春季东海产卵场及其邻近海域的浮游植物群落  

The phytoplankton community in spawning ground of the East China Sea and its adjacent waters in spring

作　　者：谭书杰[1,2] 宫相忠[1] 孙军[2] 倪晓波[3] 宋书群[2] 何青[2] 

机构地区：[1]中国海洋大学海洋生命学院,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]卫星海洋环境动力学国家重点实验室国家海洋局第二海洋研究所,浙江杭州310012

出　　处：《海洋科学》2009年第8期5-10,共6页Marine Sciences

基　　金：国家重点基础研究发展规划项目(2006CB400605);国家自然科学基金项目(40676089);国家高技术研究发展计划专题项目(2006AA09Z179)

摘　　要：根据2007年5月在东海产卵场及其邻近海域（26°50′～34°07′N，120°50′～123°59′E）进行的多学科综合调查，研究了该海域浮游植物群落的结构特征。经Utermohl方法分析，共发现浮游植物4门55属144种，其主要类群为硅藻和甲藻，优势物种为柔弱伪菱形藻（Pseudo-nitzschia delicatissima）、具齿原甲藻（Prorocendrum dentatum=东海原甲藻Prorocentrum donghaiense）和中肋骨条藻（Skeletonema costatum）。浮游植物的细胞丰度介于0．1×10^3～1158．6×10^3个／L，平均值为78．9×10^3个／L；细胞丰度在表层较高，随水深增加而降低；袁层的高值主要分布在长江口至南麂列岛的咸淡水交汇处以及象山外海域。调查区浮游植物群落的多样性总体水平较低，Shannon-Wiener指数和Pielou指数均与细胞丰度呈镶嵌分布，细胞丰度较高的区域多样性水平较低。Water samples were collected from spawning grouds of the East China Sea and its adjacent waters in 4^th-18^th May, 2007, and the community structure of phytoplankton was analyzed by Utermohl method. A total of 144 taxa which belong to 55 genera of 4 phyla were identified. The phytoplankton community was mainly composed of Bacillariophyta and nitzschia delicatissima, Prorocendrurn dentatum and Dinophyta. The dominant species were Pseudo- Skeletonema costatum. The cell abundance of phytoplankton ranged from 0.1 × 10^3 cells/L to 1 158.6 × 10^3 cells/L, with an average of 78.9 × 10^3 cells/L. Horizontally, the cell abundance was relatively high in dilution zones between freshwater and seawater, i.e. The Changjiang Estuary, Nanji Archipelago, and adjacent waters of Xiangshan. Vertically, cell abundance was high in surface water and decreased slightly with depth from surface to bottom. The Shannon-Wiener index and Pielou index were low in the area with high cell abundance, and the biodiversity of phytoplankton community was generally low in the study area.

关 键 词：浮游植物 群落结构 东海产卵场 

分 类 号：Q948.1[生物学—植物学]