Response mechanism of bacterial community and physicochemical factors evolution to ecological restoration in sediment and water dual medium of Baiyangdian Lake

Journal of Water Process Engineering, Год журнала: 2025, Номер 70, С. 106949 - 106949

Опубликована: Янв. 9, 2025

Язык: Английский

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Organophosphate esters inhibit enzymatic proteolysis through non-covalent interactions

Environment International, Год журнала: 2025, Номер 195, С. 109256 - 109256

Опубликована: Янв. 1, 2025

Enzymatic proteolysis is the key process to produce bioavailable nitrogen in natural terrestrial and aquatic ecosystems for microorganisms plants. However, little known on how protein degradation influenced by organic contaminants. As we known, overuse of organophosphate esters (OPEs) has caused serious pollution soil, water, sediment. Thereby studied effect OPEs GB1 aqueous system at neutral pH, explored underlying molecular mechanism. Colorimetric ninhydrin methods SDS-PAGE results revealed that inhibited enzymatic hydrolysis GB1. Based fluorescence quenching experiments, binding constant (LogK

Язык: Английский

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Decomposition Processes and Characteristics of Wetland Plant Residues: Impacts of Biomass, Sediment, Living V. spinulosa Yan

Water, Год журнала: 2025, Номер 17(2), С. 135 - 135

Опубликована: Янв. 7, 2025

The decomposition of submerged plants is an important factor affecting water quality and microbial community structure aquatic ecosystems. This study aims to investigate the effects process V. spinulosa Yan residues on receiving under different conditions, including biomass weight, sediment component, living Yan. results showed that optimal for was 0.3 g/L. sand–soil mixture (3:7) lowest rate (90.4%) due poor moisture retention sand lack organic matter minerals, which slowed down process. N P could be released into rapidly through decomposing residues, concentrations TP, TN, PO43−-P were positively correlated with residues. decrease in TN TP observed bioceramic Fe-C ceramic partly their porous structures promoting attachment adsorption P, possibly also increase Firmicutes. After planting Yan, concentrations, as well dissolved oxygen levels, lower groups compared those control group without suggests effectively purifies by absorbing nutrients nitrification–denitrification processes. These differences underscore active role nutrient removal. provides a scientific basis management plants.

Язык: Английский

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Restoration of submerged vegetation mitigates internal nitrogen and phosphorus loading in a shallow lake

Plant and Soil, Год журнала: 2025, Номер unknown

Опубликована: Фев. 26, 2025

Язык: Английский

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Nitrogen removal performance and microbial community characteristics of a submerged macrophyte pond–constructed wetland composite system

Journal of Water Process Engineering, Год журнала: 2025, Номер 72, С. 107492 - 107492

Опубликована: Март 20, 2025

Язык: Английский

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Non-synergistic effects of microplastics and submerged macrophytes on sediment microorganisms involved in carbon and nitrogen cycling

Environmental Pollution, Год журнала: 2025, Номер unknown, С. 126213 - 126213

Опубликована: Апрель 1, 2025

Язык: Английский

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Restoration of submerged vegetation modulates microbial communities to decrease nitrogen and phosphorus loads in sediment-water systems

Water Research, Год журнала: 2024, Номер 269, С. 122835 - 122835

Опубликована: Ноя. 23, 2024

Язык: Английский

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Quantification of heavy metal contamination and source in urban water sediments using a statistically determined geochemical baseline

Environmental Research, Год журнала: 2024, Номер unknown, С. 120080 - 120080

Опубликована: Сен. 1, 2024

Язык: Английский

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Neglected Dissimilatory Nitrate Reduction to Ammonium Pathway of Nitrate Reduction in the Chinese Marginal Sea and Its Microbial Community Assembly Driven by Stochastic Processes

ACS ES&T Water, Год журнала: 2024, Номер 4(4), С. 1579 - 1589

Опубликована: Фев. 10, 2024

Nitrate reduction as a key process of the marine biological nitrogen cycle has received significant attention, yet little is known about transformation and fate nitrate in marginal seas, which bear higher loads pollution. In this study, we took Bohai Yellow Sea (BYS) an example proposed large-scale measurement transformations sea, with aim exploring imprint microbial mechanisms BYS. Our results showed that dissimilatory to ammonium (DNRA) made non-negligible contribution BYS, particularly Sea, average DNRA rate up 8.15 ± 6.30 μmol N/L/h. Pelobacter Opitutus played important roles "module hubs" "connectors" intraspecific network. The moisture content, concentration total nitrogen, sulfur, NH4+–N sediments, well bottom water temperature conductivity had correlation DNRA-dominant keystone species. However, community assembly was strongly driven by stochastic processes Specifically, homogeneous dispersal ecological drift contributed 16.3% 72.1% respectively. To best our knowledge, first report on mechanism communities. patterns drivers detected study may induce novel insights into release, retention, removal seas.

Язык: Английский

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Different macrophytes and eutrophic gradients regulate microbial communities of phytoremediation for eutrophication pollution and carbon reduction

Journal of Cleaner Production, Год журнала: 2024, Номер 473, С. 143536 - 143536

Опубликована: Авг. 31, 2024

Язык: Английский

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