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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2021
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Online Access: | https://hdl.handle.net/1983/bf9455b5-58d7-4a66-a91a-b51fab606437 https://research-information.bris.ac.uk/en/publications/bf9455b5-58d7-4a66-a91a-b51fab606437 https://doi.org/10.1038/s41467-020-20550-0 https://research-information.bris.ac.uk/ws/files/272694977/s41467_020_20550_0.pdf |
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ftubristolcris:oai:research-information.bris.ac.uk:publications/bf9455b5-58d7-4a66-a91a-b51fab606437 2024-05-19T07:33:15+00:00 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 2021-01-12 application/pdf https://hdl.handle.net/1983/bf9455b5-58d7-4a66-a91a-b51fab606437 https://research-information.bris.ac.uk/en/publications/bf9455b5-58d7-4a66-a91a-b51fab606437 https://doi.org/10.1038/s41467-020-20550-0 https://research-information.bris.ac.uk/ws/files/272694977/s41467_020_20550_0.pdf eng eng https://research-information.bris.ac.uk/en/publications/bf9455b5-58d7-4a66-a91a-b51fab606437 info:eu-repo/semantics/openAccess Faust , J C , Tessin , A , Fisher , B J , Zindorf , M , Papadaki , S , Hendry , K R , Doyle , K A & März , C 2021 , ' Millennial scale persistence of organic carbon bound to iron in Arctic marine sediments ' , Nature Communications , vol. 12 , no. 1 , 275 (2021) . https://doi.org/10.1038/s41467-020-20550-0 Barents Sea geochemical sediment composition carbon cycle Arctic Ocean pore water chemistry reactive iron and manganese redox boundary article 2021 ftubristolcris https://doi.org/10.1038/s41467-020-20550-0 2024-04-24T00:04:30Z 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 Arctic Arctic Ocean Barents Sea University of Bristol: Bristol Research Nature Communications 12 1 |
institution |
Open Polar |
collection |
University of Bristol: Bristol Research |
op_collection_id |
ftubristolcris |
language |
English |
topic |
Barents Sea geochemical sediment composition carbon cycle Arctic Ocean pore water chemistry reactive iron and manganese redox boundary |
spellingShingle |
Barents Sea geochemical sediment composition carbon cycle Arctic Ocean pore water chemistry reactive iron and manganese redox boundary 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 |
topic_facet |
Barents Sea geochemical sediment composition carbon cycle Arctic Ocean pore water chemistry reactive iron and manganese redox boundary |
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 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 |
publishDate |
2021 |
url |
https://hdl.handle.net/1983/bf9455b5-58d7-4a66-a91a-b51fab606437 https://research-information.bris.ac.uk/en/publications/bf9455b5-58d7-4a66-a91a-b51fab606437 https://doi.org/10.1038/s41467-020-20550-0 https://research-information.bris.ac.uk/ws/files/272694977/s41467_020_20550_0.pdf |
genre |
Arctic Arctic Arctic Ocean Barents Sea |
genre_facet |
Arctic Arctic Arctic Ocean Barents Sea |
op_source |
Faust , J C , Tessin , A , Fisher , B J , Zindorf , M , Papadaki , S , Hendry , K R , Doyle , K A & März , C 2021 , ' Millennial scale persistence of organic carbon bound to iron in Arctic marine sediments ' , Nature Communications , vol. 12 , no. 1 , 275 (2021) . https://doi.org/10.1038/s41467-020-20550-0 |
op_relation |
https://research-information.bris.ac.uk/en/publications/bf9455b5-58d7-4a66-a91a-b51fab606437 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1038/s41467-020-20550-0 |
container_title |
Nature Communications |
container_volume |
12 |
container_issue |
1 |
_version_ |
1799471328595542016 |