Effects of rainfall on planktonicbacteria community structure in Qingshan Lake
Lake ecosystems play a vital role in regional and global biogeochemical cycles,and the planktonicbacteria are the main participants and contributors to the biogeochemical cycle,which is extremely important for maintaining the diversity of water ecosystems and the stability of lake ecosystems.In the spring of 2018,the Illumina Miseq high-throughput sequencing technology was used to sequence the 16S rRNA ribosomal small subunits for the samples from the Qingshan Lake in Huangshi to explore the effect of rainfall on the structure of planktonicbacterial communities in urban lakes and their interaction with environmental factors.The results showed that both the Proteobacteria and Actinobacteria were the dominant groups before and after the rain.However,the numbers of Actinobacteria and Chloroflexi increased significantly after the rain,while the numbers of Proteobacteria,Cyanobacteria,and Bacteroidetes obviously decreased than before the rain.The composition of the community distinctly changed after the rain,and the diversity of the community increased as well.Total nitrogen(TN)was the main factor affecting the change of planktonicbacteria community structure before and after rain.The ANOSIM results showed that there were significant differences for planktonicbacterial communities in Qingshan Lake before and after rain(P<0.05,R=1).It can be seen that the impact of rainfall on the growth and reproduction of planktonicbacteria in the water area and the water environment cannot be ignored.When the lakes in the city are planned,the impact of rainfall on the lake's ecological environment should be considered.
planktonicbacteriaQingshan Lakehigh-throughput sequencingcommunity structureeffects of rainfallenvironmental factors
万方数据
维普
