Phytoplankton community structure and its relationship with environmental factors in Fengjiawan Marine Pasture
With the aim of understanding the community structure of phytoplankton of Fengjia Marine Pasture in Wenchang City,Han-nan Province,the phytoplankton and environmental factors were investigated in September 2019(autumn)and March 2020(spring).The relationship between phytoplankton community structure and environmental factors was studied by redundancy analysis(RDA).The results showed that,a total of 109 phytoplankton species belonging to 3 phyla and 40 genera were identified,which mainly consist-ed of Bacillariophyta(78 species)and Dinophyta(30 species).The density of phytoplankton was significantly different between sea-sons,and it was significantly higher in autumn than in spring.The main dominant species in autumn was Skeletonema costatum,and the most dominant species was Rhizosolenia robusta in spring.In autumn,the average values of richness index,diversity index and evenness index in the control area were higher than those in the reef area,while in spring,these parameters in the reef area were high-er than those in the control area.The result of redundancy analysis indicated that salinity and water temperature were the main environ-mental factors affecting the community structure in autumn and spring,respectively.
NETL
NSTL
万方数据
