作　　者： ; ; ; ;

机构地区： 汕头大学理学院生物系

出　　处： 《生态学杂志》 2011年第8期1757-1765,共9页

摘　　要： 于2009年3月—2010年3月对汕头港生态环境进行连续监测,研究了浮游植物组成及其对环境条件的敏感程度。结果表明:研究区共鉴定出322种浮游植物,包含了234种硅藻、141种淡水和半咸水种以及64种赤潮生物;浮游植物丰度、Shannon指数和均匀度指数分别是3127.6×104cells·m-3、2.53和0.57;中肋骨条藻(Skeletonema costatum)和颤藻(Oscillatoria sp.)是全年优势种,优势度分别是0.066和0.038;浮游生物数量组成结构与温度明显相关(r=0.699,P<0.01)。浮游植物与环境因子之间的相关性分析显示,透明度是汕头港浮游植物生长主要限制因子。比较浮游植物数量组成与环境因子间的相关程度发现,上游输入是汕头港污染物的重要来源之一。多维尺度与Pearson相关性分析显示,汕头港浮游植物群落结构变化主要受温度、盐度与pH影响。 Based on the monitoring data of the eco-environment in Shantou Harbor from March 2009 to March 2010,this paper studied the composition of phytoplankton community and its sensitivity to the environment in the Harbor.A total of 322 phytoplankton species were identified,including 234 diatom species,141 fresh-water and brackish water species,and 64 red tide species.The average abundance,Shannon index,and evenness index of the community were 3127.6×104 cells·m-3,2.53,and 0.57,respectively,and Skeletonema costatum and Oscillatoria sp.were the dominant species throughout the year,with the dominance index being 0.066 and 0.038,respectively.There was a significant positive correlation between phytoplankton community composition and water temperature（r=-0.699,P0.01）,and the phytoplankton growth was mainly limited by water transparence.The relevance degree of phytoplankton composition and environmental factors showed that upstream input was an important source of Shantou Port pollutants,and the multi-scale and Pearson correlation analyses indicated that water temperature,salinity,and pH were the main factors affecting the phytoplankton community composition.

关 键 词： 生态类群 种类组成 丰度 物种多样性

领　　域： [生物学] [生物学] [环境科学与工程]