刘璐, 李艳, 孙萍, 王宗灵, 辛明. 钦州湾外湾海域浮游植物群落结构季节变化及其影响因素分析[J]. 海洋环境科学, 2020, 39(5): 776-784, 790. DOI: 10.12111/j.mes.20190094
引用本文: 刘璐, 李艳, 孙萍, 王宗灵, 辛明. 钦州湾外湾海域浮游植物群落结构季节变化及其影响因素分析[J]. 海洋环境科学, 2020, 39(5): 776-784, 790. DOI: 10.12111/j.mes.20190094
LIU Lu, LI Yan, SUN Ping, WANG Zong-ling, XIN Ming. Seasonal changes of phytoplankton community structure and its influencing factors in Qinzhou bay[J]. Chinese Journal of MARINE ENVIRONMENTAL SCIENCE, 2020, 39(5): 776-784, 790. DOI: 10.12111/j.mes.20190094
Citation: LIU Lu, LI Yan, SUN Ping, WANG Zong-ling, XIN Ming. Seasonal changes of phytoplankton community structure and its influencing factors in Qinzhou bay[J]. Chinese Journal of MARINE ENVIRONMENTAL SCIENCE, 2020, 39(5): 776-784, 790. DOI: 10.12111/j.mes.20190094

钦州湾外湾海域浮游植物群落结构季节变化及其影响因素分析

Seasonal changes of phytoplankton community structure and its influencing factors in Qinzhou bay

  • 摘要: 2013—2014年在钦州湾外湾海域共进行了4次现场调查,研究了水采浮游植物群落结构季节变化特征及其与环境因子的相关关系。共鉴定出浮游植物8门71属148种(包括变型和变种),群落组成以硅藻为主,甲藻次之。优势种仅在2014年12月为定鞭藻球形棕囊藻(Phaeocystis globosa),其他航次均为多种硅藻,并多为广温性种。不同站位、不同季节的浮游植物物种组成和细胞丰度差异明显。除2014年12月,其他3个航次浮游植物群落多样性指数及均匀度指数较高,群落结构较稳定;2014年12月钦州湾爆发棕囊藻赤潮,与环境条件密切相关,对该海域浮游植物群落结构组成造成影响。使用PRIMER 6进行多元统计分析表明,4个航次浮游植物群落结构存在显著性差异,丰度与环境因子之间有良好的相关性,其中丰度在2013年11月和2014年12月与氮存在较好的相关性;在2014年4月也体现出与无机磷较好的相关性;温度、盐度与丰度相关性主要体现在2014年8月。调查研究发现近年来,钦州湾浮游植物群落结构较为稳定。

     

    Abstract: The present study investigated the seasonal variation characteristics of phytoplankton community structure and its correlation with environmental factors in Qinzhou bay based on four cruises carried out from 2013 to 2014. The results showed that total of 148 species, including forma and varieties, which belonged to 8 phyla and 71 genera were identified. Amongst, species in Bacillariophyta are in the majority, and species in Pyrrophyta are in the minority. In our cruises, most dominant species belonged to eurythermal diatoms. It was noteworthy that Phaeocystis globosa was considered a dominant species due to the algal bloom in the cruise of December 2014. Except for December 2014, phytoplankton community during the other three cruises showed high community diversity index and evenness index thereby suggested that the community structure of phytoplankton was comparatively stable in Qinzhou bay. The Phaeocystis globosa bloom did damage on the structure of phytoplankton community and stability of ecosystem. It was closely related to environmental conditions. The multivariate statistical analysis of phytoplankton community in Qinzhou bay was carried on by using PRIMER 6 software. The result showed that there were significant differences in phytoplankton community structure during four cruises. There was correlation between phytoplankton abundance and environmental factors. There was a good correlation between abundance and nitrogen in 2013-11 and 2014-12. The correlation between abundance and inorganic phosphorus was significant in April, 2014.The correlation of the temperature and salinity was shown in 2014-08. In recent years, the structure of phytoplankton community in Qinzhou bay is relative stable.

     

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