深圳湾浮游植物群落结构特征及其与环境因子的关系

为研究深圳湾海域浮游植物的群落结构及其与水环境的关系,分别于春夏秋冬(2013年8月至2014年4月)四个季度对深圳湾进行采样分析,并对调查区域内的浮游植物及其主要环境因子进行了相关性分析.结果表明,深圳湾海域共鉴定出浮游植物111种(包括变种和变型):硅藻35属86种,甲藻4属15种,绿藻6属6种,蓝藻3属4种,其中...

Community structure of phytoplankton and its relationship to environmental factors in Shenzhen Bay

In order to investigate the phytoplankton community structure and its relationship with the aquatic environmental factors in the Shenzhen bay,samples were collected and analyzed in four quarters from August 2013 to April 2014,and the correlation between phytoplankton and its main environmental factors was analyzed.Results showed that a total of 111 species(including varieties and forma)were identified,of which the most abundant group was Bacillariophyceae,with 35 genera and 86 species that accounted for 77.5%of total species,followed by Pyrrophyta(4 genera and 15 species,13.5%),Chlorophyta(6 genera and 6 species,5%)and Cyanobacteria(3 genera 4 species,4%).Skeletonema costatum was the dominant species.The abundance of phytoplankton cells varied from(28.64-462.46)×10⁴ cells·m^-3,with an average of 156.43×10⁴ cells·m^-3.The maximum cell abundance appeared in the autumn,followed in summer,spring and winter The diversity index of the phytoplankton ranged from 0.11 to 4.06;the evenness of phytoplankton ranged from 0.04 to 0.90.The diversity and evenness of phytoplankton community were rather low,indicating that phytoplankton community was not steady.Better relationship was found between phytoplankton abundance and inorganic nitrogen.