Affiliation: | 1. Field Science Center for Northern Biosphere, Hokkaido University, 3-1-1 Minato-cho, Hakodate, 041-8611, Japan 3. Department of Science of Environmental Education, Hokkaido University of Education, 1-2 Hachiman-cho, Hakodate, Hokkaido, 040-8567, Japan 4. Civil Engineering & Eco-Technology Consultants, Co., Ltd, 2-23-2 Higashi-Ikebukuro, Toshima, Tokyo, 170-0013, Japan 2. Zoological Institute, The Russian Academy of Science, Universitetskaya Emb. no. 1, St. Petersburg, 199034, Russia
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