渤海水母类生态的初步研究——种类组成、数量分布与季节变化

水母类是海洋生态系统中非常重要的一个类群。根据１９５９年以来在渤海进行的几次较为全面的调查资料，对渤海水母类的种类组成、数量分布与季节变化作了较为详细的研究。共记录到水母类４１种，其中水螅水母３５种，钵水母４种，栉水母２种。主要以近岸低盐类型为主，高盐种类少并且出现时间短。渤海水母类密度季节变化有３个高峰，出现在冬季，夏季和秋季，分别出八斑黄氏水母，酒杯水母属、和平水母属、五角水母构成。渤海水线类

Theecology of medusae in the Bohai Sea

Medusae play an important role in marine ecosystem.The species composition,Quantitative distribution and seasonal variation of Medusae in the Bohai Sea were determined in a discontinuous period from 1959 to 1997.There were totally 41 species,among which were 35 species of Hydrozoa,4 species of Scyphomedusae and 2 species of Ctenophore,respectively.Most species were found in relatively low salinity habitat,only a few in high salinity habitat for a very short time in each sampling year.The seasonal occurrence...