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Ecological studies of aquatic moss pillars in Antarctic lakes 2. Temperature and light environment at the moss habitat
https://doi.org/10.15094/00006196
https://doi.org/10.15094/0000619670faf48b-e031-44b7-b12c-c5389972ecaa
名前 / ファイル | ライセンス | アクション |
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KJ00000045356 (634.3 kB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 2003-02-01 | |||||
タイトル | ||||||
タイトル | Ecological studies of aquatic moss pillars in Antarctic lakes 2. Temperature and light environment at the moss habitat | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | moss pillars | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | growth environment | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | water quality | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | bottom temperature | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | PAR | |||||
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 | 10.15094/00006196 | |||||
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) |
Kudoh, Sakae
× Kudoh, Sakae× Watanabe, Kentaro× Imura, Satoshi |
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著者所属(英) | ||||||
言語 | en | |||||
値 | National Institute of Polar Research/National Institute of Polar Research/National Institute of Polar Research | |||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | To understand the environmental conditions, which control the growth of moss pillars in lake bottoms, water temperature and light in the moss pillar habitat in lake Kuwai Ike in Skarvsnes, Soya Coast, East Antarctica, were continuously measured for about one year, February 1999 to Jannuary 2000. Limnological characteristics of surface water of the lake were investigated in summer 2000, and compared with those in four neighboring lakes. Low contents of ions, neutral pH and dissolved oxygen in saturation level in the surface water in Kuwai-Ike lake were comparable to the values of the other oligotrophic freshwater lakes in Soya Coast and Schirmacher Oasis, located in Queen Maud Land, East Antarctica. The temperature at the lake bottom showed uni-modal seasonal change, in the range 0-12°C. Several sudden temperature drops of > 2°C within a few hours were recorded in the ice-free autumn season; they may have been correlated with the wind-induced vertical mixing events which occurred before complete ice cover development on the lake surface. Light reaching the lake bottom showed clear diel and seasonal fluctuations, and the flux density was strongly affected by the attenuations of water, ice and snow: the photosynthetically active radiation (PAR) measured at the lake bottom was < 50% of that at ground level even in ice-free autumn, and decreased further in ice covered seasons. The instantaneous PAR flux <10μmol m^<-2> s^<-1> was recorded for nearly 2 months in winter; however, daily fluxes over 1 mol m^<-2> day^<-1> were recorded for the other ca. 8 months, with >100μmol m^<-2> s^<-1> of instantaneous peak fluxes around noon. | |||||
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 16, p. 23-32, 発行日 2003-02 |
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出版者 | ||||||
出版者 | National Institute of Polar Research |