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*Mutumi Nomura
Field Science Center for Northern Biosphere Hokkaido University
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Kentaro Takagi
Field Science Center for Northern Biosphere Hokkaido University
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Hiroyuki Takahashi
Field Science Center for Northern Biosphere Hokkaido University
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Hajime Hojo
Field Science Center for Northern Biosphere Hokkaido University
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Kaichiro Sasa
Field Science Center for Northern Biosphere Hokkaido University
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Yasumi Fujinuma
National Institute fot Environmental Studies