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トロール調査による魚類の豊度推定値の精度について
https://fra.repo.nii.ac.jp/records/2002226
https://fra.repo.nii.ac.jp/records/2002226da7fab7c-826c-4789-9660-d50fbc52b54b
| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 公開日 | 2024-04-22 | |||||||||||
| タイトル | ||||||||||||
| タイトル | トロール調査による魚類の豊度推定値の精度について | |||||||||||
| 言語 | ja | |||||||||||
| タイトル | ||||||||||||
| タイトル | Precision on the fish stock abundance estimates based on trawl survey | |||||||||||
| 言語 | en | |||||||||||
| 言語 | ||||||||||||
| 言語 | eng | |||||||||||
| 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 |
永井, 達樹
× 永井, 達樹
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| 抄録 | ||||||||||||
| 内容記述タイプ | Abstract | |||||||||||
| 内容記述 | The mean catch per tow based on trawl survey is used as an index of fish stock abaundance. The author examined the variability of catch per tow (CPT) and effectiveness of stratification based on the three trawl survey data. The results were summarized as follows : any allocations except that of Neyman was not so effective compared to simple random sampling (SRS); the coefficient of variation (C.V.) of CPT ranged from 1.0 for walleye pollock to about 3.5 for horse mackerel and shortfinned squid; from the simulation made for the latter two species with variable CPT's, a sample size of 100-200 tows seems adequate to calculate mean CPT's in linear scale which are used as abundance indices for usually occurring species; taking it into account that the number of tows (n) are generally limited within the range of 100-200 due to man-power and etc., the precision of abundance estimates (D=C.V./ √n) mostly depends on C.V. under SRS; in case of C.V. being equivalent to 1, the 95% confidence intervals of 100 (200) tows, i.e.,±20% (±14%) of the abundance estimate, are fairly usable for management purpose. | |||||||||||
| 言語 | en | |||||||||||
| 書誌情報 |
ja : 遠洋水産研究所研究報告 en : Bulletin, Far Seas Fisheries Research Laboratry 巻 26, p. 13-20, ページ数 8, 発行日 1989-03 |
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| 出版者 | ||||||||||||
| 出版者 | 遠洋水産研究所 | |||||||||||
| 言語 | ja | |||||||||||
| 出版者 | ||||||||||||
| 出版者 | Far Seas Fisheries Research Laboratry | |||||||||||
| 言語 | en | |||||||||||
| ISSN | ||||||||||||
| 収録物識別子タイプ | PISSN | |||||||||||
| 収録物識別子 | 0386-7285 | |||||||||||
| 書誌レコードID | ||||||||||||
| 収録物識別子タイプ | NCID | |||||||||||
| 収録物識別子 | AN00025949 | |||||||||||
| 情報源 | ||||||||||||
| 識別子タイプ | Local | |||||||||||
| 関連識別子 | enyo_k_26-13 | |||||||||||
| 関連サイト | ||||||||||||
| 識別子タイプ | URI | |||||||||||
| 関連識別子 | https://agriknowledge.affrc.go.jp/RN/2010430363 | |||||||||||
| 関連名称 | 日本農学文献記事索引 （AgriKnowledge） | |||||||||||
