Spatial variability of carbon emissions within a drained lake basin and its surrounding tundra, Illisarvik, Northwest Territories

This study investigates the spatial and temporal variations of carbon emissions and their controls at a 38-year-old drained lake basin located on Richards Island, NT. Greenhouse gas fluxes were collected from plots with different vegetation throughout the basin and in surrounding tundra during the g...

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Main Author: Laforce, Andree-Anne
Format: Thesis
Language:unknown
Published: 2018
Subjects:
Online Access:https://curve.carleton.ca/9669d323-538c-4ddb-8a5a-65e4d91d5f9b
http://catalogue.library.carleton.ca/record=b4486183
https://doi.org/10.22215/etd/2018-12919
id ftcarletonuniv:oai:curve.carleton.ca:30945
record_format openpolar
spelling ftcarletonuniv:oai:curve.carleton.ca:30945 2023-05-15T17:46:38+02:00 Spatial variability of carbon emissions within a drained lake basin and its surrounding tundra, Illisarvik, Northwest Territories Laforce, Andree-Anne 2018 https://curve.carleton.ca/9669d323-538c-4ddb-8a5a-65e4d91d5f9b http://catalogue.library.carleton.ca/record=b4486183 https://doi.org/10.22215/etd/2018-12919 unknown https://curve.carleton.ca/9669d323-538c-4ddb-8a5a-65e4d91d5f9b http://catalogue.library.carleton.ca/record=b4486183 https://doi.org/10.22215/etd/2018-12919 Thesis/Dissertation 2018 ftcarletonuniv https://doi.org/10.22215/etd/2018-12919 2022-01-23T08:11:43Z This study investigates the spatial and temporal variations of carbon emissions and their controls at a 38-year-old drained lake basin located on Richards Island, NT. Greenhouse gas fluxes were collected from plots with different vegetation throughout the basin and in surrounding tundra during the growing season. Wet sedge sites were significant sources of methane (7 to 355 nmol m-2 s-1) while most other sites were sinks. Carbon dioxide fluxes varied from 0.5 to 13 mol m-2 s-1 with highest fluxes outside the basin. Air temperature was positively correlated with carbon dioxide emissions at the majority of sites while soil moisture and vegetation type was the main control on methane fluxes. Bulk age of the respired carbon dioxide was mostly modern, reflecting rapid cycling of recently sequestered carbon. Overall, the carbon emissions were similar to other tundra sites elsewhere. Thesis Northwest Territories Richards Island Tundra CURVE - Carleton University Research Virtual Environment Northwest Territories
institution Open Polar
collection CURVE - Carleton University Research Virtual Environment
op_collection_id ftcarletonuniv
language unknown
description This study investigates the spatial and temporal variations of carbon emissions and their controls at a 38-year-old drained lake basin located on Richards Island, NT. Greenhouse gas fluxes were collected from plots with different vegetation throughout the basin and in surrounding tundra during the growing season. Wet sedge sites were significant sources of methane (7 to 355 nmol m-2 s-1) while most other sites were sinks. Carbon dioxide fluxes varied from 0.5 to 13 mol m-2 s-1 with highest fluxes outside the basin. Air temperature was positively correlated with carbon dioxide emissions at the majority of sites while soil moisture and vegetation type was the main control on methane fluxes. Bulk age of the respired carbon dioxide was mostly modern, reflecting rapid cycling of recently sequestered carbon. Overall, the carbon emissions were similar to other tundra sites elsewhere.
format Thesis
author Laforce, Andree-Anne
spellingShingle Laforce, Andree-Anne
Spatial variability of carbon emissions within a drained lake basin and its surrounding tundra, Illisarvik, Northwest Territories
author_facet Laforce, Andree-Anne
author_sort Laforce, Andree-Anne
title Spatial variability of carbon emissions within a drained lake basin and its surrounding tundra, Illisarvik, Northwest Territories
title_short Spatial variability of carbon emissions within a drained lake basin and its surrounding tundra, Illisarvik, Northwest Territories
title_full Spatial variability of carbon emissions within a drained lake basin and its surrounding tundra, Illisarvik, Northwest Territories
title_fullStr Spatial variability of carbon emissions within a drained lake basin and its surrounding tundra, Illisarvik, Northwest Territories
title_full_unstemmed Spatial variability of carbon emissions within a drained lake basin and its surrounding tundra, Illisarvik, Northwest Territories
title_sort spatial variability of carbon emissions within a drained lake basin and its surrounding tundra, illisarvik, northwest territories
publishDate 2018
url https://curve.carleton.ca/9669d323-538c-4ddb-8a5a-65e4d91d5f9b
http://catalogue.library.carleton.ca/record=b4486183
https://doi.org/10.22215/etd/2018-12919
geographic Northwest Territories
geographic_facet Northwest Territories
genre Northwest Territories
Richards Island
Tundra
genre_facet Northwest Territories
Richards Island
Tundra
op_relation https://curve.carleton.ca/9669d323-538c-4ddb-8a5a-65e4d91d5f9b
http://catalogue.library.carleton.ca/record=b4486183
https://doi.org/10.22215/etd/2018-12919
op_doi https://doi.org/10.22215/etd/2018-12919
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