广西科学2024，Vol.31Issue(2)：224-236,13.DOI:10.13656/j.cnki.gxkx.20240419.001
广西涠洲岛海域浮游植物群落结构季节变化特征及环境影响因素
Seasonal Variation Characteristics of Phytoplankton Community Structure and Environmental Impact Factors in the Weizhou Is-land,Guangxi
摘要
Abstract
In order to understand the seasonal variation characteristics of phytoplankton community structure and its environmental impact factors in the habitat of Balaenoptera edeni in Weizhou Island,Guangxi,and to analyze the relationship between the seasonal variation of phytoplankton community structure characteristics and the seasonal migration of B.edeni,the phytoplankton in the habitat of B.edeni in Weizhou Island,Guan-gxi were systematically investigated in January(winter),April(spring),August(summer)and November(autumn)in 2022.A total of 115 species of phytoplankton belonging to 54 genera and 3 phyla were identified throughout the year.The species composition was dominated by Bacillariophyta(93 species)and Pyrrophyta(19 species).The seasonal difference of phytoplankton species composition was not obvious,but the dominant species changed significantly,and the dominant groups also changed greatly.Among them,Bacillariophyta was the most dominant group in winter and spring,and the dominant species also belonged to Bacillariophy-ta.However,in summer and autumn,the dominant groups changed to be composed of Bacillariophyta,Pyrro-phyta and Cyanophyta.The density of phytoplankton cells also changed greatly,with the highest in spring,the second in winter,and the lowest in summer and autumn.Redundancy Analysis(RDA)of phytoplankton and environmental factors showed that nutrients,Water Temperature(WT)and Salinity(S)were the main environmental factors affecting the seasonal variation of phytoplankton cell density and dominant species structure.The migration of B.edeni into Weizhou Island in winter and spring,and out of Weizhou Island in summer and autumn were consistent with the seasonal variation of phytoplankton cell density.Phytoplank-ton,as a primary producer,may affect the migration of the top trophic marine organism B.edeni through the upward control of the food web.关键词
涠洲岛/浮游植物/群落结构/季节变化/影响因素/布氏鲸Key words
Weizhou Island/phytoplankton/community structure/seasonal change/impact factors/Balae-noptera edeni分类
生物科学引用本文复制引用
林佳,林海英,骆鑫,郭梅修,黎明民,庞碧剑,黄雄良,王宙,蓝文陆..广西涠洲岛海域浮游植物群落结构季节变化特征及环境影响因素[J].广西科学,2024,31(2):224-236,13.基金项目
广西重点研发计划项目(AB20297018、AB22035065、AB22035035、AB20297037)和北部湾海洋生态环境广西野外科学观测研究站科研能力建设项目(桂科23-026-271)资助. （AB20297018、AB22035065、AB22035035、AB20297037）
