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Effects of retrogressive thaw slumping on particulate organic carbon dynamics in the Northwest Territories, Canada
DownloadSpring 2022
Climate change is increasing the frequency and intensity of thermokarst and accelerating the delivery of terrestrial organic material from previously sequestered sources to aquatic systems, where it is subject to further biochemical alteration. Rapid climate change in the glacially conditioned...
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Fluvial inorganic carbon cycling across divergently evolving permafrost landscapes (Yukon and Northwest Territories, Canada)
DownloadFall 2019
Across the circumpolar north, rapid warming and intensifying hydrologic cycles are accelerating permafrost thaw and strengthening land-freshwater linkages. Among the most significant implications of this change is the mobilization of large amounts of previously sequestered organic and inorganic...
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Fall 2020
Anthropogenic climate warming is degrading the cryosphere. Retreating alpine glaciers and thawing permafrost pose the risk of releasing previously sequestered legacy contaminants to downstream environments, with potential negative consequences for downstream aquatic ecosystems. In this thesis I...
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Out of the Dark, into the Light? Influence of Wildfire and Thermokarst on Greenhouse Gas Fluxes from Boreal Peat Landscapes near the southern Limit of Permafrost
DownloadFall 2024
Wildfire and permafrost thaw have been common disturbances in the boreal zone for millennia and are now intensified by warming due to human-made climate change. The Taiga Plains ecozone in northwestern Canada is warming at a faster rate than other regions. In this ecozone, permafrost is found at...