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Microbial diversity accumulates in a downstream direction in the Three Gorges Reservoir
Wang, Shang; Hou, Weiguo; Jiang, Hongchen; Huang, Liuqin; Dong, Hailiang; Chen, Shu; Wang, Bin; Chen, Yongcan; Lin, Binliang; Deng, Ye
2021-03
Source PublicationJOURNAL OF ENVIRONMENTAL SCIENCES
ISSN1001-0742
Volume101Pages:156-167
AbstractOrganic and inorganic materials migrate downstream and have important roles in regulating environmental health in the river networks. However, it remains unclear whether and how a mixture of materials (i.e., microbial species) from various upstream habitats contribute to microbial community coalescence upstream of a dam. Here we track the spatial variation in microbial abundance and diversity in the Three Gorges Reservoir based on quantitative PCR and 16S rRNA gene high-throughput sequencing data. We further quantitatively assess the relative contributions of microbial species from mainstem, its tributaries, and the surrounding riverbank soils to the area immediately upstream of the Three Gorges Dam (TGD). We found an increase of microbial diversity and the convergent microbial distribution pattern in areas immediately upstream of TGD, suggesting this area become a new confluence for microbial diversity immigrating from upstream. Indeed, the number of shared species increased from upstream to TGD but unique species decreased, indicating immigration of various sources of microbial species overwhelms local environmental conditions in structuring microbial community close to TGD. By quantifying the sources of microbial species close to TGD, we found little contribution from soils as compared to tributaries, especially for sites closer to TGD, suggesting tributary microbes have greater influence on microbial diversity and environmental health in the Three Gorges Reservoir. Collectively, our results suggest that tracking microbial geographic origin and evaluating accumulating effects of microbial diversity shed light on the ecological processes in microbial communities and provide information for regulating aquatic ecological health. (C) 2020 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
Department中国科学院环境生物技术重点实验室
KeywordThree Gorges Dam Microbial source tracking Microbial community coalescence Immigration Accumulating effect
WOS Research AreaEnvironmental Sciences
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/46126
Collection中国科学院环境生物技术重点实验室
Affiliation1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, CAS Key Lab Environm Biotechnol, Beijing 100085, Peoples R China
2.Southwest Univ Sci & Technol, Sch Environm & Resource, Mianyang 621010, Sichuan, Peoples R China
3.China Univ Geosci, State Key Lab Biogeol & Environm Geol, Beijing 100083, Peoples R China
4.China Univ Geosci, Sch Ocean Sci, Beijing 100083, Peoples R China
5.China Univ Geosci, State Key Lab Biogeol & Environm Geol, Wuhan 430074, Peoples R China
6.Tsinghua Univ, Dept Hydraul Engn, Beijing 100084, Peoples R China
Recommended Citation
GB/T 7714
Wang, Shang,Hou, Weiguo,Jiang, Hongchen,et al. Microbial diversity accumulates in a downstream direction in the Three Gorges Reservoir[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2021,101:156-167.
APA Wang, Shang.,Hou, Weiguo.,Jiang, Hongchen.,Huang, Liuqin.,Dong, Hailiang.,...&Deng, Ye.(2021).Microbial diversity accumulates in a downstream direction in the Three Gorges Reservoir.JOURNAL OF ENVIRONMENTAL SCIENCES,101,156-167.
MLA Wang, Shang,et al."Microbial diversity accumulates in a downstream direction in the Three Gorges Reservoir".JOURNAL OF ENVIRONMENTAL SCIENCES 101(2021):156-167.
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