Volatile emissions from thawing permafrost soils are influenced by meltwater drainage conditions
Vast amounts of carbon are bound in both active layer and permafrost soils in the Arctic. As a consequence of climate warming, the depth of the active layer is increasing in size and permafrost soils are thawing. We hypothesize that pulses of biogenic volatile organic compounds are released from the...
Published in: | Global Change Biology |
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2019
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Online Access: | https://curis.ku.dk/portal/da/publications/volatile-emissions-from-thawing-permafrost-soils-are-influenced-by-meltwater-drainage-conditions(e526bb6d-90c7-467d-83e6-a4b6e9a998bd).html https://doi.org/10.1111/gcb.14582 https://curis.ku.dk/ws/files/228971787/volatile_emissions_kramsh_j_2019.pdf |
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ftcopenhagenunip:oai:pure.atira.dk:publications/e526bb6d-90c7-467d-83e6-a4b6e9a998bd 2024-04-21T08:00:04+00:00 Volatile emissions from thawing permafrost soils are influenced by meltwater drainage conditions Kramshøj, Magnus Albers, Christian N. Svendsen, Sarah H. Björkman, Mats P. Lindwall, Frida Björk, Robert G. Rinnan, Riikka 2019 application/pdf https://curis.ku.dk/portal/da/publications/volatile-emissions-from-thawing-permafrost-soils-are-influenced-by-meltwater-drainage-conditions(e526bb6d-90c7-467d-83e6-a4b6e9a998bd).html https://doi.org/10.1111/gcb.14582 https://curis.ku.dk/ws/files/228971787/volatile_emissions_kramsh_j_2019.pdf eng eng info:eu-repo/semantics/openAccess Kramshøj , M , Albers , C N , Svendsen , S H , Björkman , M P , Lindwall , F , Björk , R G & Rinnan , R 2019 , ' Volatile emissions from thawing permafrost soils are influenced by meltwater drainage conditions ' , Global Change Biology , vol. 25 , no. 5 , pp. 1704-1716 . https://doi.org/10.1111/gcb.14582 Arctic biogenic volatile organic compounds climate change gas fluxes meltwater drainage permafrost soil ecology tundra article 2019 ftcopenhagenunip https://doi.org/10.1111/gcb.14582 2024-03-28T01:21:44Z Vast amounts of carbon are bound in both active layer and permafrost soils in the Arctic. As a consequence of climate warming, the depth of the active layer is increasing in size and permafrost soils are thawing. We hypothesize that pulses of biogenic volatile organic compounds are released from the near-surface active layer during spring, and during late summer season from thawing permafrost, while the subsequent biogeochemical processes occurring in thawed soils also lead to emissions. Biogenic volatile organic compounds are reactive gases that have both negative and positive climate forcing impacts when introduced to the Arctic atmosphere, and the knowledge of their emission magnitude and pattern is necessary to construct reliable climate models. However, it is unclear how different ecosystems and environmental factors such as drainage conditions upon permafrost thaw affect the emission and compound composition. Here we show that incubations of frozen B horizon of the active layer and permafrost soils collected from a High Arctic heath and fen release a range of biogenic volatile organic compounds upon thaw and during subsequent incubation experiments at temperatures of 10°C and 20°C. Meltwater drainage in the fen soils increased emission rates nine times, while having no effect in the drier heath soils. Emissions generally increased with temperature, and emission profiles for the fen soils were dominated by benzenoids and alkanes, while benzenoids, ketones, and alcohols dominated in heath soils. Our results emphasize that future changes affecting the drainage conditions of the Arctic tundra will have a large influence on volatile emissions from thawing permafrost soils – particularly in wetland/fen areas. Article in Journal/Newspaper Climate change permafrost Tundra University of Copenhagen: Research Global Change Biology 25 5 1704 1716 |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
topic |
Arctic biogenic volatile organic compounds climate change gas fluxes meltwater drainage permafrost soil ecology tundra |
spellingShingle |
