Rapid responses of permafrost and vegetation to experimentally increased snow cover in sub-arctic Sweden
Increased snow depth already observed, and that predicted for the future are of critical importance to many geophysical and biological processes as well as human activities. The future characteristics of sub-arctic landscapes where permafrost is particularly vulnerable will depend on complex interac...
Published in: | Environmental Research Letters |
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Language: | English |
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IOP Publishing
2013
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Online Access: | https://lup.lub.lu.se/record/4172430 https://doi.org/10.1088/1748-9326/8/3/035025 |
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ftulundlup:oai:lup.lub.lu.se:71b5e840-cad8-4ec0-ad9a-4cb3836b83c0 2023-05-15T13:03:08+02:00 Rapid responses of permafrost and vegetation to experimentally increased snow cover in sub-arctic Sweden Johansson, Margareta Callaghan, Terry V. Bosiö, Julia Åkerman, Jonas Jackowicz-Korczynski, Marcin Christensen, Torben 2013 https://lup.lub.lu.se/record/4172430 https://doi.org/10.1088/1748-9326/8/3/035025 eng eng IOP Publishing https://lup.lub.lu.se/record/4172430 http://dx.doi.org/10.1088/1748-9326/8/3/035025 wos:000325247100070 scopus:84885460845 Environmental Research Letters; 8(3), no 035025 (2013) ISSN: 1748-9326 Physical Geography snow manipulation sub-arctic permafrost active layer thickness vegetation changes contributiontojournal/article info:eu-repo/semantics/article text 2013 ftulundlup https://doi.org/10.1088/1748-9326/8/3/035025 2023-02-01T23:35:23Z Increased snow depth already observed, and that predicted for the future are of critical importance to many geophysical and biological processes as well as human activities. The future characteristics of sub-arctic landscapes where permafrost is particularly vulnerable will depend on complex interactions between snow cover, vegetation and permafrost. An experimental manipulation was, therefore, set up on a lowland peat plateau with permafrost, in northernmost Sweden, to simulate projected future increases in winter precipitation and to study their effects on permafrost and vegetation. After seven years of treatment, statistically significant differences between manipulated and control plots were found in mean winter ground temperatures, which were 1.5 degrees C higher in manipulated plots. During the winter, a difference in minimum temperatures of up to 9 degrees C higher could be found in individual manipulated plots compared with control plots. Active layer thicknesses increased at the manipulated plots by almost 20% compared with the control plots and a mean surface subsidence of 24 cm was recorded in the manipulated plots compared to 5 cm in the control plots. The graminoid Eriophorum vaginatum has expanded in the manipulated plots and the vegetation remained green longer in the season. Article in Journal/Newspaper Active layer thickness Arctic Eriophorum Peat Peat plateau permafrost Lund University Publications (LUP) Arctic Environmental Research Letters 8 3 035025 |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Physical Geography snow manipulation sub-arctic permafrost active layer thickness vegetation changes |
spellingShingle |
Physical Geography snow manipulation sub-arctic permafrost active layer thickness vegetation changes Johansson, Margareta Callaghan, Terry V. Bosiö, Julia Åkerman, Jonas Jackowicz-Korczynski, Marcin Christensen, Torben Rapid responses of permafrost and vegetation to experimentally increased snow cover in sub-arctic Sweden |
topic_facet |
Physical Geography snow manipulation sub-arctic permafrost active layer thickness vegetation changes |
description |
Increased snow depth already observed, and that predicted for the future are of critical importance to many geophysical and biological processes as well as human activities. The future characteristics of sub-arctic landscapes where permafrost is particularly vulnerable will depend on complex interactions between snow cover, vegetation and permafrost. An experimental manipulation was, therefore, set up on a lowland peat plateau with permafrost, in northernmost Sweden, to simulate projected future increases in winter precipitation and to study their effects on permafrost and vegetation. After seven years of treatment, statistically significant differences between manipulated and control plots were found in mean winter ground temperatures, which were 1.5 degrees C higher in manipulated plots. During the winter, a difference in minimum temperatures of up to 9 degrees C higher could be found in individual manipulated plots compared with control plots. Active layer thicknesses increased at the manipulated plots by almost 20% compared with the control plots and a mean surface subsidence of 24 cm was recorded in the manipulated plots compared to 5 cm in the control plots. The graminoid Eriophorum vaginatum has expanded in the manipulated plots and the vegetation remained green longer in the season. |
format |
Article in Journal/Newspaper |
author |
Johansson, Margareta Callaghan, Terry V. Bosiö, Julia Åkerman, Jonas Jackowicz-Korczynski, Marcin Christensen, Torben |
author_facet |
Johansson, Margareta Callaghan, Terry V. Bosiö, Julia Åkerman, Jonas Jackowicz-Korczynski, Marcin Christensen, Torben |
author_sort |
Johansson, Margareta |
title |
Rapid responses of permafrost and vegetation to experimentally increased snow cover in sub-arctic Sweden |
title_short |
Rapid responses of permafrost and vegetation to experimentally increased snow cover in sub-arctic Sweden |
title_full |
Rapid responses of permafrost and vegetation to experimentally increased snow cover in sub-arctic Sweden |
title_fullStr |
Rapid responses of permafrost and vegetation to experimentally increased snow cover in sub-arctic Sweden |
title_full_unstemmed |
Rapid responses of permafrost and vegetation to experimentally increased snow cover in sub-arctic Sweden |
title_sort |
rapid responses of permafrost and vegetation to experimentally increased snow cover in sub-arctic sweden |
publisher |
IOP Publishing |
publishDate |
2013 |
url |
https://lup.lub.lu.se/record/4172430 https://doi.org/10.1088/1748-9326/8/3/035025 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Active layer thickness Arctic Eriophorum Peat Peat plateau permafrost |
genre_facet |
Active layer thickness Arctic Eriophorum Peat Peat plateau permafrost |
op_source |
Environmental Research Letters; 8(3), no 035025 (2013) ISSN: 1748-9326 |
op_relation |
https://lup.lub.lu.se/record/4172430 http://dx.doi.org/10.1088/1748-9326/8/3/035025 wos:000325247100070 scopus:84885460845 |
op_doi |
https://doi.org/10.1088/1748-9326/8/3/035025 |
container_title |
Environmental Research Letters |
container_volume |
8 |
container_issue |
3 |
container_start_page |
035025 |
_version_ |
1766329052460744704 |