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Diel changes in vertical distribution patterns of zooplankton and walleye pollock (Theragra chalcogramma) off the Pacific coast of eastern Hokkaido, Japan, estimated by the volume back scattering strength (Sv) difference method |
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| Authors: | KAZUSHI MIYASHITA KOUTAROU TETSUMURA SATOSHI HONDA TATSUKI OSHIMA RYO KAWABE KEI SASAKI |
| Affiliation: | Field Science Center for the Northern Biosphere, Hokkaido University, 3-1-1, Minato-cho, Hakodate, Hokkaido 041-8611, Japan; SEC Corporation, 22-1, Suehiro-cho, Hakodate, Hokkaido 040-8632, Japan; Hokkaido National Fisheries Research Institute, 116, Katsurakoi, Kushiro, Hokkaido 085-0802, Japan; Japan Marine Fishery Resources Research Center, 3-27, Kioi-cho, Chiyoda, Tokyo 102-0094, Japan |
| Abstract: | |
| Keywords: | acoustic discrimination diel change Sv difference method vertical distribution pattern walleye pollock zooplankton |