible. ...
The Depth Distribution of Organic Carbon in Mineral Cryosols at Two Sites in the Canadian Arctic
The northern circumpolar permafrost region covers over 15% of the earth’s land surface, and contains about 50% of global belowground organic carbon (OC). There has been a great deal of recent interest in cataloguing the ...