标题: Patterns of bacterial and archaeal communities in sediments in response to dam construction and sewage discharge in Lhasa River
作者: Tao, K (Tao, Ke); Liu, YX (Liu, Yaxi); Ke, T (Ke, Tan); Zhang, YR (Zhang, Yurui); Xiao, L (Xiao, Ling); Li, SX (Li, Shuangxi); Wei, SJ (Wei, Sijie); Chen, LZ (Chen, Lanzhou); Hu, TS (Hu, Tiesong)
来源出版物: ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 卷: 178 页: 195-201 DOI: 10.1016/j.ecoenv.2019.03.107 出版年: AUG 30 2019
摘要: The increased anthropogenic activities in the Tibetan Plateau may threaten the river environmental safety. However, limited information is available on the Lhasa River in the Tibetan Plateau, which is known as the remaining pure land on Earth. Here, we firstly investigated the distribution patterns of bacterial and archaeal communities in sediments in response to dam construction and sewage discharge along the reaches of the Lhasa River. The total organic carbon, total Nitrogen (N), nitrate and ammonium contents and the relative abundance of bacteria and archaea significantly increased in reservoir sites in comparison with sites below dam, and they also gradually increased from upstream to downstream in sewage discharge sites. By contrast, the diversity of sediment bacteria and archaea in reservoir sites were significantly less than that in sites below dam and sewage discharge sites at Operational Taxonomic Units (OTUs) level. The dominant species were water-bloom cyanoba cteria in the reservoir area of Zhikong Dam and Proteobacteria in the sewage discharge sites, which were significantly correlated with the nutrient concentration. The abundance of nitrogen functional genes significantly also increased in reservoir sites and the downstream of sewage discharge areas. These results suggested that dam construction and sewage discharge caused the increase of sediment bacterial communities and nutrient levels and potentially induced eutrophication in the Lhasa River.
作者关键词: Lhasa river; Sediment; Anthropogenic activities; Sedimentary bacterial communities; Quantitative real-time polymerase chain reaction (qPCR); High-throughput sequencing
KeyWords Plus: AMMONIA-OXIDIZING ARCHAEA; 3 GORGES DAM; MICROBIAL COMMUNITIES; CHANGJIANG RIVER; DIVERSITY; WATER; IMPACTS; HYDROPOWER; CHINA
地址: [Tao, Ke; Liu, Yaxi; Ke, Tan; Zhang, Yurui; Xiao, Ling; Li, Shuangxi; Wei, Sijie; Chen, Lanzhou] Wuhan Univ, Hubei Res Ctr Environm Remediat Technol, Hubei Key Lab Biomass Resource Chem & Environm Bi, Sch Resource & Environm Sci, Wuhan 430079, Hubei, Peoples R China.
[Hu, Tiesong] Wuhan Univ, Dept Water Resources & Hydropower Engn, Wuhan 430000, Hubei, Peoples R China.
通讯作者地址: Chen, LZ (通讯作者)，Wuhan Univ, Hubei Res Ctr Environm Remediat Technol, Hubei Key Lab Biomass Resource Chem & Environm Bi, Sch Resource & Environm Sci, Wuhan 430079, Hubei, Peoples R China.
Hu, TS (通讯作者)，Wuhan Univ, Dept Water Resources & Hydropower Engn, Wuhan 430000, Hubei, Peoples R China.
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