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首页> 外文期刊>日本海洋学会誌 >Seasonal variations of the deep-sea macrobenthos communities in the coastal and bathyal zones off sanriku, northeastern Japan
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Seasonal variations of the deep-sea macrobenthos communities in the coastal and bathyal zones off sanriku, northeastern Japan

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摘要

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.

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  • 来源
    《日本海洋学会誌》 |2005年第6期|250-260|共页
  • 作者

    ShigeakiKojima; SuguruOhta;

  • 作者单位

    University of Tsukuba;

    the University of Tokyo;

  • 收录信息 美国《科学引文索引》(SCI);
  • 原文格式 PDF
  • 正文语种 英语
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