Basic Analyses of Aquatic Biodiversity in the Fenghe-river

Fenghe river is a nature river originating from north of Qinling Mountains, it is fed by glaciers and rain. On its way flowing, changes of its quality are varied, because of the Point and Non-point Source Pollution around. The aquatic biodiversity is a good indicator of the ecosystem that reflect water system's inner characteristics. The community structure of different aquatic microorganisms in Fenghe river were analyzed employing Illumina Genome Analyzer. Changes of the microbial communities are well connected with the water quality, which is also reflected on Taxonomic status of phyla. In the research, 7792 OTUS were get, which were classified into 24 phyla, The most dominant phyla detected in stream habitats were Proteobacteria, Bacteroidetes, Actinobacteria and Firmicutes. Also, 897 genus and 15 dominate genus were analyzed specially. The clustering results showed that Acinetobacter, Yersinia, and Pseudomonas form dominant genus community throughout the Fenghe river and all of them belong to phylum of Proteobacteria. The results of diversity analysis show that the diversity of polluted water is corrected with pollution level.