Abundance and diversity of fungi in relation to chemical changes in arctic moss profiles
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概要
- 論文の詳細を見る
Mosses are a dominant component of high-arctic terrestrial ecosystems, yet little is known regarding the abundance and diversity of fungi associated with these abundant plants. We investigated vertical patterns of abundance and diversity of fungi and their relationship with chemical properties within profiles of Hylocomium splendens and Racomitrium lanuginosum collected in the Oobloyah Bay area on Ellesmere Island, Canada. The moss profiles were divided into 6 (H. splendens) and 5 (R. lanuginosum) layers according to the color and texture, and hyphal length, fungal assemblages, and contents of organic chemical components (acid-unhydrolyzable residues, total carbohydrates, extractives) and nutrients (N, P, K, Ca, Mg) were measured. Total hyphal length was greatest at the middle layers of H. splendens and at the deepest layers of R. lanuginosum and was significantly affected by moss species and nutrient contents. A total of 18 and 19 fungal taxa was isolated from the profiles of H. splendens and R. lanuginosum, respectively, with 11 taxa being common to both moss species. Moss species significantly affected the species distribution of fungi. Individual fungal taxa showed patterns of vertical distribution within the moss profiles. The contents of acid-unhydrolyzable residues and nutrients increased and the content of total carbohydrates decreased down the profile, which was attributable to the ability of fungi to decompose carbohydrates selectively and to immobilize nutrients in decomposed moss residues.
著者
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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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Uchida Masaki
National Institute of Polar Research
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Uchida Masaki
Department Of Biology National Institute Of Polar Research
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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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