烟台套子湾海域秋季浮游植物群落的初步研究

根据2010年11月的调查数据，对套子湾海域浮游植物的群落结构进行了初步研究。共鉴定浮游植物3门24属43种，主要为温带近岸性和广布性种。其中，硅藻门20属35种，占总种数的81.40%，以圆筛藻属(Coscinodiscus) 和角毛藻属(Chaetoceros)的种类为主；甲藻类3属7种，占总种数的16.28%，由角藻属（Ceratium）、多甲藻属（Peridinium）及夜光藻（Noctiluca scintillans）组成；金藻门只有小等刺硅鞭藻（Dictyocha fibula）一种。浮游植

A preliminary study on phytoplankton community of Yantai Taozi Bay in autumn

Features of phytoplankton community were studied, based on the survey data of Taozi Bay in autumn, 2010. The results showed that 43 phytoplankton species were identified altogether, belonging to 3 phyla with 24 genera, in which 81.40% were Bacillariophyta and 16.28% were Dinophyta. In Bacillariophyta, Coscinodiscus and Chaetoceros were the dominant groups in terms of species number while Dinophyta was composed of Ceratium, Peridinium and Noctiluca scintillans. In Chrysophta, only Dictyocha fibula was identified. The horizontal distribution of phytoplankton was mainly determined by the diatom distribution pattern. It was high in the north and northwest of Taozi Bay. Analysis of Shannon-Wiener index, Margalef index and Pielou index showed the community structure was stable. The species at 14 stations were grouped into four ecotypes with cluster analysis, and One-Way ANOSIM test of four cruises revealed significant differences in both global and for pairwise test.