Biological characteristics of dark colored material (cryoconite) on Canadian Arctic glaciers (Devon and Penny ice caps) (scientific paper)
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概要
- 論文の詳細を見る
Biological characteristics of dark colored material (cryoconite) collected from Canadian Arctic glaciers (Devon and Penny ice caps) are described. The cryoconite consists of mineral particles and organic matter. The amount of organic matter was 0.8-13.8% dry weight. Seven taxa of snow algae (Chlorophyta and Cyanophyta) were observed in the cryoconite. The mineral particles, the algae, the bacteria, and amorphous organic matter formed small dark colored granules (cryoconite granules). The size of the granules was approximately 0.4mm in diameter. Microscopy of the granules revealed that the granules contain bacteria with mucus like substance, and that the surface of the granules was covered with filamentous blue-green algae. These observations suggest that the granules are formed by algal and bacterial activity on the glaciers, and that the cryoconite includes a large amount of biological products. The amount of the cryoconite per unit area on the glacier surface was generally small (mean 48g m^<-2> in dry weight). In contrast, a large amount of the cryoconite was deposited at the bottom of cryoconite holes. The small amount of cryoconite on the glacier surface means that the effect of the cryoconite on albedo reduction of the glacier surface is small.
- 国立極地研究所の論文
著者
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幸島 司郎
京大
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Goto-Azuma Kumiko
National Institute of Polar Research, Research Organization of Information and Systems
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Goto-azuma Kumiko
National Institute Of Polar Research
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幸島 司郎
Basic Biology Faculty Of Bioscience And Biotechnology (c/o Faculty Of Science) Tokyo Institue Of Tec
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幸島 司郎
京大・理・動物
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辛島 司郎
東京工業大学生命理工学部
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Kohshima Shiro
Biological Laboratory Faculty Of Science Tokyo Institute Of Technology
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Kohshima Shiro
Biological Laboratory Faculty Of Bioscience And Biotechnology Tokyo Institute Of Technology
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Kohshima Shiro
Graduate School Of Bioscience And Biotechnology Tokyo Institute Of Technology
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Kohshima Shiro
Tokyo Institute Of Technology
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辛島 司郎
東京工業大学大学院生命理工学研究科
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Kohshima Shiro
Basic Biology Faculty Of Bioscience And Biotechnology(c/o Faculty Of Science) Tokyo Institute Of Tec
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Takeuchi Nozomu
Frontier Observational Research System for Global Change, International Arctic Research Center, Univ
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Koerner Roy
Terrain Sciences Division, Geological Survey of Canada
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Koerner Roy
Terrain Sciences Division Geological Survey Of Canada
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幸島 司郎
東京工業大学
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幸島 司郎
東京工業大・理・生物
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Takeuchi Nozomu
Frontier Observational Research System For Global Change International Arctic Research Center Univer
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