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Abundance, size structure and community composition of phytoplankton in the Southern Ocean in the austral summer 1999/2000
https://doi.org/10.15094/00006180
https://doi.org/10.15094/000061808fa9e058-b42f-4cb6-81af-f6e9e8361381
名前 / ファイル | ライセンス | アクション |
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KJ00000045424 (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 | 2002-02-01 | |||||
タイトル | ||||||
タイトル | Abundance, size structure and community composition of phytoplankton in the Southern Ocean in the austral summer 1999/2000 | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | phytoplankton | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | size structure | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | community composition | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | nanoplanktonic diatoms | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Southern Ocean | |||||
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 | 10.15094/00006180 | |||||
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) | |||||
著者名(英) |
Ishikawa,Akira
× Ishikawa,Akira× Wright,Simon W.× van den Enden, Rick× Davidson,Andrew T.× Marchant,Harvey J. |
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著者所属(英) | ||||||
en | ||||||
Faculty of Bioresources, Mie University/AustralianAntarctic Division/Australian Antarctic Division/Australian Antarctic Division/Australian Antarctic Division | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | The abundance, size structure and community composition of phytoplankton in the Southern Ocean were studied, using flow cytometry, microscopy and pigment profiles on two transects one latitudinal (N) and one longitudinal (W) during December 1999 and January 2000. In both transects, the concentration of autotrophic eukaryotes of 2-10μm equivalent spherical diameter (ESD) commonly exceeded those<2μm ESD. No cells>10μm ESD were detected by flow cytometry (however microscopy showed cells>10μm in length). Throughout transect N, chlorophyll α concentrations were generally<0.5μgι^<-1>. South of the Antarctic Polar Front (APF), chlorophyll α concentrations increased southward. CHEMTAX allocation of pigment data (italicized) showed that Diatoms contributed most chlorophyll with Haptophytes sub-dominant. North of the APF, chlorophyll α concentrations tended to increase northward. Here, Haptophytes contributed most chlorophyll, followed by Diatoms, Chlorophytes and Cyanobacteria, except at the northernmost stations where Cyanobacteria dominated. In transect W, chlorophyll α concentrations were also<0.5μgι^<-1> in most cases, but variable. Higher concentrations occasionally occurred in the west. In this transect, Diatoms contributed most (mean=61±15%) of the chlorophyll α, followed by Haptophytes. Nanodiatoms (particularly Fragilariopsis spp.) numerically dominated the diatom community. Fecal pellets composed of these nanodiatoms were observed in the Antarctic water, probably originating from heterotrophic dinoflagellates, implying a significant contribution of nanodiatoms to the microbial food web. However they contributed little to total chlorophyll α and diatom carbon biomass, particularly when chlorophyll and carbon concentrations were high. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA11327019 | |||||
書誌情報 |
Polar bioscience 巻 15, p. 11-26, 発行日 2002-02 |
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出版者 | ||||||
出版者 | National Institute of Polar Research |