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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Online Access: | https://epic.awi.de/id/eprint/42881/ http://www.nature.com/articles/srep39213 https://hdl.handle.net/10013/epic.49567 |
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ftawi:oai:epic.awi.de:42881 2024-09-15T17:51:07+00:00 Production of fluorescent dissolved organic matter in Arctic Ocean sediments Chen, Meilian Kim, Ji-Hoon Nam, Seung-Ill Niessen, Frank Hong, Wei-Li Kang, Moo-Hee Hur, Jin 2016-12-16 https://epic.awi.de/id/eprint/42881/ http://www.nature.com/articles/srep39213 https://hdl.handle.net/10013/epic.49567 unknown Springer Nature Chen, M. , Kim, J. H. , Nam, S. I. , Niessen, F. orcid:0000-0001-6453-0594 , Hong, W. L. , Kang, M. H. and Hur, J. (2016) Production of fluorescent dissolved organic matter in Arctic Ocean sediments , Scientific Reports, (39213), pp. 1-10 . doi:10.1038/srep39213 <https://doi.org/10.1038/srep39213> , hdl:10013/epic.49567 EPIC3Scientific Reports, Springer Nature, (39213), pp. 1-10 Article isiRev 2016 ftawi https://doi.org/10.1038/srep39213 2024-06-24T04:16:35Z 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. Article in Journal/Newspaper Arctic Arctic Ocean Chukchi Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Scientific Reports 6 1 |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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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 |
Article in Journal/Newspaper |
author |
Chen, Meilian Kim, Ji-Hoon Nam, Seung-Ill Niessen, Frank Hong, Wei-Li Kang, Moo-Hee Hur, Jin |
spellingShingle |
Chen, Meilian Kim, Ji-Hoon Nam, Seung-Ill Niessen, Frank Hong, Wei-Li Kang, Moo-Hee Hur, Jin Production of fluorescent dissolved organic matter in Arctic Ocean sediments |
author_facet |
Chen, Meilian Kim, Ji-Hoon Nam, Seung-Ill 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 |
Springer Nature |
publishDate |
2016 |
url |
https://epic.awi.de/id/eprint/42881/ http://www.nature.com/articles/srep39213 https://hdl.handle.net/10013/epic.49567 |
genre |
Arctic Arctic Ocean Chukchi |
genre_facet |
Arctic Arctic Ocean Chukchi |
op_source |
EPIC3Scientific Reports, Springer Nature, (39213), pp. 1-10 |
op_relation |
Chen, M. , Kim, J. H. , Nam, S. I. , Niessen, F. orcid:0000-0001-6453-0594 , Hong, W. L. , Kang, M. H. and Hur, J. (2016) Production of fluorescent dissolved organic matter in Arctic Ocean sediments , Scientific Reports, (39213), pp. 1-10 . doi:10.1038/srep39213 <https://doi.org/10.1038/srep39213> , hdl:10013/epic.49567 |
op_doi |
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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1810292934826786816 |