caa a22 4500 465810942 CHVBK 20180323112116.0 cr unu---uuuuu 170327e19901201xx s 000 0 eng 10.1007/BF02123501 doi (NATIONALLICENCE)springer-10.1007/BF02123501 Seasonal variations of the deep-sea macrobenthos communities in the coastal and bathyal zones off sanriku, northeastern Japan [Elektronische Daten] [Shigeaki Kojima, Suguru Ohta] Seasonal variations of macrobenthos communities were analyzed over six years at two fixed stations at the depths of 500 m and 1,000 m in the bathyal zone off Sanriku, northeastern Japan, and were compared with those of the 80 m station established at the mouth of Otsuchi Bay, northeastern Japan. Significant seasonal variations of macrobenthos density were detected at the 80 m and 500 m stations. While the density increased in late spring and decreased until July at the 80 m station, it increased between May and August, and decreased in September at the 500 m station. At the 1,000 m station, no seasonal variation of macrobenthos abundance could be detected. The seasonal variations of the density observed at the 80 m and 500 m stations are probably related to that of the supply of organic materials derived from surface phytoplankton. Differences in the patterns of seasonal variations among the three stations may reflect the different periods of food supply to the sea floor. Significant seasonal variation in the feeding structure of the polychaete communities could be detected at the 80 m and 1,000 m stations. Oceanographical Society of Japan, 1989 Kojima Shigeaki Institute of Biological Science, University of Tsukuba, Tennoudai 1-chome 1-1, Tsukuba-shi, 305, Ibaraki, Japan aut Ohta Suguru Ocean Research Institute, the University of Tokyo, Minamidai 1-chome 15-1, Nakano-ku, 164, Tokyo, Japan aut Journal of the Oceanographical Society of Japan Kluwer Academic Publishers 46/6(1990-12-01), 250-260 0029-8131 46:6<250 1990 46 10872 https://doi.org/10.1007/BF02123501 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02123501 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kojima Shigeaki Institute of Biological Science, University of Tsukuba, Tennoudai 1-chome 1-1, Tsukuba-shi, 305, Ibaraki, Japan aut NATIONALLICENCE 700 1- Ohta Suguru Ocean Research Institute, the University of Tokyo, Minamidai 1-chome 15-1, Nakano-ku, 164, Tokyo, Japan aut NATIONALLICENCE 773 0- Journal of the Oceanographical Society of Japan Kluwer Academic Publishers 46/6(1990-12-01), 250-260 0029-8131 46:6<250 1990 46 10872 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer