Spatial and temporal dynamics of microbial community composition and factors influencing the surface water and sediments of urban rivers

Wang, Hongjie; Liu, Xingchun; Wang, Yali; Zhang, Shengqi; Zhang, Guangming; Han, Yangyang; Li, Mengxiang; Liu, Ling

doi:10.1016/j.jes.2021.10.016

Cited by 47 publications

(27 citation statements)

References 61 publications

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“…In this study, we found that seasons, rather than habitats, perform a crucial role in determining the bacterial communities diversity in subsidence lakes and natural rivers (Figure 2A). In line with previous studies, we also observed the bacterial α-diversity was significantly higher in summer (Zhang et al, 2019a;Wang et al, 2022b; Figure 2A). Several factors could explain this observation.…”

Section: Network Analysis Of Bacterial Communitiessupporting

confidence: 93%

Seasonal succession of microbial community co-occurrence patterns and community assembly mechanism in coal mining subsidence lakes

Fang

Fan

et al. 2023

Front. Microbiol.

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Coal mining subsidence lakes are classic hydrologic characteristics created by underground coal mining and represent severe anthropogenic disturbances and environmental challenges. However, the assembly mechanisms and diversity of microbial communities shaped by such environments are poorly understood yet. In this study, we explored aquatic bacterial community diversity and ecological assembly processes in subsidence lakes during winter and summer using 16S rRNA gene sequencing. We observed that clear bacterial community structure was driven by seasonality more than by habitat, and the α-diversity and functional diversity of the bacterial community in summer were significantly higher than in winter (p < 0.001). Canonical correspondence analysis indicated that temperature and chlorophyll-a were the most crucial contributing factors influencing the community season variations in subsidence lakes. Specifically, temperature and chlorophyll-a explained 18.26 and 14.69% of the community season variation, respectively. The bacterial community variation was driven by deterministic processes in winter but dominated by stochastic processes in summer. Compared to winter, the network of bacterial communities in summer exhibited a higher average degree, modularity, and keystone taxa (hubs and connectors in a network), thereby forming a highly complex and stable community structure. These results illustrate the clear season heterogeneity of bacterial communities in subsidence lakes and provide new insights into revealing the effects of seasonal succession on microbial assembly processes in coal mining subsidence lake ecosystems.

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Section: Network Analysis Of Bacterial Communitiessupporting

confidence: 93%

Seasonal succession of microbial community co-occurrence patterns and community assembly mechanism in coal mining subsidence lakes

Fang

Fan

et al. 2023

Front. Microbiol.

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“…The bacterial communities in the sediments of the Bahe River Basin exhibit high diversity, and the seven primary bacterial families discovered in the present study are consistent with previous reports [58,60]. Researches have proved that environmental factors could be changeable in different season, which could significantly influence the microbial community [39]. Therefore, future research about seasonal transformation of dynamics between environmental factors and microbial community is highly recommended.…”

Section: Response Relationship Between Environmental Factors and Micr...supporting

confidence: 91%

Pattern changes of microbial communities in urban river affected by anthropogenic activities and their environmental driving mechanisms

et al. 2022

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The microbial community structure of sediments in the Bahe River Basin, China was studied using a high-throughput sequencing platform and PCR amplification to investigate the pattern changes in microbial communities in urban rivers affected by anthropogenic activities and their environmental driving mechanisms. The results demonstrated that the average total nitrogen and total phosphorus in the sediments were 524 and 734 mg/kg, respectively. The T, COD and $${\text{NH}}_{4}^{ + }$$ NH 4 + -N of the water and the moisture content of the sediments has significantly impacted on the microbial community structure. Twenty microbial species with a relative abundance > 1% in the sediments of the river were observed, accounting for 95–99% of the total microbial community. The primary species were Proteobacteria (13.86–69.14%), Firmicutes (1.45–58.33%), Chloroflexi (3.68–26.18%), Actinobacteria (2.7–21.51%), Acidobacteria (0.73–16.36%), Bacteroides (1.53–14.11%), and Thermodesulfobacteria (0.1–8.9%), accounting for over 90% of the total microbial community. At the class level, the primary species were γ-proteobacteria, Alphaproteobacteria, Anaerolineae, Bacillus, Bacteroidota, Actinobacteriota, and Clostridia, accounting for over 70% of the total microbial community. Our results provide direct evidence for a link between microbial community structure and environment factors. This evidence demonstrates that sediment microorganisms can be applied to evaluate urban rivers pollution levels, which can provide a scientific basis for pollution control and management in the urban river affected by human activities.

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“…The dominant taxa in the total bacterial community are often considered the most important in community stability and maintenance ( Jiao et al, 2019 ). On this foundation, we observed that Proteobacteria classes, namely Alpha- and Gammaproteobacteria, were enriched during active fish farming periods across all fish farms, and it is reasonable to infer inorganic nitrogen in seawater as a potential major contributing factor ( Wang et al, 2023 ). Using TIN as an intuitive gradient, we further observed significantly reduced alpha diversity in inactive fish farms compared to its active counterparts, both during the wet season and throughout the year.…”

Section: Discussionmentioning

confidence: 87%

How elevated nitrogen load affects bacterial community structure and nitrogen cycling services in coastal water

Lee

et al. 2022

Front. Microbiol.

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Nutrient pollution in the coastal environment has been accelerated by progressively intensifying aquaculture activities. Excessive nutrients can lead to coastal eutrophication with serious economic and ecological consequences. In this study, we studied coastal planktonic microbial community over a year to understand the aquaculture impact on coastal water quality and function. We observed increased total inorganic nitrogen concentrations in active fish farms to favor the diverse Alpha- and Gammaproteobacteria. Bacterial community alpha diversity in fish farms was positively correlated with total inorganic nitrogen, and active fish farming co-influenced the bacterial structural composition and regional beta diversity. By analyzing the nitrogen cycle-related functional compositions and pathways using PICRUSt2 prediction on inferred genomes, we identified the contribution of over 600 bacterial species to four major pathways. Enhanced nitrogen load in active fish farms was positively correlated with elevated dissimilatory nitrate reduction and denitrification pathway abundances. Fallowed fish farms were characterized by a predicted high abundance of nirA and narB genes contributing to assimilatory nitrate reduction pathway due to the prevalence of Cyanobacteria. Overall, these results suggested active operation and short hiatus in coastal aquaculture practices could rapidly impact planktonic bacterial communities and further influence nitrogen cycling and associated processes. These findings will improve the understanding of the responses and interactions between microbiome and aquaculture activities. In a world of increasing aquaculture demands, this work has important implications for sustainable water resource management and development.

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Spatial and temporal dynamics of microbial community composition and factors influencing the surface water and sediments of urban rivers

Cited by 47 publications

References 61 publications

Seasonal succession of microbial community co-occurrence patterns and community assembly mechanism in coal mining subsidence lakes

Seasonal succession of microbial community co-occurrence patterns and community assembly mechanism in coal mining subsidence lakes

Pattern changes of microbial communities in urban river affected by anthropogenic activities and their environmental driving mechanisms

How elevated nitrogen load affects bacterial community structure and nitrogen cycling services in coastal water

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