Phytoplankton Community Structure and Niche of Dominant Species in Dongping Lake
To understand the community structure characteristics and niche of phytoplankton dominant species in Dongping Lake,four sample surveys were conducted in Dongping Lake located in Central and Western Shandong Province in dry season(May)and wet season(August)in 2018 and 2019.The phytoplankton was analyzed using diversity index,evenness,dominance,niche breadth,and niche overlap index.The results showed that there was high phytoplankton diversity index in Dongping Lake,with the mean of over 3 and evenness of greater than 0.3,the stable and evenly distributed phytoplankton community structure in Dongping Lake.There were better community structure characteristics in 2019 than that in 2018,and better community structure characteristics in the wet season(August)than that in the dry season(May),with medium niche species of the predominant phytoplankton species in Dongping Lake and the niche overlap index of greater than 0.6,accounting for 59.10％,75.00％,61.50％and 74.10％,indicating that the degree of niche overlap of the phytoplankton was higher in Dongping Lake.
phytoplanktoncommunity structure characteristicsdominant speciesniche breadthNiche overlap index
NETL
NSTL
万方数据
