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

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Title: Accumulation of humic-like fluorescent dissolved organic matter in the Japan Sea
Authors: Tanaka, Kazuki Browse this author
Kuma, Kenshi Browse this author →KAKEN DB
Hamasaki, Koji Browse this author →KAKEN DB
Yamashita, Youhei Browse this author →KAKEN DB
Issue Date: 16-Jul-2014
Publisher: Nature Publishing Group
Journal Title: Scientific Reports
Volume: 4
Start Page: 5292
Publisher DOI: 10.1038/srep05292
Abstract: 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.
Rights: http://creativecommons.org/licenses/by/4.0/
Type: article
URI: http://hdl.handle.net/2115/56849
Appears in Collections:環境科学院・地球環境科学研究院 (Graduate School of Environmental Science / Faculty of Environmental Earth Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 山下 洋平

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