期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2018
卷号：170
期号：5
页码：052037
DOI：10.1088/1755-1315/170/5/052037
语种：English
出版社：IOP Publishing
摘要：The South-to-North water diversion impacts on microbial community niche were investigated in the water receiving area. In this paper, the community structure, niche breadth and overlap of the dominant genus were determined to approach the distribution features of microbes and the community changes in Miyun Reservoir. Our results showed that before water transfer, the main bacteria phylum was Proteobacteria, Bacteroidetes, Cyanobacteria, Firmicutes and Actinobacteria. The niche breadth range (OMI value) of dominate bacteria genus was 0.01~0.54, and the tolerance value range was 0.55~4.56. After water transfer, Proteobacteria, Cyanobacteria, Actinobacteria, Bacteroidetes and Verrucomicrobia were the dominate phylum. The niche breadth range of dominate bacteria genus was 0.00~0.38, and the tolerance value range was 0.55~4.56. It indicated that after water diversion, the relative abundance of the Proteobacteria and Verrucomicrobia increased significantly (p<0.05), and the ecological niche of the genus Candidatus Methylacidiphilum, Chitinophagaceae and OM27 clade was significantly differentiated (p<0.05). The niche overlap results suggested that the inter-species niche competition becomes more intense after the water transfer, which reflected the different utilization ability of each bacteria genus in the new aquatic environment of the Miyun Reservoir.
