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Noriyosi Sato
Usujiri Fisheries Station, Field Science Center for Northern Biosphere, Hokkaido University
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Ayami Sekizawa
Graduate School of Science, Osaka City University
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Satoshi Awata
Usujiri Fisheries Station, Field Science Center for Northern Biosphere, Hokkaido University
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Hiroyuki Munehara
Usujiri Fisheries Station, Field Science Center for Northern Biosphere, Hokkaido University
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Yasuhiro Nakashima
College of Economics, Nihon University