Inter- and intraspecific variations of the chemical properties of high-Arctic mosses along water-regime gradients
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概要
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We examined and compared the contents of organic chemical components (lignin-like compounds, total carbohydrates and extractives), carbon and nutrients (nitrogen, phosphorus, potassium, calcium, magnesium) among the mosses Calliergon giganteum, Hylocomium splendens, Racomitrium lanuginosum, and among three populations of H. splendens collected from habitats in contrasting water regimes in the Canadian high-arctic tundra. C:N:P ratios were analyzed among and within moss species. Mosses from hydric habitats had lower total carbohydrate and higher nutrients contents than did mosses from drier habitats; however, we found no intraspecific variations in nitrogen and calcium contents in the different populations of H. splendens along water-regime gradients. The contents in lignin-like compounds, extractives and carbon showed no clear trends along water-regime gradients. Mosses from hydric habitats had lower C:N, C:P and N:P ratios than mosses from drier habitats, although we found no intraspecific variations in C:N ratios in H. splendens along water-regime gradients. These results suggest that chemical properties of mosses, especially nutrient contents, are strongly correlated with water availability in high-Arctic tundra.
- 国立極地研究所の論文
著者
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Kanda Hiroshi
National Institute of Polar Research, Midori-cho, Tachikawa, Tokyo 190-8518, Japan.
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Osono Takashi
Center For Ecological Res. Kyoto Univ. 509-3 Hirano 2-chome Otsu Shiga 520-2113 Jpn
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Osono Takashi
Center For Ecological Research Kyoto University 509-3 Hirano 2-chome Otsu Shiga 520-2113 Japan
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Kanda Hiroshi
National Institute Of Polar Research
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Ueno Takeshi
National Institute of Polar Research, 10-3, Midori-cho, Tachikawa-shi, Tokyo 190-8515, Japan
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Kanda Hiroshi
National Institute Of Polar Research Midori-cho Tachikawa Tokyo 190-8518 Japan.
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Ueno Takeshi
National Institute Of Polar Research 10-3 Midori-cho Tachikawa-shi Tokyo 190-8515 Japan
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Kanda Hiroshi
National Institute Of Polar Research 10-3 Midori-cho Tachikawa-shi Tokyo 190-8515 Japan
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Kanda Hiroshi
National Aerospace Laboratory
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Ueno Takeshi
National Institute Of Polar Research 10-3 Midori-cho Tachikawa Tokyo Japan
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