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2006年秋季长江口及其邻近水域浮游植物群集
引用本文:赵 冉,孙 军,白 洁.2006年秋季长江口及其邻近水域浮游植物群集[J].海洋科学,2010,34(4):32-39.
作者姓名:赵 冉  孙 军  白 洁
作者单位:1. 中国科学院,海洋研究所,海洋生态与环境科学重点实验室,山东,青岛,266071;中国海洋大学,海洋环境与生态教育部重点实验室,山东,青岛,266003
2. 中国科学院,海洋研究所,海洋生态与环境科学重点实验室,山东,青岛,266071
3. 中国海洋大学,海洋环境与生态教育部重点实验室,山东,青岛,266003
基金项目:中国科学院知识创新重点方向项目(KZCX2-YW-213-2,KZCX3-SW-232); 国家自然科学基金项目(40676089); 国家重点基础研究发展规划项目(2006CB400605)
摘    要:根据2006年11月在长江口及其邻近水域(30°30′N~32°30′N,121°E~123°30′E)39个测站采集的浮游植物水样研究了该水域浮游植物群集特征。调查区浮游植物以硅藻和甲藻为主,此外还有少量的金藻、蓝藻和绿藻。浮游植物细胞丰度介于0.13~59.69个/mL之间,平均为4.39个/mL,主要优势物种为圆海链藻Thalassiosira rotula和骨条藻Skeletonema spp.,调查区两个细胞丰度密集区分别出现在靠近口门以及外海水域。浮游植物细胞在20m层出现最大值。调查区两个典型断面的浮游植物分布特征分别由骨条藻和圆海链藻所刻画。固氮蓝藻铁氏束毛藻Trichodesmium thiebautii主要出现在调查区东部水域表层。根据浮游植物物种和细胞丰度进行聚类分析后,发现存在调查区东部与近岸2个浮游植物分区。

关 键 词:浮游植物    长江口    群集结构
收稿时间:2009/1/23 0:00:00
修稿时间:2009/4/10 0:00:00

Phytoplankton assemblages in Yangtze River Estuary and its adjacent water in autumn, 2006
ZHAO Ran,SUN Jun and BAI Jie.Phytoplankton assemblages in Yangtze River Estuary and its adjacent water in autumn, 2006[J].Marine Sciences,2010,34(4):32-39.
Authors:ZHAO Ran  SUN Jun and BAI Jie
Abstract:Water samples for phytoplankton were taken from grid survey stations around the Yangtze River Estuary and its adjacent water from November 7 to 21, 2006. Phytoplankton assemblages and cell abundance were reported in this paper. The primary phytoplankton group was diatoms and the secondary group dinoflagellates. There were also a few species belonging to Chrysophyceae, Chlorophyceae and Cyanophyceae, respectively. The dominant species were Thalassiosira rotula and Skeletonema costatum, respectively. The cell abundance of phytoplankton ranged from 0.13 to 59.69 cells/L with the average being 4.39 cells/L. The areas of high cell abundance were at the Yangtze River mouth and offshore of the survey area, respectively. The maximum phytoplankton cell abundance was at 20-m water layer. Section distributions were briefly described for S. costatum and T. rotula. The diazotrphic flora Trichodesmium thiebautii were mainly in the surface water of the eastern part of the survey area. Two phytoplankton provinces in the survey area were discriminated by cluster analysis of the phytoplankton assemblages.
Keywords:Phytoplankton  Yangtze River Estuary  Assemblage structure
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