Evidence for late winter biogeochemical connectivity in permafrost soils
The permafrost active layer is a key supplier of soil organic carbon and mineral nutrients to Arctic rivers. In the active layer, sites of soil-water exchange are locations for organic carbon and nutrient mobilization. Previously these sites were considered as connected during summer months and isol...
Published in: | Communications Earth & Environment |
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Language: | English |
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Springer Science and Business Media LLC
2023
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Online Access: | http://hdl.handle.net/2078.1/273814 https://doi.org/10.1038/s43247-023-00740-6 |
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ftunivlouvain:oai:dial.uclouvain.be:boreal:273814 2024-05-19T07:35:40+00:00 Evidence for late winter biogeochemical connectivity in permafrost soils Hirst, Catherine Monhonval, Arthur Mauclet, Elisabeth Thomas, Maxime Villani, Maëlle Ledman, Justin Schuur, Edward. A. G. Opfergelt, Sophie UCL - SST/ELI/ELIE - Environmental Sciences 2023 http://hdl.handle.net/2078.1/273814 https://doi.org/10.1038/s43247-023-00740-6 eng eng Springer Science and Business Media LLC info:eu-repo/grantAgreement/European Research Council (ERC)/European Union’s Horizon 2020 research and innovation programme/WeThaw info:eu-repo/grantAgreement/FNRS/Fonds National de la Recherche Scientifique/FC69480 boreal:273814 http://hdl.handle.net/2078.1/273814 doi:10.1038/s43247-023-00740-6 urn:EISSN:2662-4435 info:eu-repo/semantics/openAccess Communications Earth & Environment, Vol. 4, no. 1 (2023) (2023) permafrost silicon colloids arctic snowmelt early season info:eu-repo/semantics/article 2023 ftunivlouvain https://doi.org/10.1038/s43247-023-00740-6 2024-04-30T23:32:17Z The permafrost active layer is a key supplier of soil organic carbon and mineral nutrients to Arctic rivers. In the active layer, sites of soil-water exchange are locations for organic carbon and nutrient mobilization. Previously these sites were considered as connected during summer months and isolated during winter months. Whether soil pore waters in active layer soils are connected during shoulder seasons is poorly understood. In this study, exceptionally heavy silicon isotope compositions in soil pore waters show that during late winter, there is no connection between isolated pockets of soil pore water in soils with a shallow active layer. However, lighter silicon isotope compositions in soil pore waters reveal that soils are biogeochemically connected for longer than previously considered in soils with a deeper active layer. We show that an additional 21% of the 0–1 m soil organic carbon stock is exposed to soil - water exchange. This marks a hot moment during a dormant season, and an engine for organic carbon transport from active layer soils. Our findings mark the starting point to locate earlier pathways for biogeochemical connectivity, which need to be urgently monitored to quantify the seasonal flux of organic carbon released from permafrost soils. Article in Journal/Newspaper Arctic permafrost DIAL@UCLouvain (Université catholique de Louvain) Communications Earth & Environment 4 1 |
institution |
Open Polar |
collection |
DIAL@UCLouvain (Université catholique de Louvain) |
op_collection_id |
ftunivlouvain |
language |
English |
topic |
permafrost silicon colloids arctic snowmelt early season |
spellingShingle |
permafrost silicon colloids arctic snowmelt early season Hirst, Catherine Monhonval, Arthur Mauclet, Elisabeth Thomas, Maxime Villani, Maëlle Ledman, Justin Schuur, Edward. A. G. Opfergelt, Sophie Evidence for late winter biogeochemical connectivity in permafrost soils |
topic_facet |
permafrost silicon colloids arctic snowmelt early season |
description |
The permafrost active layer is a key supplier of soil organic carbon and mineral nutrients to Arctic rivers. In the active layer, sites of soil-water exchange are locations for organic carbon and nutrient mobilization. Previously these sites were considered as connected during summer months and isolated during winter months. Whether soil pore waters in active layer soils are connected during shoulder seasons is poorly understood. In this study, exceptionally heavy silicon isotope compositions in soil pore waters show that during late winter, there is no connection between isolated pockets of soil pore water in soils with a shallow active layer. However, lighter silicon isotope compositions in soil pore waters reveal that soils are biogeochemically connected for longer than previously considered in soils with a deeper active layer. We show that an additional 21% of the 0–1 m soil organic carbon stock is exposed to soil - water exchange. This marks a hot moment during a dormant season, and an engine for organic carbon transport from active layer soils. Our findings mark the starting point to locate earlier pathways for biogeochemical connectivity, which need to be urgently monitored to quantify the seasonal flux of organic carbon released from permafrost soils. |
author2 |
UCL - SST/ELI/ELIE - Environmental Sciences |
format |
Article in Journal/Newspaper |
author |
Hirst, Catherine Monhonval, Arthur Mauclet, Elisabeth Thomas, Maxime Villani, Maëlle Ledman, Justin Schuur, Edward. A. G. Opfergelt, Sophie |
author_facet |
Hirst, Catherine Monhonval, Arthur Mauclet, Elisabeth Thomas, Maxime Villani, Maëlle Ledman, Justin Schuur, Edward. A. G. Opfergelt, Sophie |
author_sort |
Hirst, Catherine |
title |
Evidence for late winter biogeochemical connectivity in permafrost soils |
title_short |
Evidence for late winter biogeochemical connectivity in permafrost soils |
title_full |
Evidence for late winter biogeochemical connectivity in permafrost soils |
title_fullStr |
Evidence for late winter biogeochemical connectivity in permafrost soils |
title_full_unstemmed |
Evidence for late winter biogeochemical connectivity in permafrost soils |
title_sort |
evidence for late winter biogeochemical connectivity in permafrost soils |
publisher |
Springer Science and Business Media LLC |
publishDate |
2023 |
url |
http://hdl.handle.net/2078.1/273814 https://doi.org/10.1038/s43247-023-00740-6 |
genre |
Arctic permafrost |
genre_facet |
Arctic permafrost |
op_source |
Communications Earth & Environment, Vol. 4, no. 1 (2023) (2023) |
op_relation |
info:eu-repo/grantAgreement/European Research Council (ERC)/European Union’s Horizon 2020 research and innovation programme/WeThaw info:eu-repo/grantAgreement/FNRS/Fonds National de la Recherche Scientifique/FC69480 boreal:273814 http://hdl.handle.net/2078.1/273814 doi:10.1038/s43247-023-00740-6 urn:EISSN:2662-4435 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1038/s43247-023-00740-6 |
container_title |
Communications Earth & Environment |
container_volume |
4 |
container_issue |
1 |
_version_ |
1799474486276259840 |