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MACROZOOPLANKTON DISTRIBUTION AROUND THE ANTARCTIC DIVERGENCE OFF WILKES LAND IN THE 1996 AUSTRAL SUMMER : WITH REFERENCE TO HIGH ABUNDANCE OF SALPA THOMPSONI (19th Symposium on Polar Biology)
https://doi.org/10.15094/00005362
https://doi.org/10.15094/0000536229db3666-3997-48de-a79c-cae5a298f4cc
名前 / ファイル | ライセンス | アクション |
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KJ00000767705 (2.5 MB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 1998-02-01 | |||||
タイトル | ||||||
タイトル | MACROZOOPLANKTON DISTRIBUTION AROUND THE ANTARCTIC DIVERGENCE OFF WILKES LAND IN THE 1996 AUSTRAL SUMMER : WITH REFERENCE TO HIGH ABUNDANCE OF SALPA THOMPSONI (19th Symposium on Polar Biology) | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | macrozooplankton | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | distribution | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Antarctic Divergence | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Wilkes Land | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Salpa thompsom | |||||
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 | |||||
ID登録 | ||||||
ID登録 | 10.15094/00005362 | |||||
ID登録タイプ | JaLC | |||||
ページ属性 | ||||||
内容記述タイプ | Other | |||||
内容記述 | P(論文) | |||||
記事種別(英) | ||||||
en | ||||||
Proceeding | ||||||
論文名よみ | ||||||
その他のタイトル | MACROZOOPLANKTON DISTRIBUTION AROUND THE ANTARCTIC DIVERGENCE OFF WILKES LAND IN THE 1996 AUSTRAL SUMMER : WITH REFERENCE TO HIGH ABUNDANCE OF SALPA THOMPSONI (19th Symposium on Polar Biology) | |||||
著者名よみ |
チバ, サナエ
× チバ, サナエ× ホリモト, ナホ× サトウ, リキ× ヤマグチ, ユクヤ× イシマル, タカシ |
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著者名(英) |
CHIBA, Sanae
× CHIBA, Sanae× HORIMOTO, Naho× SATOH, Riki× YAMAGUCHI, Yukuya× ISHIMARU, Takashi |
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著者所属(英) | ||||||
en | ||||||
Tokyo University of Fisheries | ||||||
著者所属(英) | ||||||
en | ||||||
Tokyo University of Fisheries | ||||||
著者所属(英) | ||||||
en | ||||||
Tokyo University of Fisheries | ||||||
著者所属(英) | ||||||
en | ||||||
Tokyo University of Fisheries | ||||||
著者所属(英) | ||||||
en | ||||||
Tokyo University of Fisheries | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Distribution and abundance of macrozooplankton off Wilkes Land, Antarctica in austral summer were studied in relation to environmental features associated with the Antarctic Divergence (AD). A single species of salp, Salpa thompsom, dominated others both numerically and by biomass, occupying 44% of mean total abundance with the maximum density of 29873 inds./l000m^3 (44 mg C/m^3). Abundance of Antarctic krill, Euphausia superba, was low through the sampling area (max. 41 inds./1000m^3: 2.9mg C/m^3). Total length frequency and stage of maturity of E. superba suggested relatively late spawning and low recruitment ratio, respectively. Salps and major copepod species showed a spatially partitioned pattern across the AD, in which the former dominated in areas north and south of the AD while the latter was predominant near the AD. Active reproduction of salps seemed to be ongoing in the areas where mean chl a concentration within the euphotic zone was around 0.4-0.6 μg/l, but suppressed where that was higher than 0.6 μg/l. Clogging of mucous nets of salps was considered to be one of the causes of their low abundance at high chl a concentration as observed near the AD. The results suggest that the relatively limited phytoplankton growth, particularly in the eastern side of this research area, may have provided the food condition which was optimal for salp reproduction but unfavorable for other phytoplankton consumers, permitting an explosive population growth of salps. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA10819561 | |||||
書誌情報 |
Proceedings of the NIPR Symposium on Polar Biology 巻 11, p. 33-50, 発行日 1998-02 |
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出版者 | ||||||
出版者 | National Institute of Polar Research |