衢山岛海域秋季浮游植物群落组成及影响因素  

Community composition of phytoplankton in Qushan Island in autumn and related affecting factors

作　　者：高瑜[1] 江志兵[1] 朱旭宇[1] 周青松[1] 陈全震[1] 曾江宁[1] 

机构地区：[1]国家海洋局第二海洋研究所国家海洋局海洋生态与生物地球化学重点实验室,浙江杭州310012

出　　处：《海洋通报》2012年第6期654-660,共7页Marine Science Bulletin

基　　金：国家重点基础研究发展规划(2010CB428903);我国近海海洋综合调查与评价专项(ZJ908-04-02);国家海洋局青年科学基金项目(2011106);国家海洋局第二海洋研究所基本科研业务费专项(JG0920)

摘　　要：根据2010年10月的调查数据,对衢山岛海域浮游植物的种类组成、优势种、丰度、多样性及其环境因子进行了分析。在本次调查期间,共采集到浮游植物7门181种,其中硅藻133种,占总种数的73.9%,为调查海域浮游植物群落的主要类群,且中肋骨条藻为绝对优势种;甲藻38种,占总种数的21.1%。该海域浮游植物的种类组成和细胞丰度具有明显的潮周期特性,体现为大潮期浮游植物种类数和细胞丰度明显高于小潮期;大、小潮期间浮游植物平均H′分别为0.65和1.10;由聚类分析发现,浮游植物不同群落间组成差异显著。衢山岛海域富营养化现象较为严重,大潮期间,无机氮及活性磷酸盐的平均浓度分别为0.81 mg/L和0.04 mg/L;小潮期间,无机氮及活性磷酸盐的平均浓度分别为1.04 mg/L和0.04 mg/L。The species composition, dominant species, and the abundance of phytoplankton were investigated in Qushan Island in October, 2010. Total 181 species of phytoplankton were commonly found in the survey area, belonging to 7 phyla. The phytoplankton community was mainly composed of Bacillariophyta （133 species, 73.9 % ）,followed by Dinophyta （38 species, 21.1%）. The Skeletonema costatum was the most dominant species in this area. The species and cell abundances of phytoplankton took on the obvious tidal-cycle characteristics. It showed that phytoplankton species and cell abundance in spring tide were larger than those in neap tide. The average diversity indices （H＇） of phytoplankton during spring tide and neap tide were 0.65 and 1.10, respectively. The cluster analysis showed that each group had significant differences. The eutrophication was serious in Qushan Island. During the spring tide, the contents of DIN and DIP were 0.81 mg/L and 0.04 mg/L, and during the neap tide, the contents of DIN and DIP were 1.04 mg/L and 0.04 mg/L, respeetively.

关 键 词：衢山岛 浮游植物 种类组成 群落多样性 潮周期 

分 类 号：P735[天文地球—海洋生物学]