Wildfire as a major driver of recent permafrost thaw in boreal peatlands
Open access article. Creative Commons Attribution 4.0 International license (CC BY 4.0) applies Permafrost vulnerability to climate change may be underestimated unless effects of wildfire are considered. Here we assess impacts of wildfire on soil thermal regime and rate of thermokarst bog expansion...
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ftunivlethb:oai:opus.uleth.ca:10133/6900 2024-09-15T18:29:18+00:00 Wildfire as a major driver of recent permafrost thaw in boreal peatlands Gibson, Carolyn M. Chasmer, Laura Thompson, Dan Quinton, William L. Flannigan, Mike D. Olefeldt, David 2018 application/pdf https://hdl.handle.net/10133/6900 en eng Nature Portfolio Department of Geography and Environment Arts and Science University of Alberta University of Lethbridge Canadian Forest Service Wilfrid Laurier University https://doi.org/10.1038/s41467-018-05457-1 Gibson, C. M., Chasmer, L. E., Thompson, D. K., Quinton, W. L., Flannigan, M. D., & Olefeldt, D. (2018). Wildfire as a major driver of recent permafrost thaw in boreal peatlands. Nature Communications, 9, Article 3041. https://doi.org/10.1038/s41467-018-05457-1 https://hdl.handle.net/10133/6900 Boreal ecology Cryospheric science Fire ecology Wetlands ecology Permafrost thaw Boreal peatlands Wildland fires Thermokarst bog development Permafrost--Canada Western Wildfires--Canada Peatlands--Canada Thermokarst Article 2018 ftunivlethb 2024-09-03T23:45:31Z Open access article. Creative Commons Attribution 4.0 International license (CC BY 4.0) applies Permafrost vulnerability to climate change may be underestimated unless effects of wildfire are considered. Here we assess impacts of wildfire on soil thermal regime and rate of thermokarst bog expansion resulting from complete permafrost thaw in western Canadian permafrost peatlands. Effects of wildfire on permafrost peatlands last for 30 years and include a warmer and deeper active layer, and spatial expansion of continuously thawed soil layers (taliks). These impacts on the soil thermal regime are associated with a tripled rate of thermokarst bog expansion along permafrost edges. Our results suggest that wildfire is directly responsible for 2200 ± 1500 km2 (95% CI) of thermokarst bog development in the study region over the last 30 years, representing ~25% of all thermokarst bog expansion during this period. With increasing fire frequency under a warming climate, this study emphasizes the need to consider wildfires when projecting future circumpolar permafrost thaw. Yes Article in Journal/Newspaper permafrost Thermokarst University of Lethbridge Institutional Repository |
institution |
Open Polar |
collection |
University of Lethbridge Institutional Repository |
op_collection_id |
ftunivlethb |
language |
English |
topic |
Boreal ecology Cryospheric science Fire ecology Wetlands ecology Permafrost thaw Boreal peatlands Wildland fires Thermokarst bog development Permafrost--Canada Western Wildfires--Canada Peatlands--Canada Thermokarst |
spellingShingle |
Boreal ecology Cryospheric science Fire ecology Wetlands ecology Permafrost thaw Boreal peatlands Wildland fires Thermokarst bog development Permafrost--Canada Western Wildfires--Canada Peatlands--Canada Thermokarst Gibson, Carolyn M. Chasmer, Laura Thompson, Dan Quinton, William L. Flannigan, Mike D. Olefeldt, David Wildfire as a major driver of recent permafrost thaw in boreal peatlands |
topic_facet |
Boreal ecology Cryospheric science Fire ecology Wetlands ecology Permafrost thaw Boreal peatlands Wildland fires Thermokarst bog development Permafrost--Canada Western Wildfires--Canada Peatlands--Canada Thermokarst |
description |
Open access article. Creative Commons Attribution 4.0 International license (CC BY 4.0) applies Permafrost vulnerability to climate change may be underestimated unless effects of wildfire are considered. Here we assess impacts of wildfire on soil thermal regime and rate of thermokarst bog expansion resulting from complete permafrost thaw in western Canadian permafrost peatlands. Effects of wildfire on permafrost peatlands last for 30 years and include a warmer and deeper active layer, and spatial expansion of continuously thawed soil layers (taliks). These impacts on the soil thermal regime are associated with a tripled rate of thermokarst bog expansion along permafrost edges. Our results suggest that wildfire is directly responsible for 2200 ± 1500 km2 (95% CI) of thermokarst bog development in the study region over the last 30 years, representing ~25% of all thermokarst bog expansion during this period. With increasing fire frequency under a warming climate, this study emphasizes the need to consider wildfires when projecting future circumpolar permafrost thaw. Yes |
format |
Article in Journal/Newspaper |
author |
Gibson, Carolyn M. Chasmer, Laura Thompson, Dan Quinton, William L. Flannigan, Mike D. Olefeldt, David |
author_facet |
Gibson, Carolyn M. Chasmer, Laura Thompson, Dan Quinton, William L. Flannigan, Mike D. Olefeldt, David |
author_sort |
Gibson, Carolyn M. |
title |
Wildfire as a major driver of recent permafrost thaw in boreal peatlands |
title_short |
Wildfire as a major driver of recent permafrost thaw in boreal peatlands |
title_full |
Wildfire as a major driver of recent permafrost thaw in boreal peatlands |
title_fullStr |
Wildfire as a major driver of recent permafrost thaw in boreal peatlands |
title_full_unstemmed |
Wildfire as a major driver of recent permafrost thaw in boreal peatlands |
title_sort |
wildfire as a major driver of recent permafrost thaw in boreal peatlands |
publisher |
Nature Portfolio |
publishDate |
2018 |
url |
https://hdl.handle.net/10133/6900 |
genre |
permafrost Thermokarst |
genre_facet |
permafrost Thermokarst |
op_relation |
Gibson, C. M., Chasmer, L. E., Thompson, D. K., Quinton, W. L., Flannigan, M. D., & Olefeldt, D. (2018). Wildfire as a major driver of recent permafrost thaw in boreal peatlands. Nature Communications, 9, Article 3041. https://doi.org/10.1038/s41467-018-05457-1 https://hdl.handle.net/10133/6900 |
_version_ |
1810470710328426496 |