南流江河口区春季浮游植物群落结构组成与分布特征

叶又茵; 项鹏; 王磊; 杨燕燕; 王雨; 林茂; 蓝文陆

doi:10.3969/j.issn.0253-4193.2017.10.010

南流江河口区春季浮游植物群落结构组成与分布特征

doi: 10.3969/j.issn.0253-4193.2017.10.010

1.
国家海洋局第三海洋研究所, 福建厦门 361005
2.
广西壮族自治区海洋环境监测中心站, 广西北海 536000

基金项目: 国家海洋局第三海洋研究所基本科研业务费（海三科2015022）；全球变化与海气相互作用专项——海洋生物样品库升级与扩建"专项海洋生物系统分类"（GASI-01-02-04）；国家基金青年科学基金项目"西北冰洋植物群落的时空及其对环境变化的响应"（41506217）。

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出版历程
- 收稿日期: 2017-04-26
- 修回日期: 2017-08-04

The structure and distribution of phytoplankton community in the Nanliu River Estuary during spring

1.
Third institute of Oceanography, State Oceanic Administration, Xiamen 361005, China
2.
Marine Environmental Monitoring Center of Guangxi, Beihai 536000, China

摘要

摘要: 通过2016年3月底现场航次11个站点的调查，应用反相高效液色谱（RP-HPLC）并结合二极管阵列检测器分析技术，分析了春季广西南流江河口区浮游植物光合色素组成，进而由CHEMTAX软件估算全粒级浮游植物的群落结构。结果表明：春季含量较高的浮游植物特征光合色素含量以叶绿素b最高，其次为岩黄藻素；浮游植物的优势类群为隐藻，其次为绿藻和硅藻，它们分别平均占据了浮游植物生物量的54.95%、23.36%和17.37%，其他藻类所占比例很低。南流江河口区浮游植物群落结构东西部入海分支有较大差异：东部分支营养盐较西部分支低，隐藻所占生物量比例最高，其次为绿藻和硅藻，浮游植物群结构与分布受营养盐因素影响较大；西部分支营养盐含量明显比东部分支高，绿藻和硅藻的所占比例有所提升，隐藻的生物量所占比则有所下降，浮游植物群落结构与分布受非营养盐因素的影响较大。南流江河口区浮游植物生物量和群落结构除了受营养盐影响外，还与浊度、盐度等密切相关，表明南流江浊度增加已明显影响着生态系统结构与功能，需要密切关注和进一步研究。
- 光合色素 /
- 浮游植物 /
- 群落结构 /
- 南流江河口
Abstract: The composition and distribution of phytoplankton community were investigated during spring in 2016. Phytoplankton samples were analyzed by RP-HPLC combined with DAD (diode array detector) to determine photosynthetic pigments composition in the study area. Pigments data were converted into phytoplankton composition by software CHEMTAX based on least square method and steepest descent algorithm. Our results showed that chlorophyll b(Chl b), fucoxanthin were the major pigments in the Nanliu River Estuary. Cryptomonas dominated in the phytoplankton community, contributing to 54.95% of the phytoplankton biomass during spring in the Nanliu River Estuary, followed by chlorophytes and diatoms with 23.36% and 17.37%, respectively. The rest of other phytoplankton was rare, which only took less than 10% of all phytoplankton biomass. There were vary greatly in the composition of phytoplankton community between eastern and western branch of Nanliu River. In eastern branch, the nitrate of was lower than western, and cryptomonas dominated in the phytoplankton community, followed by chlorophytes and diatoms, nitrate was the main influence factors to the composition and distribution of phytoplankton community. In western branch, the proportion of chlorophytes and diatoms increased, non-nitrate factor was the main influence factors to the phytoplankton community. Except nitrate, the western phytoplankton community also influenced by turbidity and salinity. The results indicate that turbidity significant influence the structure and function of ecological system.
- photosynthetic pigments /
- phytoplankton /
- community structure /
- Nanliu River

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