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High contribution of picophytoplankton to phytoplankton biomass in a shallow, eutrophic coastal sea
http://hdl.handle.net/10069/00041969
http://hdl.handle.net/10069/00041969b7f51f23-7edc-4696-a3af-49cd8466b9bf
名前 / ファイル | ライセンス | アクション |
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MER184_105852.pdf (1.3 MB)
Download is available from 2024/12/22.
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2023-01-17 | |||||
タイトル | ||||||
タイトル | High contribution of picophytoplankton to phytoplankton biomass in a shallow, eutrophic coastal sea | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Phytoplankton | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Picophytoplankton | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Cyanobacteria | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Hypoxia | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Coastal sea | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Isahaya bay | |||||
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 |
Takasu, Hiroyuki
× Takasu, Hiroyuki× Ikeda, Mana× Miyahara, Kotaro× Shiragaki, Tomohiro |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | We explored picophytoplankton in the surface (0 m) and bottom (2.3–8.7 m) layers of a shallow (<10 m) eutrophic coastal system (Isahaya Bay, Japan). We found that picophytoplankton (principally Synechococcus) constituted the major phytoplankton in spring and summer. The chlorophyll a (chl.a) concentration in the 0.7–2.0-μm picophytoplankton fraction (hereinafter ‘pico-sized chl. a’) and picophytoplankton abundance in Isahaya Bay were higher than those in other eutrophic coastal waters. The pico-sized chl. a concentration and the picophytoplankton abundance counted with an epifluorescence microscope was up to 49.31 μg L−1 and 1.9 × 106 cells mL−1, respectively. Higher contributions of pico-sized chl. a to the total chl. a were evident in summer (up to 63.5%), relative to spring (up to 32.1%), at both depths. Picophytoplankton abundance and the pico-sized chl. a concentration was positively correlated with water temperature and dissolved inorganic phosphorus (DIP) concentrations. Thus, both temperature and DIP may be major controllers of picophytoplankton in Isahaya Bay. The pico-sized chl. a concentration and picophytoplankton cell number at the bottom layer were positively correlated with those in the surface layer, suggesting that picophytoplankton in bottom layers may have sunk from the surface layers. The results imply that the picophytoplankton affects the biogeochemical processes in the bottom of Isahaya Bay more than previously thought. This may be true not only for this estuary but also for other eutrophic coastal seas. | |||||
書誌情報 |
Marine Environmental Research 巻 184, p. 105852, 発行日 2022-12-23 |
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出版者 | ||||||
出版者 | Elsevier Ltd | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 01411136 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1016/j.marenvres.2022.105852 | |||||
権利 | ||||||
権利情報 | ⓒ 2022 Elsevier Ltd. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/ | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
引用 | ||||||
内容記述タイプ | Other | |||||
内容記述 | Marine Environmental Research, 184, art. no. 105852; 2022 |