摘要
本文阐明了长江口浑浊带水域内浮游动物的生物量、种类组成、群落结构等生物学特征及生物学过程。研究结果表明：在丰水期平均生物量为９８．９毫克／米￣３，明显低于长江口外河口锋区内同期生物量。种类组成也少于河口锋区内组成。群落结构虽呈现多种复合的结构，但却以河口半咸水性种类为优势。优势种为真刺唇角水蚤Ｌａｂｉｄｏｃｅｒａｅｕｃｈａｅｔａ、火腿许水蚤Ｓｃｈｍａｃｋｅｒｉａｐｏｐｌｅｓｉａ、虫肢歪水蚤Ｔｏｒｔａｎｕｓｖｅｒｍｉｃｕｌｕｓ等。浮游动物的生物量、种类组成、优势种及群落结构等均有明显的季节性和潮汐性变化。
The paper deals with biological characteristics and process of biomass,species compositon,community structure,etc.of zooplankton in turbidity maximum ofthe Changjiang estuary area.The result shows that the average biomass was 98.9mg/m￣3 in flood season.It wasmuch less than that the volume of biomass (439mg/m￣3) in estuary front area off theChangjiang estuary in the same season.In addition,the number of species composition alsowas less than that in estuary front area. Although the community structure of zooplanktontook the form of complex structure,the estuary blackness species were dominant.The dominant species were Labidocera euchaeta,Shmackria poplesia,Tortanus vermiculus,etc.The biomass,species composition,dominant species and community structure varyobviously with season and tidal variation.
出处
《中国水产科学》
CAS
CSCD
1995年第1期39-48,共10页
Journal of Fishery Sciences of China
基金
国家自然科学基金
关键词
长江口
最大浑浊带
浮游动物
生态学
Changjiang river estuary,Turbidity maximum,Zooplankton,Ecology,Dominant species
