摘要
水母类是海洋生态系统中非常重要的一个类群。根据 1 959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 4 1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。渤海水母类密度的季节变化有 3个高峰 ,出现在冬季 ,夏季和秋季 ,分别由八斑芮氏水母、酒杯水母属、和平水母属、五角水母构成。渤海水母类的分布具有一定的季节特点 ,冬季和夏季以莱州湾密度最高 ,春季为渤海湾最高 ,秋季为中央海区最高。
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 of jellyfishes showed three peaks in a year. Rathkea octopunctata appeared mainly in the February peak,Phialidium mainly in the June peak, Muggiaea atlantica and Eirene mainly in the October peak.The distribution of Medusae in the Bohai Sea changed seasonally,the highest density patches were found mainly in winter and summer in Laizhou Bay,and was in spring and in the middle autumn in Bohai Bay.The density of Medusae in Liaodong Bay was relatively low in every seasons,comparing with the other areas in the Bohai Sea.
出处
《生态学报》
CAS
CSCD
北大核心
2000年第4期533-540,共8页
Acta Ecologica Sinica
基金
国家自然科学基金重大项目! 49790010研究成果
关键词
水母类
种类组成
数量分布
季节变化
渤海
Medusae
species composition
quantitative distribution
seasonal variation
Bohai Sea
