2012年夏季南海西北部网采浮游植物群落结构

李冬融; 戴鑫烽; 陆斗定; 夏平

doi:10.3969/j.issn.1001-909X.2014.03.012

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海洋学研究 ›› 2014, Vol. 32 ›› Issue (3) : 87-96. DOI: 10.3969/j.issn.1001-909X.2014.03.012

研究报道

2012年夏季南海西北部网采浮游植物群落结构

李冬融^1,2, 戴鑫烽^1,2, 陆斗定^*1,2, 夏平^1,2

作者信息 +

Community structure of net-phytoplankton in the northwest South China Sea in the summer of 2012

LI Dong-rong^1,2, DAI Xin-feng^1,2, LU Dou-ding^*1,2, XIA Ping^1,2

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文章历史 +

摘要

根据2012年8—9月在南海西北部海区的采样调查,对网采浮游植物的群落结构进行了研究。本次调查共检出浮游植物206种(包括变种及变形),隶属于4门55属,其中硅藻门40属114种,占总种数的55.3%;甲藻门10属86种,占总种数的41.7%。浮游植物平均细胞丰度为66.67×10⁴cells·m^-3,硅藻平均细胞丰度为65.79×10⁴cells·m^-3,甲藻平均细胞丰度为0.88×10⁴cells·m^-3。优势种为伏氏海线藻 Thalassionema franenfeldii、翼根管藻 Rhizosolenia alata和菱形海线藻 Halassionema nizschioides。调查海区的Shannon-Weiner多样性指数(H′)平均值为2.67,高值区位于西沙群岛和调查区东部。对比分析浮游植物细胞丰度与环境因子可知,浮游植物细胞丰度高和种类多的区域,其水体营养盐含量也高,说明营养物质与该区浮游植物细胞丰度分布和群落结构密切相关。

Abstract

Net-phytoplankton community structure and abundance were preliminary studied on the basis of investigation in the northwest South China Sea from August to September, 2012. A total of 206 species were identified, belonging to 4 phyla with 55 genera, of which 55.3% were Bacillariophyta(40 genera and 114 species) and 41.7% were Pyrrophyta(10 genera and 86 species). The average cell abundance of phytoplankton was 66.67×10⁴cells·m^-3 , which was mainly contributed by diatom with mean value of 65.79×10⁴cells·m^-3. The mean value of dinoflagellates was only 0.88×10⁴cells·m^-3. The dominant species were diatom such as Thalassionema franenfeldii,Rhizosolenia alata and Thalassionema nizschioide. The average Shannon-Wiener diversity index of phytoplankton community was 2.67, and the high value occurred in the Xisha Islands and the east part of surveyed area. Distributive pattern of phytoplankton was much related with environmental condition. The water column with high phytoplankton abundance and species diversity often coincided with a high nutrient level particularly in upwelling zone. It suggests that nutrient may play important role in impacting the distribution of phytoplankton abundance and the community structure in this region.

导出引用

李冬融, 戴鑫烽, 陆斗定, 夏平. 2012年夏季南海西北部网采浮游植物群落结构[J]. 海洋学研究. 2014, 32(3): 87-96 https://doi.org/10.3969/j.issn.1001-909X.2014.03.012

LI Dong-rong, DAI Xin-feng, LU Dou-ding, XIA Ping. Community structure of net-phytoplankton in the northwest South China Sea in the summer of 2012[J]. Journal of Marine Sciences. 2014, 32(3): 87-96 https://doi.org/10.3969/j.issn.1001-909X.2014.03.012

中图分类号： Q948.8

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