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Geographic Variation of Particle Size Distribution in the Kuroshio Region: Possible Causes in the Upper Water Column
https://oist.repo.nii.ac.jp/records/2417
https://oist.repo.nii.ac.jp/records/24176e431ea5-0750-473e-b93e-376865d8ffc5
名前 / ファイル | ライセンス | アクション |
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fmars-08-768766 (7.7 MB)
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Creative Commons Attribution 4.0 International(https://creativecommons.org/licenses/by/4.0/)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2021-12-13 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Geographic Variation of Particle Size Distribution in the Kuroshio Region: Possible Causes in the Upper Water Column | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | slope of particle size distribution | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | chlorophyll a | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | transparent exopolymer particles (TEP) | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Kuroshio | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | nanophytoplankton | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | particle aggregation | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者(英) |
Yamada, Yosuke
× Yamada, Yosuke× Fukuda, Hideki× Umezawa, Yu× Nagata, Toshi |
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書誌情報 |
en : Frontiers in Marine Science 巻 8, p. 768766, 発行日 2021-11-16 |
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抄録 | ||||||
内容記述タイプ | Other | |||||
内容記述 | Particle size distribution (PSD) in the ocean is a fundamental property that influences carbon export and food webs; however, PSD variation and its causes in oligotrophic oceans are not entirely clear. Here, we used Laser In-Situ Scattering and Transmissometry to investigate PSD (size range 5.2–119 μm) and related variables at 11 stations in the surface layer (0–20 m) of the Kuroshio region of the western North Pacific, where strong current causes dynamic hydrographic and ecological conditions. PSD slopes (range –3.2 to –4.2), derived from the power law model, were steeper at onshore stations and flatter at oligotrophic stations located offshore and at lower latitudes. Notably, slopes tended to become steeper with increasing chlorophyll a concentration, opposing the generally observed relationship between the two variables, whereas they became flatter with increasing transparent exopolymer particle (TEP) concentration. Possible explanations of the above results are localized occurrence of nanophytoplankton and TEP facilitation of particle aggregation. The results support the hypothesis that PSD slopes are controlled by a multitude of factors, including phytoplankton community dynamics and aggregation processes. To determine whether TEP-induced particle aggregation enhances or suppresses carbon export, we need a better understanding of the nature (porosity, density, and sinking velocity) of aggregates in oligotrophic oceans. | |||||
出版者 | ||||||
出版者 | Frontiers Media S.A. | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 2296-7745 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.3389/fmars.2021.768766 | |||||
権利 | ||||||
権利情報 | © 2021 Yamada, Fukuda, Umezawa and Nagata. | |||||
関連サイト | ||||||
識別子タイプ | URI | |||||
関連識別子 | https://www.frontiersin.org/articles/10.3389/fmars.2021.768766/full | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 |