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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Springer Science and Business Media LLC
2021
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Online Access: | https://archimer.ifremer.fr/doc/00675/78755/80923.pdf https://archimer.ifremer.fr/doc/00675/78755/80924.pdf https://archimer.ifremer.fr/doc/00675/78755/80925.pdf https://archimer.ifremer.fr/doc/00675/78755/80926.pdf https://archimer.ifremer.fr/doc/00675/78755/80927.xlsx https://doi.org/10.1038/s41467-020-20550-0 https://archimer.ifremer.fr/doc/00675/78755/ |
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ftarchimer:oai:archimer.ifremer.fr:78755 2023-05-15T14:54:01+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 2021-01 application/pdf https://archimer.ifremer.fr/doc/00675/78755/80923.pdf https://archimer.ifremer.fr/doc/00675/78755/80924.pdf https://archimer.ifremer.fr/doc/00675/78755/80925.pdf https://archimer.ifremer.fr/doc/00675/78755/80926.pdf https://archimer.ifremer.fr/doc/00675/78755/80927.xlsx https://doi.org/10.1038/s41467-020-20550-0 https://archimer.ifremer.fr/doc/00675/78755/ eng eng Springer Science and Business Media LLC https://archimer.ifremer.fr/doc/00675/78755/80923.pdf https://archimer.ifremer.fr/doc/00675/78755/80924.pdf https://archimer.ifremer.fr/doc/00675/78755/80925.pdf https://archimer.ifremer.fr/doc/00675/78755/80926.pdf https://archimer.ifremer.fr/doc/00675/78755/80927.xlsx doi:10.1038/s41467-020-20550-0 https://archimer.ifremer.fr/doc/00675/78755/ info:eu-repo/semantics/openAccess restricted use Nature Communications (2041-1723) (Springer Science and Business Media LLC), 2021-01 , Vol. 12 , N. 1 , P. 275 (9p.) text Publication info:eu-repo/semantics/article 2021 ftarchimer https://doi.org/10.1038/s41467-020-20550-0 2021-09-23T20:36:48Z 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 Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Arctic Barents Sea Nature Communications 12 1 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
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. |
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 |
spellingShingle |
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 |
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 |
Springer Science and Business Media LLC |
publishDate |
2021 |
url |
https://archimer.ifremer.fr/doc/00675/78755/80923.pdf https://archimer.ifremer.fr/doc/00675/78755/80924.pdf https://archimer.ifremer.fr/doc/00675/78755/80925.pdf https://archimer.ifremer.fr/doc/00675/78755/80926.pdf https://archimer.ifremer.fr/doc/00675/78755/80927.xlsx https://doi.org/10.1038/s41467-020-20550-0 https://archimer.ifremer.fr/doc/00675/78755/ |
geographic |
Arctic Barents Sea |
geographic_facet |
Arctic Barents Sea |
genre |
Arctic Barents Sea |
genre_facet |
Arctic Barents Sea |
op_source |
Nature Communications (2041-1723) (Springer Science and Business Media LLC), 2021-01 , Vol. 12 , N. 1 , P. 275 (9p.) |
op_relation |
https://archimer.ifremer.fr/doc/00675/78755/80923.pdf https://archimer.ifremer.fr/doc/00675/78755/80924.pdf https://archimer.ifremer.fr/doc/00675/78755/80925.pdf https://archimer.ifremer.fr/doc/00675/78755/80926.pdf https://archimer.ifremer.fr/doc/00675/78755/80927.xlsx doi:10.1038/s41467-020-20550-0 https://archimer.ifremer.fr/doc/00675/78755/ |
op_rights |
info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1038/s41467-020-20550-0 |
container_title |
Nature Communications |
container_volume |
12 |
container_issue |
1 |
_version_ |
1766325709325729792 |