胶州湾多毛类的生态特点

用１９９１～１９９５年在胶州湾季度取样（２、５、８、１１月）所得的资料探讨胶州湾毛类组成、分布、数量变动以及生物多样性等生态特点。结果表明胶州湾多毛类组成以温带种和广温广布种为主,兼有广温热带种和冷水种;其平均生物量和栖息密度分别为５．１４ｇｍ－２、８２ｉｎｄｍ－２;湾内的生物多样性、栖息密度均高于湾口;湾内多毛类群落根据聚类分析和主成分分析可分成５种类型;过度捕捞菲律宾蛤仔（Ｒｕｄｉｔａｐｅｓｐｈｉｌｉｐｐｉｎａｒｕｍ）使夏季多毛类多样性偏低。多毛类的分布主要是受不同的底质类型的影响;数量变动主要是受水温的影响。     

Results of the studies on radiation ecology and radiation biology at the Institute of Biology of Komi Science Center of Ural division of Russian Academy of Science (on 40th anniversary of the Department of Radiation Ecology)

Information about the foundation and history of the Radiation Ecology Department and results of the researches on the effect of increased background radiation level on plant and animal populations, migration of radionuclides in natural biocoenosies with increased radiation level are presented.