Electrochemical degradation of aromatic organophosphate esters: Mechanisms, toxicity changes, and ecological risk assessment

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 480, P. 136455 - 136455

Published: Nov. 7, 2024

Language: Английский

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Uranium contamination mediating soil and ore microbial community assembly at four mining sites, South China

Frontiers in Microbiology, Journal Year: 2025, Volume and Issue: 16

Published: Feb. 19, 2025

Uranium mining presents significant environmental challenges, particularly through radiological contamination affecting soil and water bodies. While microbial communities are known to be influenced by geochemical factors like pH nutrient availability, their responses severe uranium in mine tailing environments remain poorly understood. This study investigated community distributions soils ores at four sites South China explore adaptations contamination. concentrations ranged from 170 18,000 mg/kg, with the most severely contaminated samples dominated Cyanobacteria, which comprised up 49.17% of community. Proteobacteria, such as Sphingomonas, were also abundant, indicating roles radiation resistance, while Acidobacteriota Actinobacteria showed negative uranium. Addition lime neutralize acidity tailings led an increase Gemmatimonadaceae, a family commonly found under oligotrophic conditions. Multivariate statistical analyses confirmed concentration primary factor influencing composition, along values, total nitrogen, contents Fe2O3 SiO2 soils. Co-occurrence network analysis suggested that extremely high disrupted interrelationships, reflecting lived more independently adopted strategies cope intense selective pressure. Intriguingly, dispersal limitation governed 90% assembly high-uranium (>10,000 mg/kg), suggesting isolated ecological niches. Deterministic processes heterogeneous homogeneous selection only relatively moderate low levels. These findings provide insights into dynamics uranium-contaminated related bioremediation strategies.

Language: Английский

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Soil Acidification Destabilizes Terrestrial Ecosystems via Decoupling Soil Microbiome

Global Change Biology, Journal Year: 2025, Volume and Issue: 31(4)

Published: April 1, 2025

Soil microbiome is essential for terrestrial ecosystem preservation. β-diversity information on the former, although dynamic due to its sensitivity environmental conditions driven by climate change, limited. Our knowledge becomes poorer microbiomes subjected gradients, especially those across multiple ecosystems-information important biological conservation management. In this study, using next generation sequencing and machine learning at samples from 207 locations among 4300 km of transects that spanned six typical ecosystems China, we established divergent distance-decay relationships between bacterial eukaryotic communities in response soil pH (pH as proxy edaphic conditions). The findings, pH-decrease results lower (convergent tendency) opposite ones (low pH-high (divergent tendency)). Meanwhile, competition bacteria eukaryotes intensifies while predominant genera are re-structured. Under these circumstances, potential acidification change or other factors could alter into decoupling directions influencing ecosystems' stability. Thus, a pivotal variable not only describes, but also controls, dynamics large scale under ongoing global changes; hence, cornerstone biodiversity China's nature protected areas only.

Language: Английский

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Effects of nitrate (NO3−) stress-induced exacerbated cadmium (Cd2+) toxicity on the inflammatory response, oxidative defense, and apoptosis in juvenile Japanese flounder (Paralichthys olivaceus)

Journal of Environmental Sciences, Journal Year: 2024, Volume and Issue: 152, P. 535 - 548

Published: May 31, 2024

Language: Английский

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