Millennial scale persistence of organic carbon bound to iron in Arctic marine sediments
Burial of organic material in marine sediments represents a dominant natural mechanism of long-term carbon sequestration globally, but critical aspects of this carbon sink remain unresolved. Investigation of surface sediments led to the proposition that on average 10-20% of sedimentary organic carbo...
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Online Access: | https://hal.science/hal-04203297 https://doi.org/10.1038/s41467-020-20550-0 |
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ftccsdartic:oai:HAL:hal-04203297v1 2023-10-09T21:48:40+02:00 Millennial scale persistence of organic carbon bound to iron in Arctic marine sediments Faust, Johan C. Tessin, Allyson Fisher, Ben J. Zindorf, Mark Sebastian Papadaki, Sonia Hendry, Katharine R. Doyle, Katherine A. März, Christian Laboratoire Environnement Profond (LEP) Etudes des Ecosystèmes Profonds (EEP) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) 2021-01 https://hal.science/hal-04203297 https://doi.org/10.1038/s41467-020-20550-0 en eng HAL CCSD Nature Publishing Group info:eu-repo/semantics/altIdentifier/doi/10.1038/s41467-020-20550-0 hal-04203297 https://hal.science/hal-04203297 doi:10.1038/s41467-020-20550-0 ISSN: 2041-1723 EISSN: 2041-1723 Nature Communications https://hal.science/hal-04203297 Nature Communications, 2021, 12 (1), 275 (9p.). ⟨10.1038/s41467-020-20550-0⟩ [SDV]Life Sciences [q-bio] info:eu-repo/semantics/article Journal articles 2021 ftccsdartic https://doi.org/10.1038/s41467-020-20550-0 2023-09-23T22:53:22Z Burial of organic material in marine sediments represents a dominant natural mechanism of long-term carbon sequestration globally, but critical aspects of this carbon sink remain unresolved. Investigation of surface sediments led to the proposition that on average 10-20% of sedimentary organic carbon is stabilised and physically protected against microbial degradation through binding to reactive metal (e.g. iron and manganese) oxides. Here we examine the long-term efficiency of this rusty carbon sink by analysing the chemical composition of sediments and pore waters from four locations in the Barents Sea. Our findings show that the carbon-iron coupling persists below the uppermost, oxygenated sediment layer over thousands of years. We further propose that authigenic coprecipitation is not the dominant factor of the carbon-iron bounding in these Arctic shelf sediments and that a substantial fraction of the organic carbon is already bound to reactive iron prior deposition on the seafloor. Article in Journal/Newspaper Arctic Barents Sea Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Arctic Barents Sea Nature Communications 12 1 |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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ftccsdartic |
language |
English |
topic |
[SDV]Life Sciences [q-bio] |
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[SDV]Life Sciences [q-bio] Faust, Johan C. Tessin, Allyson Fisher, Ben J. Zindorf, Mark Sebastian Papadaki, Sonia Hendry, Katharine R. Doyle, Katherine A. März, Christian Millennial scale persistence of organic carbon bound to iron in Arctic marine sediments |
topic_facet |
[SDV]Life Sciences [q-bio] |
description |
Burial of organic material in marine sediments represents a dominant natural mechanism of long-term carbon sequestration globally, but critical aspects of this carbon sink remain unresolved. Investigation of surface sediments led to the proposition that on average 10-20% of sedimentary organic carbon is stabilised and physically protected against microbial degradation through binding to reactive metal (e.g. iron and manganese) oxides. Here we examine the long-term efficiency of this rusty carbon sink by analysing the chemical composition of sediments and pore waters from four locations in the Barents Sea. Our findings show that the carbon-iron coupling persists below the uppermost, oxygenated sediment layer over thousands of years. We further propose that authigenic coprecipitation is not the dominant factor of the carbon-iron bounding in these Arctic shelf sediments and that a substantial fraction of the organic carbon is already bound to reactive iron prior deposition on the seafloor. |
author2 |
Laboratoire Environnement Profond (LEP) Etudes des Ecosystèmes Profonds (EEP) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) |
format |
Article in Journal/Newspaper |
author |
Faust, Johan C. Tessin, Allyson Fisher, Ben J. Zindorf, Mark Sebastian Papadaki, Sonia Hendry, Katharine R. Doyle, Katherine A. März, Christian |
author_facet |
Faust, Johan C. Tessin, Allyson Fisher, Ben J. Zindorf, Mark Sebastian Papadaki, Sonia Hendry, Katharine R. Doyle, Katherine A. März, Christian |
author_sort |
Faust, Johan C. |
title |
Millennial scale persistence of organic carbon bound to iron in Arctic marine sediments |
title_short |
Millennial scale persistence of organic carbon bound to iron in Arctic marine sediments |
title_full |
Millennial scale persistence of organic carbon bound to iron in Arctic marine sediments |
title_fullStr |
Millennial scale persistence of organic carbon bound to iron in Arctic marine sediments |
title_full_unstemmed |
Millennial scale persistence of organic carbon bound to iron in Arctic marine sediments |
title_sort |
millennial scale persistence of organic carbon bound to iron in arctic marine sediments |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://hal.science/hal-04203297 https://doi.org/10.1038/s41467-020-20550-0 |
geographic |
Arctic Barents Sea |
geographic_facet |
Arctic Barents Sea |
genre |
Arctic Barents Sea |
genre_facet |
Arctic Barents Sea |
op_source |
ISSN: 2041-1723 EISSN: 2041-1723 Nature Communications https://hal.science/hal-04203297 Nature Communications, 2021, 12 (1), 275 (9p.). ⟨10.1038/s41467-020-20550-0⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1038/s41467-020-20550-0 hal-04203297 https://hal.science/hal-04203297 doi:10.1038/s41467-020-20550-0 |
op_doi |
https://doi.org/10.1038/s41467-020-20550-0 |
container_title |
Nature Communications |
container_volume |
12 |
container_issue |
1 |
_version_ |
1779311743623757824 |