Production of fluorescent dissolved organic matter in Arctic Ocean sediments
Little is known about the production of fluorescent dissolved organic matter (FDOM) in the anoxic oceanic sediments. In this study, sediment pore waters were sampled from four different sites in the Chukchi-East Siberian Seas area to examine the bulk dissolved organic carbon (DOC) and their optical...
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ftpubmed:oai:pubmedcentral.nih.gov:5159788 2023-05-15T15:06:01+02:00 Production of fluorescent dissolved organic matter in Arctic Ocean sediments Chen, Meilian Kim, Ji-Hoon Nam, Seung-Il Niessen, Frank Hong, Wei-Li Kang, Moo-Hee Hur, Jin 2016-12-16 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5159788/ http://www.ncbi.nlm.nih.gov/pubmed/27982085 https://doi.org/10.1038/srep39213 en eng Nature Publishing Group http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5159788/ http://www.ncbi.nlm.nih.gov/pubmed/27982085 http://dx.doi.org/10.1038/srep39213 Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ CC-BY Article Text 2016 ftpubmed https://doi.org/10.1038/srep39213 2016-12-25T01:08:54Z Little is known about the production of fluorescent dissolved organic matter (FDOM) in the anoxic oceanic sediments. In this study, sediment pore waters were sampled from four different sites in the Chukchi-East Siberian Seas area to examine the bulk dissolved organic carbon (DOC) and their optical properties. The production of FDOM, coupled with the increase of nutrients, was observed above the sulfate-methane-transition-zone (SMTZ). The presence of FDOM was concurrent with sulfate reduction and increased alkalinity (R2 > 0.96, p < 0.0001), suggesting a link to organic matter degradation. This inference was supported by the positive correlation (R2 > 0.95, p < 0.0001) between the net production of FDOM and the modeled degradation rates of particulate organic carbon sulfate reduction. The production of FDOM was more pronounced in a shallow shelf site S1 with a total net production ranging from 17.9 to 62.3 RU for different FDOM components above the SMTZ depth of ca. 4.1 mbsf, which presumably underwent more accumulation of particulate organic matter than the other three deeper sites. The sediments were generally found to be the sources of CDOM and FDOM to the overlying water column, unearthing a channel of generally bio-refractory and pre-aged DOM to the oceans. Text Arctic Arctic Ocean Chukchi PubMed Central (PMC) Arctic Arctic Ocean Scientific Reports 6 1 |
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Article Chen, Meilian Kim, Ji-Hoon Nam, Seung-Il Niessen, Frank Hong, Wei-Li Kang, Moo-Hee Hur, Jin Production of fluorescent dissolved organic matter in Arctic Ocean sediments |
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description |
Little is known about the production of fluorescent dissolved organic matter (FDOM) in the anoxic oceanic sediments. In this study, sediment pore waters were sampled from four different sites in the Chukchi-East Siberian Seas area to examine the bulk dissolved organic carbon (DOC) and their optical properties. The production of FDOM, coupled with the increase of nutrients, was observed above the sulfate-methane-transition-zone (SMTZ). The presence of FDOM was concurrent with sulfate reduction and increased alkalinity (R2 > 0.96, p < 0.0001), suggesting a link to organic matter degradation. This inference was supported by the positive correlation (R2 > 0.95, p < 0.0001) between the net production of FDOM and the modeled degradation rates of particulate organic carbon sulfate reduction. The production of FDOM was more pronounced in a shallow shelf site S1 with a total net production ranging from 17.9 to 62.3 RU for different FDOM components above the SMTZ depth of ca. 4.1 mbsf, which presumably underwent more accumulation of particulate organic matter than the other three deeper sites. The sediments were generally found to be the sources of CDOM and FDOM to the overlying water column, unearthing a channel of generally bio-refractory and pre-aged DOM to the oceans. |
format |
Text |
author |
Chen, Meilian Kim, Ji-Hoon Nam, Seung-Il Niessen, Frank Hong, Wei-Li Kang, Moo-Hee Hur, Jin |
author_facet |
Chen, Meilian Kim, Ji-Hoon Nam, Seung-Il Niessen, Frank Hong, Wei-Li Kang, Moo-Hee Hur, Jin |
author_sort |
Chen, Meilian |
title |
Production of fluorescent dissolved organic matter in Arctic Ocean sediments |
title_short |
Production of fluorescent dissolved organic matter in Arctic Ocean sediments |
title_full |
Production of fluorescent dissolved organic matter in Arctic Ocean sediments |
title_fullStr |
Production of fluorescent dissolved organic matter in Arctic Ocean sediments |
title_full_unstemmed |
Production of fluorescent dissolved organic matter in Arctic Ocean sediments |
title_sort |
production of fluorescent dissolved organic matter in arctic ocean sediments |
publisher |
Nature Publishing Group |
publishDate |
2016 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5159788/ http://www.ncbi.nlm.nih.gov/pubmed/27982085 https://doi.org/10.1038/srep39213 |
geographic |
Arctic Arctic Ocean |
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Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Chukchi |
genre_facet |
Arctic Arctic Ocean Chukchi |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5159788/ http://www.ncbi.nlm.nih.gov/pubmed/27982085 http://dx.doi.org/10.1038/srep39213 |
op_rights |
Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
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CC-BY |
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https://doi.org/10.1038/srep39213 |
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Scientific Reports |
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6 |
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1 |
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1766337687856349184 |