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Temporal variations in the abundance and sinking flux of diatoms under fast ice in summer near Syowa Station, East Antarctica
https://nipr.repo.nii.ac.jp/records/10076
https://nipr.repo.nii.ac.jp/records/10076cc1b5398-f796-4f5c-960e-ad54c14b48f8
Item type | 学術雑誌論文 / Journal Article(1) | |||||
---|---|---|---|---|---|---|
公開日 | 2014-10-15 | |||||
タイトル | ||||||
タイトル | Temporal variations in the abundance and sinking flux of diatoms under fast ice in summer near Syowa Station, East Antarctica | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Temporal variations in the abundance and sinking flux of diatoms under fast ice in summer near Syowa Station, East Antarctica | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Diatom assemblage | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Fast ice | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Antarctica | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Sinking characteristics | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Diatom assemblage | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Fast ice | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Antarctica | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Sinking characteristics | |||||
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 | journal article | |||||
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 |
Ichinomiya, Mutsuo
× Ichinomiya, Mutsuo× Gomi, Yasushi× Nakamachi, Miwa× Honda, Masaki× Fukuchi, Mitsuo× Taniguchi, Akira× Ichinomiya, Mutsuo× Gomi, Yasushi× Nakamachi, Miwa× Honda, Masaki× Fukuchi, Mitsuo× Taniguchi, Akira |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | To investigate the fate of ice algae released from sea ice, we investigated the abundance, species composition, and sinking flux of diatoms in the water column under fast ice near Syowa Station, Antarctica during the summer of 2005/2006. The diatom assemblage in the water column consisted of chain-forming planktonic species, in contrast to the under-ice assemblage dominated by pennate species reported from this site in the past; this dissimilarity suggests the presence of an unconsolidated platelet ice layer under the congelation ice, within which planktonic species can bloom. Among the dominant diatoms, Porosira pseudodenticulata and Pseudo-nitzschia cf. turgiduloides were dominant in the water column, and their water column stocks were higher than their mass sedimentation. These species apparently maintain their populations in the surface layer, as their production remains in the water column. In contrast, Fragilariopsis kerguelensis and Thalassiosira australis were scarce in the water column but rich in the flux, indicating active sinking and export of their production to the benthic ecosystem. This distinction in buoyancy control and sinking characteristics of the dominant diatoms on release from the fast ice influences the diatom species composition and carbon flow under the ice. | |||||
内容記述 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 海氷から離脱するアイスアルジーの行く末を調査すべく、2005/6年夏季に南極昭和基地近傍の定着氷域において深度別の珪藻類の現存量、種類組成と沈降フラックスを調べました。もっとも優占するPorosira pseudodenticulataとPseudo-nitzschia cf.turgiduloidesの現存量はそれらの沈降量よりも大きく、個体群を表層水中で維持しているようです。これに対しFragilariopsis kerguelensisとThalassiosira australisは表層水中にはほとんど存在せず沈降フラックス中に多量に存在することから、生産した物質を盛んに沈降させて海底の生態系へ移送していることを示唆しています。 | |||||
書誌情報 |
Polar science en : Polar science 巻 2, 号 1, p. 33-40, 発行日 2008-03 |
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出版者 | ||||||
出版者 | 国立極地研究所 | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 18739652 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA12240481 | |||||
論文ID(NAID) | ||||||
識別子タイプ | NAID | |||||
関連識別子 | 110006650439 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | http://doi.org/10.1016/j.polar.2008.01.001 | |||||
関連名称 | 10.1016/j.polar.2008.01.001 |