Microbial community dynamics and mechanistic insights into rapid ammonia nitrogen removal via Acinetobacter harbinensis HITLi7T enhanced activated carbon

Journal of Environmental Management, Год журнала: 2025, Номер 375, С. 124350 - 124350

Опубликована: Янв. 31, 2025

Язык: Английский

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Response of the microbial community structure to the environmental factors during the extreme flood season in Poyang Lake, the largest freshwater lake in China

Frontiers in Microbiology, Год журнала: 2024, Номер 15

Опубликована: Апрель 3, 2024

Background Poyang Lake is the largest freshwater lake in China, and there are several studies on composition diversity of bacteria Lake, while few quantitative were carried out response bacterial community to environmental factors during extreme flood season Lake. Methods The connected-lake heterogeneity (BCC) was investigated 2020. Illumina high-throughput sequencing technology used this study. Results structure water different from that sediment seasons. much lower than sediment. In column, dominant phyla Actinobacteriota , more complex water, Proteobacteria, Chloroflexi, Acidobacteriota . showed seasonal dynamics, no variation communities observed. two bays channel areas can be distinguished each other. microbial gradually increased Sancha Bay Zhouxi then channel, but total nitrogen (TN) concentration (STN) phosphorus (TP) (STP) opposite trends. This might due anthropogenic disturbances flood. in, column significantly correlated with WT, NH4-N, STP, SOM, Chl a, DO, TP, Eh, SOM STP. Conclusion greatly not only sensitive geochemical characteristics also affected by some nutrient concentrations During wet seasons,

Язык: Английский

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Impact of Biochar Addition on Biofloc Nitrifying Bacteria and Inorganic Nitrogen Dynamics in an Intensive Aquaculture System of Shrimp

Microorganisms, Год журнала: 2024, Номер 12(12), С. 2581 - 2581

Опубликована: Дек. 13, 2024

In this study, an eight-week culture trial of Penaeus vannamei juveniles was conducted in commercial intensive systems to compare the impacts biochar and molasses addition on biofloc nitrifying bacteria inorganic nitrogen dynamics under limited water exchange conditions. During trial, concentration (in terms VSS TSS), quantities total (TB) Vibrio (TV), ratio TV/TB were lower group compared group. Metagenomic sequencing analysis revealed that bacterial community composition bioflocs showed higher α-diversity complexity Moreover, abundance genera functional genes Inorganic NH4+-N NO2−-N better controlled group, as reflected by peaks NO3−-N concentrations. Excellent production performance shrimp achieved, which turn proved reliable effect mediation transformation through bacteria. These results could promote nitrification more effectively control harmful for efficient production. This study provides a practical example application biofloc-based aquaculture.

Язык: Английский

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Water level fluctuation regulated the effect of bacterial community on ecosystem multifunctionality in Poyang Lake wetland

Journal of Environmental Management, Год журнала: 2025, Номер 373, С. 123965 - 123965

Опубликована: Янв. 1, 2025

Язык: Английский

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Heavy Metals in Sediments of the Yangtze River, Poyang Lake and Its Tributaries: Spatial Distribution, Relationship Analysis and Source Apportionment

Water, Год журнала: 2025, Номер 17(9), С. 1295 - 1295

Опубликована: Апрель 26, 2025

The concentration, spatial distribution characteristics, river–lake relationship analysis and source apportionment of heavy metals in the sediments Yangtze River, Poyang Lake its tributaries were studied this work. Heavy detected more frequently River compared with tributaries. V, Cr, Pb Ni dominant lake, V being most abundant lower As, Cu, showed similar patterns, a fan-shaped increasing trend southwestern area Lake. Hg, Cd large variability decreasing from northwest to southeast lake. are related those organic matter, oxidation-reduction potential depth correlated sediments. Mining, industrial road traffic sources main study area. Except for exhibited low ecological risk an environmental evaluation. results might guide future studies on

Язык: Английский

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Influence of the source and molecular weights on sulfathiazole/sulfadiazine binding in sedimentary dissolved organic matter

Journal of Environmental Management, Год журнала: 2025, Номер 386, С. 125795 - 125795

Опубликована: Май 17, 2025

Язык: Английский

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Impacts of oxbow lake evolution on sediment microbial community structure in the Yellow River source region

Environmental Research, Год журнала: 2024, Номер 252, С. 119042 - 119042

Опубликована: Апрель 30, 2024

Язык: Английский

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Epiphytic and endophytic bacteria on Camellia oleifera phyllosphere: exploring region and cultivar effect

BMC Ecology and Evolution, Год журнала: 2024, Номер 24(1)

Опубликована: Май 13, 2024

Abstract The epiphytic and endophytic bacteria play an important role in the healthy growth of plants. Both plant species environmental influence bacterial population diversity, yet it is inconclusive whether former or latter that has a greater impact. To explore communities microbes Camellia oleifera , this study assessed three representative C. cultivars from areas Hunan, China by Illumina high-throughput sequencing. results showed diversity richness microbial community leaves were significantly higher than those epiphytic. are complex when same cultivar was grown different areas. Youxian had highest community, but lowest abundance, while Changsha leaves. It concluded dominant phylum mainly included Proteobacteria, Actinobacteriota Firmicutes through analysis . relative abundances extremely at genus level. NMDS map PERMANOVA shows epiphytes greatly influenced region. However, structure microorganisms region cultivated varieties, more significant. Molecular ecological network symbiotic interaction complex.

Язык: Английский

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Artificial Cultivation of Aquatic Plants Promotes Nitrogen Transformation and Key Functional Genes in Agricultural Drainage Ditch Sediments in the Yellow River Irrigation Area, China

Опубликована: Авг. 12, 2024

Excess nitrogen in agricultural drainage poses a serious threat to the water quality safety of Yellow River basin. Utilizing aquatic plants modify rhizosphere microbial community structure and facilitate transformation is crucial strategy for mitigating regional eutrophication. Our results revealed that denitrification rate (DR), dissimilatory nitrate reduction ammonium (DNRAR) fixation (NFR) sediments exhibited significant increase artificially cultivated ditch. Compared with those natural ditches, richness bacterial relative abundances Bacteroidota, Verrucomicrobiota, Firmicutes, Anaeromyxobacter Geobacter, which are involved mainly cycle, ditch were significantly greater due improvements environmental conditions. In ditch, dominant functional genes affecting DRNARs P. australis nrfC nrfA, while DRs driven by norB napA, influenced carbon levels; NFRs T. orientalis nifD, nifK nifH. provide scientific basis use excess levels drainage.

Язык: Английский

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Rare bacterial taxa drive the ecosystem multifunctionality in lake water-level-fluctuating zone during seasonal water level fluctuations

Journal of Hydrology, Год журнала: 2024, Номер 645, С. 132155 - 132155

Опубликована: Окт. 11, 2024

Язык: Английский

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