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親潮とその周辺水塊-捕食者からみた摂餌場の一考察
https://fra.repo.nii.ac.jp/records/2001699
https://fra.repo.nii.ac.jp/records/2001699d229f29c-8f88-4e58-a751-9edc3b7134f6
| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 公開日 | 2024-04-08 | |||||||||||
| タイトル | ||||||||||||
| タイトル | 親潮とその周辺水塊-捕食者からみた摂餌場の一考察 | |||||||||||
| 言語 | ja | |||||||||||
| タイトル | ||||||||||||
| タイトル | Oyashio and the boreal mixing zone as feeding ground for the seasonal predatory migrants | |||||||||||
| 言語 | en | |||||||||||
| 言語 | ||||||||||||
| 言語 | jpn | |||||||||||
| 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 | departmental bulletin paper | |||||||||||
| アクセス権 | ||||||||||||
| アクセス権 | metadata only access | |||||||||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||||||||
| 著者 |
河村, 章人
× 河村, 章人
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| 抄録 | ||||||||||||
| 内容記述タイプ | Abstract | |||||||||||
| 内容記述 | The ecological characteristics of the North Pacific boreal region were reviewed from the viewpoint of prey-predator relationships. The feeding ground in this region was evaluated both by the total abundance of zooplankters and the feature of their distributions. Ecosystem in the Oyasio region is a compartment closely connected with the so-called transition and/or the mixing zone with variable plankton communities. The dietary habits of the rorqual whales that migrated into this region revealed the importance of small scaled aggregations of the three Calanus species and eight species of euphausiids. Such small gregarious fishes as Japanese sardine, mackerel, and Pacific saury and so on, are also seasonal migrants to this region, and share the swarming copepods with many other nektonic predators. With its extraordinal high density of an order of x105 inds/m3 or more in swarming Calanus species, swarms of the copepods and euphausiids are especially important in the region where the abundance of zooplankton biomass being estimated by the net sampling is relatively poor. Ecologically, the swarms of such zooplankton as Calanus plumchrus, C. cristatus, Euphausia-, Thysanoessa- and Nematoscelis-groups are one of the key phenomena that induce a formation of feeding ground for the predatory migrants to this region. Importance of biological/ecological characteristics of food plankton was discussed in connection with the meandering structure of hydrography in the transitional zone which neighbours to the Oyasio waters. | |||||||||||
| 言語 | en | |||||||||||
| 書誌情報 |
ja : 北海道区水産研究所研究報告 en : Bulletin of the Hokkaido National Fisheries Research Institute 巻 55, p. 35-46, ページ数 12, 発行日 1991-03 |
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| 出版者 | ||||||||||||
| 出版者 | 北海道区水産研究所 | |||||||||||
| 言語 | ja | |||||||||||
| 出版者 | ||||||||||||
| 出版者 | Hokkaido National Fisheries Research Institute | |||||||||||
| 言語 | en | |||||||||||
| ISSN | ||||||||||||
| 収録物識別子タイプ | PISSN | |||||||||||
| 収録物識別子 | 0513-2541 | |||||||||||
| 書誌レコードID | ||||||||||||
| 収録物識別子タイプ | NCID | |||||||||||
| 収録物識別子 | AN1015410X | |||||||||||
| 情報源 | ||||||||||||
| 識別子タイプ | Local | |||||||||||
| 関連識別子 | hnf_k_55_3 | |||||||||||
| 関連サイト | ||||||||||||
| 識別子タイプ | URI | |||||||||||
| 関連識別子 | https://agriknowledge.affrc.go.jp/RN/2010501375 | |||||||||||
| 言語 | ja | |||||||||||
| 関連名称 | 日本農学文献記事索引(agriknowledge) | |||||||||||
