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Drastic changes in a lower-trophic-level ecosystem attributed to unprecedented harmful algal outbreaks in 2021 on the Pacific shelf off southeast Hokkaido, Japan
https://fra.repo.nii.ac.jp/records/2001505
https://fra.repo.nii.ac.jp/records/2001505c79005a9-2134-486c-b3bf-a4c4824dfcbe
| 名前 / ファイル | ライセンス | アクション |
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Taniuchi et al Drastic changes in a lower trophic level ecosystem.pdf (1.4 MB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||||||||
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| 公開日 | 2024-03-18 | |||||||||||
| タイトル | ||||||||||||
| タイトル | Drastic changes in a lower-trophic-level ecosystem attributed to unprecedented harmful algal outbreaks in 2021 on the Pacific shelf off southeast Hokkaido, Japan | |||||||||||
| 言語 | en | |||||||||||
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| 言語 | eng | |||||||||||
| キーワード | ||||||||||||
| 言語 | en | |||||||||||
| 主題Scheme | Other | |||||||||||
| 主題 | Harmful algal bloom; Karenia selliformis; Phytoplankton community; Nutrients | |||||||||||
| 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 |
谷内, 由貴子
× 谷内, 由貴子× 渡辺, 剛× 東屋, 知範× 髙木, 聖実× 葛西, 広海× 中野渡, 拓也
WEKO
1013
× 大西, 拓也× 筧, 茂穂× 黒田, 寛 |
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| 抄録 | ||||||||||||
| 内容記述タイプ | Abstract | |||||||||||
| 内容記述 | Unprecedented, large-scale harmful algal blooms (HABs) occurred in Pacific coastal shelf waters off the southeastern coast of Hokkaido, Japan, in the autumn of 2021. To understand how these HABs, composed primarily of Karenia selliformis, changed the structures of lower-trophic-level ecosystems in shelf waters, we analyzed high-resolution in situ ship measurements taken during October 2015–2021. We mainly compared physico-biochemical variables averaged over the shelf in 2021 and in 2015–2020. Chlorophyll-a concentrations at a depth of 10 m were approximately 2.3-fold higher in 2021 than in 2015–2020. Chlorophyll-a concentrations were highest at the sea surface in 2021, and vertically integrated concentrations were 1.8-fold higher in 2021 than in 2015–2020. Silicate concentrations at a depth of 10 m were higher in 2021, whereas nitrate and phosphate concentrations were largely the same. Abundances of major diatoms and picophytoplankton (e.g., Synechococcus spp.) at a depth of 10 m declined by 2 orders and 1 order of magnitude in 2021, respectively, whereas Karenia spp. abundance greatly increased. These results indicated that outbreaks of K. selliformis suppressed the growth of other algal species and dramatically changed nutrient flows and balances in the coastal shelf ecosystem. The suppression of non-Karenia algal species might have occurred through interspecific competition for nutrients as well as allelopathy and/or mixotrophy by K. selliformis. | |||||||||||
| 言語 | en | |||||||||||
| 書誌情報 |
en : Continental Shelf Research 巻 267, p. 105114, 発行日 2023-09-15 |
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| 出版者 | ||||||||||||
| 出版者 | Elsevier | |||||||||||
| 言語 | en | |||||||||||
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| 収録物識別子タイプ | PISSN | |||||||||||
| 収録物識別子 | 0278-4343 | |||||||||||
| DOI | ||||||||||||
| 関連タイプ | isIdenticalTo | |||||||||||
| 識別子タイプ | DOI | |||||||||||
| 関連識別子 | 10.1016/j.csr.2023.105114 | |||||||||||
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| 関連タイプ | isIdenticalTo | |||||||||||
| 識別子タイプ | Local | |||||||||||
| 関連識別子 | 23235005 | |||||||||||
| 言語 | ja | |||||||||||
| 関連名称 | 水産資源研究所 水産資源研究センター 海洋環境部 | |||||||||||
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| 関連タイプ | isIdenticalTo | |||||||||||
| 識別子タイプ | URI | |||||||||||
| 関連識別子 | https://www.sciencedirect.com/science/article/pii/S0278434323001917 | |||||||||||
| 言語 | en | |||||||||||
| 関連名称 | Elsevier : Continental Shelf Research | |||||||||||
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| 出版タイプ | VoR | |||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||||
