Millennial scale persistence of organic carbon bound to iron in Arctic marine sediments
Abstract 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 orga...
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2021
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Online Access: | http://dx.doi.org/10.1038/s41467-020-20550-0 http://www.nature.com/articles/s41467-020-20550-0.pdf http://www.nature.com/articles/s41467-020-20550-0 |
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crspringernat:10.1038/s41467-020-20550-0 2023-05-15T14:55:18+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 Papadaki, Sonia Hendry, Katharine R. Doyle, Katherine A. März, Christian RCUK | Natural Environment Research Council 2021 http://dx.doi.org/10.1038/s41467-020-20550-0 http://www.nature.com/articles/s41467-020-20550-0.pdf http://www.nature.com/articles/s41467-020-20550-0 en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Nature Communications volume 12, issue 1 ISSN 2041-1723 General Physics and Astronomy General Biochemistry, Genetics and Molecular Biology General Chemistry journal-article 2021 crspringernat https://doi.org/10.1038/s41467-020-20550-0 2022-01-04T16:31:05Z Abstract 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 Springer Nature (via Crossref) Arctic Barents Sea Nature Communications 12 1 |
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Springer Nature (via Crossref) |
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English |
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General Physics and Astronomy General Biochemistry, Genetics and Molecular Biology General Chemistry |
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General Physics and Astronomy General Biochemistry, Genetics and Molecular Biology General Chemistry Faust, Johan C. Tessin, Allyson Fisher, Ben J. Zindorf, Mark Papadaki, Sonia Hendry, Katharine R. Doyle, Katherine A. März, Christian Millennial scale persistence of organic carbon bound to iron in Arctic marine sediments |
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General Physics and Astronomy General Biochemistry, Genetics and Molecular Biology General Chemistry |
description |
Abstract 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 |
RCUK | Natural Environment Research Council |
format |
Article in Journal/Newspaper |
author |
Faust, Johan C. Tessin, Allyson Fisher, Ben J. Zindorf, Mark Papadaki, Sonia Hendry, Katharine R. Doyle, Katherine A. März, Christian |
author_facet |
Faust, Johan C. Tessin, Allyson Fisher, Ben J. Zindorf, Mark 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 |
http://dx.doi.org/10.1038/s41467-020-20550-0 http://www.nature.com/articles/s41467-020-20550-0.pdf http://www.nature.com/articles/s41467-020-20550-0 |
geographic |
Arctic Barents Sea |
geographic_facet |
Arctic Barents Sea |
genre |
Arctic Barents Sea |
genre_facet |
Arctic Barents Sea |
op_source |
Nature Communications volume 12, issue 1 ISSN 2041-1723 |
op_rights |
https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41467-020-20550-0 |
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Nature Communications |
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12 |
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1 |
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1766327090402033664 |