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, Journal Year: 2025, Volume and Issue: 70, P. 106949 - 106949

Published: Jan. 9, 2025

Language: Английский

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Organophosphate esters inhibit enzymatic proteolysis through non-covalent interactions

Environment International, Journal Year: 2025, Volume and Issue: 195, P. 109256 - 109256

Published: Jan. 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

Language: Английский

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

Water, Journal Year: 2025, Volume and Issue: 17(2), P. 135 - 135

Published: Jan. 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.

Language: Английский

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

Plant and Soil, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 26, 2025

Language: 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, Journal Year: 2025, Volume and Issue: 72, P. 107492 - 107492

Published: March 20, 2025

Language: Английский

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

Environmental Pollution, Journal Year: 2025, Volume and Issue: unknown, P. 126213 - 126213

Published: April 1, 2025

Language: Английский

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

Water Research, Journal Year: 2024, Volume and Issue: 269, P. 122835 - 122835

Published: Nov. 23, 2024

Language: Английский

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

Environmental Research, Journal Year: 2024, Volume and Issue: unknown, P. 120080 - 120080

Published: Sept. 1, 2024

Language: 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, Journal Year: 2024, Volume and Issue: 4(4), P. 1579 - 1589

Published: Feb. 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.

Language: 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, Journal Year: 2024, Volume and Issue: 473, P. 143536 - 143536

Published: Aug. 31, 2024

Language: Английский

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