Different response of bacterial community to the changes of nutrients and pollutants in sediments from an urban river network

2020 ◽  
Vol 14 (2) ◽  
Author(s):  
Fang Zhang ◽  
Hao Zhang ◽  
Ying Yuan ◽  
Dun Liu ◽  
Chenyu Zhu ◽  
...  
Keyword(s):  
Bacterial Community ◽  
River Network ◽  
Urban River ◽  
Different Response

How sediment bacterial community shifts along the urban river located in mining city

2021 ◽  
Author(s):  
Chao Wang ◽  
Sheng Liu ◽  
Peifang Wang ◽  
Juan Chen ◽  
Xun Wang ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Urban River ◽  
Mining City ◽  
Community Shifts ◽  
Sediment Bacterial Community

Risk prediction of microcystins based on water quality surrogates: A case study in a eutrophicated urban river network

2021 ◽  
Vol 275 ◽  
pp. 116651
Author(s):  
Xinchen He ◽  
Hua Wang ◽  
Wei Zhuang ◽  
Dongfang Liang ◽  
Yanhui Ao
Keyword(s):  
Water Quality ◽  
Risk Prediction ◽  
River Network ◽  
Urban River

Indirect effect of nutrient accumulation intensified toxicity risk of metals in sediments from urban river network

2019 ◽  
Vol 27 (6) ◽  
pp. 6193-6204 ◽  
Author(s):  
Yuquan Wei ◽  
Hao Zhang ◽  
Ying Yuan ◽  
Yingshuang Zhao ◽  
Guanghe Li ◽  
...  
Keyword(s):  
Indirect Effect ◽  
River Network ◽  
Urban River ◽  
Nutrient Accumulation ◽  
Toxicity Risk

scholarly journals Bacterial Community Shifts Driven by Nitrogen Pollution in River Sediments of a Highly Urbanized City

2019 ◽  
Vol 16 (20) ◽  
pp. 3794 ◽  
Author(s):  
Xianbiao Lin ◽  
Dengzhou Gao ◽  
Kaijun Lu ◽  
Xiaofei Li
Keyword(s):  
Bacterial Community ◽  
River Sediments ◽  
Nitrogen Pollution ◽  
Urban River ◽  
Urban Rivers ◽  
Negative Effects ◽  
Rapid Urbanization ◽  
Community Shifts ◽  
Bacterial Richness ◽  
Relative Abundances

Effects of nitrogen pollution on bacterial community shifts in river sediments remain barely understood. Here, we investigated the bacterial communities in sediments of urban and suburban rivers in a highly urbanized city, Shanghai. Sediment nitrate (NO3−) and ammonia (NH4+) were highly accumulated in urban river. Operation Taxonomic Units (OTUs), Abundance-based Coverage Estimators (ACEs) and Chao 1 estimator in urban rivers were slightly lower than those in suburban rivers, while Shannon and Simpson indices were higher in urban rivers than those in suburban rivers. Proteobacteria, Firmicutes, and Bacteroidetes were the dominant bacterial phylum communities, accounting for 68.5–84.9% of all communities. In particular, the relative abundances of Firmicutes and Nitrospirae were significantly higher in suburban rivers than in urban rivers, while relative abundances of Bacteroidetes, Verrucomicrobia, and Spirochaetes were significantly lower in suburban rivers than in urban rivers. NH4+ was significantly and negatively correlated with abundances of Firmicutes, Nitrospirae, and Actinobacteria. Importantly, the significant and negative effects of sediment NH4+ on bacterial richness and diversity suggested that nitrogen pollution likely contribute to the decrease in the bacterial richness and diversity. The results highlight that nitrogen enrichment could drive the shifts of bacterial abundance and diversity in the urban river sediments where are strongly influenced by human activities under the rapid urbanization stress.

scholarly journals Impact of long-term industrial contamination on the bacterial communities in urban river sediments

2020 ◽  
Author(s):  
Lei Zhang ◽  
Demei Tu ◽  
Xingchen Li ◽  
Wenxuan Lu ◽  
Jing Li
Keyword(s):  
Community Structure ◽  
Microbial Community ◽  
Bacterial Community ◽  
Bacterial Communities ◽  
Industrial Pollution ◽  
River Sediments ◽  
Urban River ◽  
Industrial Contamination ◽  
Different Types

Abstract Background: The contamination of the aquatic environment of urban rivers with industrial wastewater has affected the abiotic conditions and biological activities of the trophic levels of the ecosystem, particularly sediments. However, most current research about microorganism in urban aquatic environments has focused on indicator bacteria related to feces and organic pollution. Meanwhile, they ignored the interactions among microorganisms. To deeply understand the impact of industrial contamination on microbial community, we study the bacterial community structure and diversity in river sediments under the influence of different types of industrial pollution by Illumina MiSeq high-throughput sequencing technology and conduct a more detailed analysis of microbial community structure through co-occurrence networks.Results: The overall community composition and abundance of individual bacterial groups differed between samples. In addition, redundancy analysis indicated that the structure of the bacterial community in river sediments was influenced by a variety of environmental factors. TN, TP, TOC and metals (Cu, Zn and Cd) were the most important driving factors that determined the bacterial community in urban river sediments (P <0.01). According to PICRUSt analysis, the bacterial communities in different locations had similar overall functional profiles. It is worth noting that the 15 functional genes related to xenobiotics biodegradation and metabolism were the most abundant in the same location. The non-random assembly patterns of bacterial composition in different types of industrially polluted sediments were determined by a co-occurrence network. Environmental conditions resulting from different industrial pollutants may play an important role in determining their co-occurrence patterns of these bacterial taxa. Among them, the bacterial taxa involved in carbon and nitrogen cycles in module I were relatively abundant, and the bacterial taxa in module II were involved in the repair of metal pollution.Conclusions: Our data indicate that long-term potential interactions between different types of industrial pollution and taxa collectively affect the structure of the bacterial community in urban river sediments.

Sign in / Sign up

Export Citation Format

Share Document