摘要
于2006年11月-2007年8月对珠江口西部的黄茅海河口区浮游动物进行了四个航次的生态调查，分别在入海口处虎跳门和崖门各设置1个采样断面，分析了两口门的水文特征和水体理化因子特点及其两者之间的差异显著性，调查研究了浮游动物的种类组成、密度、生物量和多样性指数等分布特征。共检出浮游动物50种，桡足类占优势，24种，其次为轮虫类，为12种，枝角类和原生动物分别各为5种，多毛类、异足类、糠虾类和螺类各1种，此外，还有桡足类幼虫以及未知种类2种。分析得出，在调查周期内，虎跳门和崖门浮游动物的密度、生物量及多样性指数值的差异不显著，这可能与两口门的水体理化因子及浮游植物群落构成没有显著性差异有着直接的原因，而受两口门水动力条件不同的影响较小。由聚类分析结果可知，四个季节可分为两大组，虎跳门和崖门秋、冬两季浮游动物群落结构较为相近，春、夏两季浮游动物群落结构较为相近。
The authors carried out four cruises to survey the ecological characteristics of zooplankton by setting one section in the Hutiaomen and Yamen of Huangmao Sea from November 2006 to August 2007. Hydrological characteristics and physical-chemical factors in these two estuaries and great differences between them were analyzed; besides, species composition, density, biomass and diversity index of zooplankton were studied. The results showed that totally 50 species were identified, among which copepod was the dominant group containing 24 species. Moreover, 12 species rotatoria, 5 species cladocera and 1 species protozan, 1 species polychaeta, 1 species heteropoda, 1 species mysidacea and 1 species snail were found. Copepod larvae and 2 unknown species were also observed. There were no significant differences in density, biomass and diversity index of zooplankton between two sampling sites, which might be due to the fact that physical-chemical factors and phytoplankton community structure were not significantly different between Hutiaomen and Yamen and these were slightly affected by hydrodynamic factors. The duster analysis showed that zooplankton community structure in autumn and winter was similar, and it was also similar in spring and summer.
出处
《生态科学》
CSCD
2010年第2期121-126,共6页
Ecological Science
基金
广东省科技计划项目(2004B20301015)
