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Accumulation of humic-like fluorescent dissolved organic matter in the Japan Sea

Major fraction of marine dissolved organic matter (DOM) is biologically recalcitrant, however, the accumulation mechanism of recalcitrant DOM has not been fully understood. Here, we examine the distributions of humic-like fluorescent DOM, factions of recalcitrant DOM, and the level of apparent oxyge...

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Autores principales: Tanaka, Kazuki, Kuma, Kenshi, Hamasaki, Koji, Yamashita, Youhei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4100029/
https://www.ncbi.nlm.nih.gov/pubmed/25028129
http://dx.doi.org/10.1038/srep05292
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author Tanaka, Kazuki
Kuma, Kenshi
Hamasaki, Koji
Yamashita, Youhei
author_facet Tanaka, Kazuki
Kuma, Kenshi
Hamasaki, Koji
Yamashita, Youhei
author_sort Tanaka, Kazuki
collection PubMed
description Major fraction of marine dissolved organic matter (DOM) is biologically recalcitrant, however, the accumulation mechanism of recalcitrant DOM has not been fully understood. Here, we examine the distributions of humic-like fluorescent DOM, factions of recalcitrant DOM, and the level of apparent oxygen utilization in the Japan Sea. We find linear relationships between these parameters for the deep water (>200 m) of the Japan Sea, suggesting that fluorescent DOM is produced in situ in the Japan Sea. Furthermore, we find that the amount of fluorescent DOM at a given apparent oxygen utilization is greater in the deep water of the Japan Sea than it is in the North Pacific, where the highest level of fluorescent DOM in the open ocean was previously observed. We conclude that the repeated renewal of the deep water contributes to the accumulation of fluorescent DOM in the interior of the Japan Sea.
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spelling pubmed-41000292014-07-16 Accumulation of humic-like fluorescent dissolved organic matter in the Japan Sea Tanaka, Kazuki Kuma, Kenshi Hamasaki, Koji Yamashita, Youhei Sci Rep Article Major fraction of marine dissolved organic matter (DOM) is biologically recalcitrant, however, the accumulation mechanism of recalcitrant DOM has not been fully understood. Here, we examine the distributions of humic-like fluorescent DOM, factions of recalcitrant DOM, and the level of apparent oxygen utilization in the Japan Sea. We find linear relationships between these parameters for the deep water (>200 m) of the Japan Sea, suggesting that fluorescent DOM is produced in situ in the Japan Sea. Furthermore, we find that the amount of fluorescent DOM at a given apparent oxygen utilization is greater in the deep water of the Japan Sea than it is in the North Pacific, where the highest level of fluorescent DOM in the open ocean was previously observed. We conclude that the repeated renewal of the deep water contributes to the accumulation of fluorescent DOM in the interior of the Japan Sea. Nature Publishing Group 2014-07-16 /pmc/articles/PMC4100029/ /pubmed/25028129 http://dx.doi.org/10.1038/srep05292 Text en Copyright © 2014, Macmillan Publishers Limited. All rights reserved 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 in order to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Tanaka, Kazuki
Kuma, Kenshi
Hamasaki, Koji
Yamashita, Youhei
Accumulation of humic-like fluorescent dissolved organic matter in the Japan Sea
title Accumulation of humic-like fluorescent dissolved organic matter in the Japan Sea
title_full Accumulation of humic-like fluorescent dissolved organic matter in the Japan Sea
title_fullStr Accumulation of humic-like fluorescent dissolved organic matter in the Japan Sea
title_full_unstemmed Accumulation of humic-like fluorescent dissolved organic matter in the Japan Sea
title_short Accumulation of humic-like fluorescent dissolved organic matter in the Japan Sea
title_sort accumulation of humic-like fluorescent dissolved organic matter in the japan sea
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4100029/
https://www.ncbi.nlm.nih.gov/pubmed/25028129
http://dx.doi.org/10.1038/srep05292
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