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当前位置: 首页 > 文章 > 2013年春季南沙海域不同水团中网采浮游植物群落特征 南方水产科学 2015 (5) 38-46
Position: Home > Articles > Community characteristics of net phytoplankton in water masses in Nansha area during spring of 2013 South China Fisheries Science 2015 (5) 38-46

2013年春季南沙海域不同水团中网采浮游植物群落特征

作  者：
戴明;巩秀玉;刘华雪;廖秀丽;齐占会;黄洪辉
单  位：
中国水产科学研究院南海水产研究所广东省渔业生态环境重点实验室农业部南海渔业资源开发利用重点实验室
关键词：
南沙海域;网采浮游植物;水团;冗余分析
摘  要：
根据2013年春季调查资料研究了南沙海域不同水团中网采浮游植物的群落特征。共鉴定网采浮游植物4门62属222种,其中硅藻门和甲藻门种类数分别占67.1%和31.1%。浮游植物平均丰度为(16 655±36 570)个·m-3,硅藻门平均丰度占93.6%。浮游植物多样性指数(H')和均匀度指数(J')平均分别为4.43和0.85。巴拉巴克海峡西侧混合水受苏禄海表层入侵水及冷涡影响,跃层浅,营养盐浓度高,浮游植物种类数和丰度均最高。巽他陆架北缘沿岸混合水受局部上升流的影响,浮游植物丰度次之。中南半岛沿岸混合水中无机氮(DIN)浓度最低,浮游植物种类数和丰度均低,而固氮蓝藻的丰度比例却最高。南沙中央表层水受陆源物质影响小,跃层深且薄,75 m以浅水层硅酸盐浓度最低,浮游植物丰度较低,但甲藻门丰度比例最高,J'最高,浮游植物丰度最低值出现在暖涡区域。
译  名：
Community characteristics of net phytoplankton in water masses in Nansha area during spring of 2013
作  者：
DAI Ming;GONG Xiuyu;LIU Huaxue;LIAO Xiuli;QI Zhanhui;HUANG Honghui;Guangdong Provincial Key Lab.of Fishery Ecology and Environment;Key Lab.of South China Sea Fishery Resources Exploitation & Utilization,Ministry of Agriculture;South China Sea Fisheries Research Institute,Chinese Academy of Fisheries Sciences;
关键词：
Nansha area;;net phytoplankton;;water masses;;redundancy analysis
摘  要：
Based on the samples collected in Nansha area in spring,2013,we investigated the net phytoplankton community in order to determine the effects of water masses on their distribution. A total of 222 species,belonging to 62 genera of 4 phyla,were identified. Bacillariophyta and Pyrrophyta accounted for 67. 1% and 31. 1% in species number,respectively. The average abundance of net phytoplankton was( 16 655 ±36 570) cell·m- 3. Bacillariophyta accounted for 93. 6% in abundance. The average diversity index and evenness index of net phytoplankton were 4. 43 and 0. 85. The species number and abundance of net phytoplankton were the highest in the mixed waters in the west of Balabac Strait,characterized by shallow thermocline and high nutrient concentrations resulting from the intrusion of Sulu Sea waters and the appearance of a clod eddy. In the mixed waters in the north edge of the Sunda Shelf,the abundance of net phytoplankton was sub-high due to the influence of upwelling. In the mixed waters from coast of the Indo-China Peninsula with low inorganic nitrogen,the species number and abundance of net phytoplankton were low,but the percentage of Cyanophyta increased to the maximum. In the Nansha central surface waters with less terrigenous matter,deep and thin thermocline,the lowest silicate concentration occurred at 0 ~ 75 m,the average abundance of net phytoplankton was low,but the percentage of Pyrrophyta increased to the maximum,and the average evenness index of net phytoplankton was the highest,while the lowest abundance of net phytoplankton appeared in the warm eddies.

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