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Preliminary report on the FIBEX acoustic work to estimate the abundance of Euphausia superba
https://nipr.repo.nii.ac.jp/records/1441
https://nipr.repo.nii.ac.jp/records/14414c5003bc-2197-43db-8de8-f2abe56e577d
名前 / ファイル | ライセンス | アクション |
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KJ00000012075.pdf (1.9 MB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||||
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公開日 | 1983-07-01 | |||||||
タイトル | ||||||||
言語 | en | |||||||
タイトル | Preliminary report on the FIBEX acoustic work to estimate the abundance of Euphausia superba | |||||||
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 | |||||||
ページ属性 | ||||||||
内容記述タイプ | Other | |||||||
内容記述 | P(論文) | |||||||
著者名(英) |
Hampton, Ian
× Hampton, Ian
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著者所属(英) | ||||||||
en | ||||||||
Sea Fisheries Institute, Department of Agriculture and Fisheries | ||||||||
抄録(英) | ||||||||
内容記述タイプ | Other | |||||||
内容記述 | The FIBEX acoustic work to estimate the abundance of krill (Euphausia superba) is briefly reported. A multi-ship echo integrator survey was carried out in three separate areas of the Southern Ocean, totalling about 1.3 million square nautical miles. Communal analysis of the data at an international data workshop indicated a total abundance of about 78 million t in these areas, giving a mean density of 17.5g per square metre. The standard deviation was estimated as 19.5 million t, taking only the survey variance into account. Of particular interest was the apparent finding of the major portion of the biomass between 60°and 80°E, rather than in the Scotia Sea/Antarctic Peninsula region. It is stressed, however, that the results of the workshop are preliminary, and must be checked against estimates made by the individual FIBEX participants in their own areas. On the basis of the workshop results and previous knowledge on the large-scale distribution of the species, the total krill biomass at the time of the survey is tentatively estimated to have been between 200 and 600 million t. | |||||||
雑誌書誌ID | ||||||||
収録物識別子タイプ | NCID | |||||||
収録物識別子 | AA00733561 | |||||||
書誌情報 |
Memoirs of National Institute of Polar Research. Special issue 巻 27, p. 165-175, 発行日 1983-07 |