Arctic biogenic volatile organic compounds climate change gas fluxes meltwater drainage permafrost soil ecology tundra Kramshøj, Magnus Albers, Christian N. Svendsen, Sarah H. Björkman, Mats P. Lindwall, Frida Björk, Robert G. Rinnan, Riikka Volatile emissions from thawing permafrost soils are influenced by meltwater drainage conditions |
topic_facet |
Arctic biogenic volatile organic compounds climate change gas fluxes meltwater drainage permafrost soil ecology tundra |
description |
Vast amounts of carbon are bound in both active layer and permafrost soils in the Arctic. As a consequence of climate warming, the depth of the active layer is increasing in size and permafrost soils are thawing. We hypothesize that pulses of biogenic volatile organic compounds are released from the near-surface active layer during spring, and during late summer season from thawing permafrost, while the subsequent biogeochemical processes occurring in thawed soils also lead to emissions. Biogenic volatile organic compounds are reactive gases that have both negative and positive climate forcing impacts when introduced to the Arctic atmosphere, and the knowledge of their emission magnitude and pattern is necessary to construct reliable climate models. However, it is unclear how different ecosystems and environmental factors such as drainage conditions upon permafrost thaw affect the emission and compound composition. Here we show that incubations of frozen B horizon of the active layer and permafrost soils collected from a High Arctic heath and fen release a range of biogenic volatile organic compounds upon thaw and during subsequent incubation experiments at temperatures of 10°C and 20°C. Meltwater drainage in the fen soils increased emission rates nine times, while having no effect in the drier heath soils. Emissions generally increased with temperature, and emission profiles for the fen soils were dominated by benzenoids and alkanes, while benzenoids, ketones, and alcohols dominated in heath soils. Our results emphasize that future changes affecting the drainage conditions of the Arctic tundra will have a large influence on volatile emissions from thawing permafrost soils – particularly in wetland/fen areas. |
format |
Article in Journal/Newspaper |
author |
Kramshøj, Magnus Albers, Christian N. Svendsen, Sarah H. Björkman, Mats P. Lindwall, Frida Björk, Robert G. Rinnan, Riikka |
author_facet |
Kramshøj, Magnus Albers, Christian N. Svendsen, Sarah H. Björkman, Mats P. Lindwall, Frida Björk, Robert G. Rinnan, Riikka |
author_sort |
Kramshøj, Magnus |
title |
Volatile emissions from thawing permafrost soils are influenced by meltwater drainage conditions |
title_short |
Volatile emissions from thawing permafrost soils are influenced by meltwater drainage conditions |
title_full |
Volatile emissions from thawing permafrost soils are influenced by meltwater drainage conditions |
title_fullStr |
Volatile emissions from thawing permafrost soils are influenced by meltwater drainage conditions |
title_full_unstemmed |
Volatile emissions from thawing permafrost soils are influenced by meltwater drainage conditions |
title_sort |
volatile emissions from thawing permafrost soils are influenced by meltwater drainage conditions |
publishDate |
2019 |
url |
https://curis.ku.dk/portal/da/publications/volatile-emissions-from-thawing-permafrost-soils-are-influenced-by-meltwater-drainage-conditions(e526bb6d-90c7-467d-83e6-a4b6e9a998bd).html https://doi.org/10.1111/gcb.14582 https://curis.ku.dk/ws/files/228971787/volatile_emissions_kramsh_j_2019.pdf |
genre |
Climate change permafrost Tundra |
genre_facet |
Climate change permafrost Tundra |
op_source |
Kramshøj , M , Albers , C N , Svendsen , S H , Björkman , M P , Lindwall , F , Björk , R G & Rinnan , R 2019 , ' Volatile emissions from thawing permafrost soils are influenced by meltwater drainage conditions ' , Global Change Biology , vol. 25 , no. 5 , pp. 1704-1716 . https://doi.org/10.1111/gcb.14582 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1111/gcb.14582 |
container_title |
Global Change Biology |
container_volume |
25 |
container_issue |
5 |
container_start_page |
1704 |
op_container_end_page |
1716 |
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1796940647714783232 |