scholarly journals Bacterial communities in cascade reservoirs along a large river

2021 ◽  
Author(s):  
Qiuwen Chen ◽  
Yuchen Chen ◽  
Jun Yang ◽  
Stephen C. Maberly ◽  
Jianyun Zhang ◽  
...  
Keyword(s):  
Bacterial Communities ◽  
Large River ◽  
Cascade Reservoirs

scholarly journals Human Fecal Contamination Corresponds to Changes in the Freshwater Bacterial Communities of a Large River Basin

2021 ◽  
Author(s):  
Jill S. McClary-Gutierrez ◽  
Zac Driscoll ◽  
Cheryl Nenn ◽  
Ryan J. Newton
Keyword(s):  
Microbial Community ◽  
Health Risk ◽  
Surface Waters ◽  
Water Body ◽  
Bacterial Communities ◽  
Human Health Risk ◽  
Large River ◽  
Ecological Quality ◽  
Feasible Method ◽  
Mixed Use

Surface waters in highly developed mixed-use watersheds are frequently impacted by a wide variety of pollutants, leading to a range of impairments that must be monitored and remediated. With advancing technologies, microbial community sequencing may soon become a feasible method for routine evaluation of the ecological quality and human health risk of a water body.

scholarly journals Spatiotemporal variation of bacterial communities in three cascade reservoirs in a southern city of China

2021 ◽  
Author(s):  
Guangqiang Cai ◽  
Tonghzou Liu ◽  
Jinsong Zhang ◽  
Haoran Song ◽  
Xiaoyan Lu ◽  
...  
Keyword(s):  
Drinking Water ◽  
Bacterial Community ◽  
Relative Abundance ◽  
Bacterial Communities ◽  
Water Sources ◽  
Spatiotemporal Variation ◽  
Community Diversity ◽  
Water Current ◽  
Cascade Reservoirs ◽  
Bacterial Community Diversity

Abstract Reservoirs are important water sources of urban drinking water supply. Bacteria play an important role in the removal of organics in reservoirs, but part of them can pose heath risk to consumers. Knowledge of bacterial community composition in drinking water sources can favour the drinking water security safeguards. This study investigated the composition and diversity of bacterial communities in the three cascade reservoirs by high-throughput Illumina HiSeq sequencing in a whole hydrological year monthly. The diversity and structure of bacterial community showed distinct spatiotemporal variation. Mycobacterium, Acinetobacter, Sphingomonas, Sphingobacterium and Pseudomonas were the genera resistant to chlorine. In addition, Acinetobacter, Arcobacter, Mycobacterium, Pseudomonas and Staphylococcus were the main potential pathogenic genera. The bacterial community diversity and the average relative abundance of potential pathogenic genera detected in wet season were higher than those in dry season. Besides, water temperature was found the main factor for the temporal variation. The spatial variation of bacterial community diversity and the average relative abundance of potential pathogenic genera were found related to water current and the degree of water pollution, respectively. The results of this study can conduce to the beneficial management of the drinking water treatment processes.

Key Construction Technologies for Large River-Crossing Slurry Shield Tunnel: Case Study

2021 ◽  
Vol 34 (2) ◽  
pp. 04020118
Author(s):  
Song Zhou ◽  
Guan-Lin Ye ◽  
Lei Han ◽  
Wang Jian-Hua
Keyword(s):  
Large River ◽  
Shield Tunnel ◽  
Slurry Shield
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