Communities of algae and cyanobacteria on glaciers in west Greenland

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概要

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• Communities of algae and cyanobacteria on two glaciers in west Greenland (the Qaanaaq and Russel glaciers) were analyzed and compared with the aim of explaining why the Qaanaaq Glacier (in northwestern Greenland) has a dark-colored surface in satellite images whereas the Russel Glacier (in western central Greenland) has a light-colored surface. We found that algal andcyanobacterial communities differed between the glaciers and that the amount of biomass was higher on the colder glacier (Qaanaaq Glacier). The community on the Qaanaaq Glacier was composed mainly of green algae, whereas that on the Russel Glacier was dominated by cyanobacteria. Despite the shorter melting period (due to colder air temperature) for the QaanaaqGlacier, the biovolume of algae and cyanobacteria was 2.35 times higher than that on the Russel Glacier at a similar altitude, suggesting greater primary production on the Qaanaaq Glacier. We discuss the possible effects of temperature, nutrient concentrations, and cryoconite holes (melt-holes in the glacier) on the community structure and productivity of algae and cyanobacteria on each glacier, and consider the influence of the identified differences in algal and cyanobacterial communities on the amount of surface melt.

著者

• 幸島 司郎

  京大

• Uetake Jun

  Transdisciplinary Research Integration Center, Toranomon, Minato, Tokyo 105-0001, Japan.

• Naganuma Takeshi

  Graduate School of Biosphere Science, Hiroshima University, Kagamiyama, Higashi-hiroshima, Hiroshima

• Hebsgaard Martin

  Institute of Evolutionary Biology, The University of Edinburgh, Edinburgh EH9 3JT, United Kingdom.

• Kanda Hiroshi

  National Institute of Polar Research, Midori-cho, Tachikawa, Tokyo 190-8518, Japan.

• Kohshima Shiro

  Wildlife Research Center of Kyoto University, Tanaka-Sekidencho, Sakyo, Kyoto 606-8203, Japan.

• Hebsgaard Martin

  Institute Of Evolutionary Biology The University Of Edinburgh Edinburgh Eh9 3jt United Kingdom.

• Uetake Jun

  Transdisciplinary Research Integration Center Toranomon Minato Tokyo 105-0001 Japan.

• 幸島 司郎

  Basic Biology Faculty Of Bioscience And Biotechnology (c/o Faculty Of Science) Tokyo Institue Of Tec

• Kohshima Shiro

  Wildlife Res. Center Of Kyoto Univ.

• 幸島 司郎

  京大・理・動物

• Kohshima Shiro

  Wildlife Research Center Of Kyoto University

• 辛島 司郎

  東京工業大学生命理工学部

• Kohshima Shiro

  Biological Laboratory Faculty Of Science Tokyo Institute Of Technology

• Kohshima Shiro

  Biological Laboratory Faculty Of Bioscience And Biotechnology Tokyo Institute Of Technology

• Kohshima Shiro

  Tokyo Institute Of Technology

• Kohshima Shiro

  Department Of Biological Sciences Graduate School Of Bioscience And Biotechnology Tokyo Institute Of

• 辛島 司郎

  東京工業大学大学院生命理工学研究科

• Kohshima Shiro

  Basic Biology Faculty Of Bioscience And Biotechnology(c/o Faculty Of Science) Tokyo Institute Of Tec

• Kanda Hiroshi

  National Institute Of Polar Research

• 幸島 司郎

  東京工業大学

• Kohshima Shiro

  Wildlife Research Center Of Kyoto University 2-24 Tanaka-sekiden-cho Sakyo-ku Kyoto 606-8203 Japan.

• Kanda Hiroshi

  National Institute Of Polar Research Midori-cho Tachikawa Tokyo 190-8518 Japan.

• 幸島 司郎

  京都大学野生動物研究センター

• Naganuma Takeshi

  Graduate School Of Biosphere Science Hiroshima University Kagamiyama Higashi-hiroshima Hiroshima 739

• Naganuma Takeshi

  Graduate School Of Biosphere Science Hiroshima University

• Kanda Hiroshi

  National Institute Of Polar Research 10-3 Midori-cho Tachikawa-shi Tokyo 190-8515 Japan

• Kanda Hiroshi

  National Aerospace Laboratory

• Naganuma Takeshi

  Graduate School Of Biosphere Science Hiroshima University Kagamiyama Higashi-hiroshima Hiroshima 739

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