Evaluation of yeast inoculum seeding on the remediation of water and sediment in an urban river

2017 ◽  
Vol 95 (11) ◽  
pp. 2038-2047
Author(s):  
Yin-qi Tang ◽  
Yu-chao Chen ◽  
Su-yun Chang ◽  
Meng Li ◽  
Jing-mei Sun
Keyword(s):  
Urban River ◽  
Water And Sediment ◽  
Yeast Inoculum

Variations of Environmental Parameters and Ecological Response in an Urban River

1993 ◽  
Vol 27 (12) ◽  
pp. 191-194 ◽  
Author(s):  
G. M. Morrison ◽  
C. Wei ◽  
M. Engdahl
Keyword(s):  
Sediment Toxicity ◽  
Sediment Quality ◽  
Stormwater Runoff ◽  
Quality Criteria ◽  
Environmental Parameters ◽  
Urban Runoff ◽  
Urban River ◽  
Noticeable Effect ◽  
Water And Sediment ◽  
Water And Sediment Quality

Water and sediment quality deterioration in an urban river was assessed during and after stormwater runoff and sewer overflow. Stormwater runoff bad a noticeable effect on continuous measurements of water quality in the urban river; oxygen sag and increased conductivity was a typical response. Sediment toxicity was found at sites directly exposed to urban runoff, while concentrations of copper and lead exceeded sediment quality criteria. The enzyme activity of the sediment-dwelling bacteria was found to be more sensitive with inhibition downstream and upstream of urban discharge.

scholarly journals Characteristics of planktonic and sediment bacterial communities in a heavily polluted urban river

PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e10866
Author(s):  
Heqing Huang ◽  
Jianhui Liu ◽  
Fanghui Zhang ◽  
Kangwen Zhu ◽  
Chunhua Yang ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Bacterial Communities ◽  
High Throughput Sequencing ◽  
Bacterial Community Composition ◽  
Urban River ◽  
Urban Rivers ◽  
Sediment Samples ◽  
Water And Sediment ◽  
Sediment Bacterial Communities ◽  
Water And Sediment Samples

Urban rivers represent a unique ecosystem in which pollution occurs regularly, altering the biogeochemical characteristics of waterbodies and sediments. However, little is presently known about the spatiotemporal patterns of planktonic and sediment bacterial community diversities and compositions in urban rivers. Herein, Illumina MiSeq high-throughput sequencing was performed to reveal the spatiotemporal dynamics of bacterial populations in Liangtan River, a heavily polluted urban river in Chongqing City (China). The results showed the richness and diversity of sediment bacteria were significantly higher than those of planktonic bacteria, whereas a strong overlap (46.7%) in OTUs was identified between water and sediment samples. Bacterial community composition remarkably differed in waters and sediments. Planktonic bacterial communities were dominated by Proteobacteria, Bacteroidetes, Cyanobacteria and Actinobacteria, while sediment bacterial communities mainly included Proteobacteria, Actinobacteria, Chloroflexi and Bacteroidetes. Additionally, several taxonomic groups of potential bacterial pathogens showed an increasing trend in water and sediment samples from residential and industrial areas (RI). Variation partition analysis (VPA) indicated that temperature and nutrient were identified as the main drivers determining the planktonic and sediment bacterial assemblages. These results highlight that bacterial communities in the polluted urban river exhibit spatiotemporal variation due to the combined influence of environmental factors associated with sewage discharge and hydropower dams.

Toxicity of water and sediment in a small urban river (Store Vejleå, Denmark)

2006 ◽  
Vol 144 (2) ◽  
pp. 621-625 ◽  
Author(s):  
Anne Munch Christensen ◽  
Fumiyuki Nakajima ◽  
Anders Baun
Keyword(s):  
Urban River ◽  
Water And Sediment
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