*Takafumi Hirata¹, Yoshio Masuda², Jorge García Molinos¹, Keiko Sato¹, Irene Alabia¹, Toru Hirawake³, EIJI WATANABE⁴, Maki Noguchi Aita⁵, Sei-Ichi Saitoh¹ (1.Arctic Research Center, Hokkaido University, 2.Faculty of Environmental Earth Science, Hokkaido University, 3.Graduate School of Fisheries Sciences, Hokkaido University, 4.Institute of Arctic Climate and Environment Research, Japan Agency for Marine-Earth Science and Technology, 5.Earth Surface System Research Center, Japan Agency for Marine-Earth Science and Technology)

*Irene Alabia¹, Jorge Garcia Molinos¹, Sei-Ichi Saitoh¹, Takafumi Hirata¹, Toru Hirawake³, Franz Mueter² (1.Arctic Research Center, Hokkaido University, 2.University of Alaska Fairbanks, 3.Faculty of Fisheries Sciences, Hokkaido University)