Supplementary material from "Does Arctic warming reduce preservation of organic matter in Barents Sea sediments?"
Over the last few decades, the Barents Sea experienced substantial warming, an expansion of relatively warm Atlantic water and a reduction in sea ice cover. This environmental change forces the entire Barents Sea ecosystem to adapt and restructure and therefore changes in pelagic–benthic coupling, o...
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ftdatacite:10.6084/m9.figshare.c.5056733 2023-05-15T14:54:50+02:00 Supplementary material from "Does Arctic warming reduce preservation of organic matter in Barents Sea sediments?" Faust, Johan C. Stevenson, Mark A. Abbott, Geoffrey D. Knies, Jochen Tessin, Allyson Mannion, Isobel Ailbe Ford Hilton, Robert Peakall, Jeffrey März, Christian 2020 https://dx.doi.org/10.6084/m9.figshare.c.5056733 https://rs.figshare.com/collections/Supplementary_material_from_Does_Arctic_warming_reduce_preservation_of_organic_matter_in_Barents_Sea_sediments_/5056733 unknown The Royal Society https://dx.doi.org/10.1098/rsta.2019.0364 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode CC-BY-4.0 CC-BY Geology FOS Earth and related environmental sciences Geochemistry Collection article 2020 ftdatacite https://doi.org/10.6084/m9.figshare.c.5056733 https://doi.org/10.1098/rsta.2019.0364 2021-11-05T12:55:41Z Over the last few decades, the Barents Sea experienced substantial warming, an expansion of relatively warm Atlantic water and a reduction in sea ice cover. This environmental change forces the entire Barents Sea ecosystem to adapt and restructure and therefore changes in pelagic–benthic coupling, organic matter sedimentation and long-term carbon sequestration are expected. Here we combine new and existing organic and inorganic geochemical surface sediment data from the western Barents Sea and show a clear link between the modern ecosystem structure, sea ice cover and the organic carbon and CaCO 3 contents in Barents Sea surface sediments. Furthermore, we discuss the sources of total and reactive iron phases and evaluate the spatial distribution of organic carbon bound to reactive iron. Consistent with a recent global estimate we find that on average 21.0 ± 8.3 per cent of the total organic carbon is associated to reactive iron (fOC-Fe R ) in Barents Sea surface sediments. The spatial distribution of fOC-Fe R , however, seems to be unrelated to sea ice cover, Atlantic water inflow or proximity to land. Future Arctic warming might, therefore, neither increase nor decrease the burial rates of iron-associated organic carbon. However, our results also imply that ongoing sea ice reduction and the associated alteration of vertical carbon fluxes might cause accompanied shifts in the Barents Sea surface sedimentary organic carbon content, which might result in overall reduced carbon sequestration in the future.This article is part of the theme issue ‘The Changing Arctic Ocean: consequences for biological communities, biogeochemical processes and ecosystems’. Article in Journal/Newspaper Arctic Arctic Ocean Barents Sea Sea ice DataCite Metadata Store (German National Library of Science and Technology) Arctic Arctic Ocean Barents Sea |
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DataCite Metadata Store (German National Library of Science and Technology) |
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topic |
Geology FOS Earth and related environmental sciences Geochemistry |
spellingShingle |
Geology FOS Earth and related environmental sciences Geochemistry Faust, Johan C. Stevenson, Mark A. Abbott, Geoffrey D. Knies, Jochen Tessin, Allyson Mannion, Isobel Ailbe Ford Hilton, Robert Peakall, Jeffrey März, Christian Supplementary material from "Does Arctic warming reduce preservation of organic matter in Barents Sea sediments?" |
topic_facet |
Geology FOS Earth and related environmental sciences Geochemistry |
description |
Over the last few decades, the Barents Sea experienced substantial warming, an expansion of relatively warm Atlantic water and a reduction in sea ice cover. This environmental change forces the entire Barents Sea ecosystem to adapt and restructure and therefore changes in pelagic–benthic coupling, organic matter sedimentation and long-term carbon sequestration are expected. Here we combine new and existing organic and inorganic geochemical surface sediment data from the western Barents Sea and show a clear link between the modern ecosystem structure, sea ice cover and the organic carbon and CaCO 3 contents in Barents Sea surface sediments. Furthermore, we discuss the sources of total and reactive iron phases and evaluate the spatial distribution of organic carbon bound to reactive iron. Consistent with a recent global estimate we find that on average 21.0 ± 8.3 per cent of the total organic carbon is associated to reactive iron (fOC-Fe R ) in Barents Sea surface sediments. The spatial distribution of fOC-Fe R , however, seems to be unrelated to sea ice cover, Atlantic water inflow or proximity to land. Future Arctic warming might, therefore, neither increase nor decrease the burial rates of iron-associated organic carbon. However, our results also imply that ongoing sea ice reduction and the associated alteration of vertical carbon fluxes might cause accompanied shifts in the Barents Sea surface sedimentary organic carbon content, which might result in overall reduced carbon sequestration in the future.This article is part of the theme issue ‘The Changing Arctic Ocean: consequences for biological communities, biogeochemical processes and ecosystems’. |
format |
Article in Journal/Newspaper |
author |
Faust, Johan C. Stevenson, Mark A. Abbott, Geoffrey D. Knies, Jochen Tessin, Allyson Mannion, Isobel Ailbe Ford Hilton, Robert Peakall, Jeffrey März, Christian |
author_facet |
Faust, Johan C. Stevenson, Mark A. Abbott, Geoffrey D. Knies, Jochen Tessin, Allyson Mannion, Isobel Ailbe Ford Hilton, Robert Peakall, Jeffrey März, Christian |
author_sort |
Faust, Johan C. |
title |
Supplementary material from "Does Arctic warming reduce preservation of organic matter in Barents Sea sediments?" |
title_short |
Supplementary material from "Does Arctic warming reduce preservation of organic matter in Barents Sea sediments?" |
title_full |
Supplementary material from "Does Arctic warming reduce preservation of organic matter in Barents Sea sediments?" |
title_fullStr |
Supplementary material from "Does Arctic warming reduce preservation of organic matter in Barents Sea sediments?" |
title_full_unstemmed |
Supplementary material from "Does Arctic warming reduce preservation of organic matter in Barents Sea sediments?" |
title_sort |
supplementary material from "does arctic warming reduce preservation of organic matter in barents sea sediments?" |
publisher |
The Royal Society |
publishDate |
2020 |
url |
https://dx.doi.org/10.6084/m9.figshare.c.5056733 https://rs.figshare.com/collections/Supplementary_material_from_Does_Arctic_warming_reduce_preservation_of_organic_matter_in_Barents_Sea_sediments_/5056733 |
geographic |
Arctic Arctic Ocean Barents Sea |
geographic_facet |
Arctic Arctic Ocean Barents Sea |
genre |
Arctic Arctic Ocean Barents Sea Sea ice |
genre_facet |
Arctic Arctic Ocean Barents Sea Sea ice |
op_relation |
https://dx.doi.org/10.1098/rsta.2019.0364 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode CC-BY-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.c.5056733 https://doi.org/10.1098/rsta.2019.0364 |
_version_ |
1766326589042196480 |