Thinning alters nitrogen transformation processes in subtropical forest soil: Key roles of physicochemical properties

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 949, P. 175086 - 175086

Published: July 27, 2024

Thinning-a widely used forest management practice-can significantly influence soil nitrogen (N) cycling processes in subtropical forests. However, the effects of different thinning intensities on nitrification, denitrification, and their relationships with properties microbial communities remain poorly understood. Here, we conducted a study China applied three treatments, i.e., no (0 %), intermediate (10-15 heavy (20-25 investigated intensity potential nitrification rate (PNR), denitrification (PDR), communities. Moreover, explored among physicochemical properties, community structure, transformation rates under intensities. Our results showed that increased PNR by 87 % 61 decreased PDR 31 50 compared to control, respectively. Although bacterial structure was markedly influenced thinning, fungal remained stable. Importantly, changes composition diversity had minimal impacts processes, whereas such as pH, organic carbon content, forms, were identified primary drivers. These findings highlight critical role managing regulate transformations soils. Effective should focus precisely adjusting enhance conditions, thereby promoting more efficient improving ecosystem health regions.

Language: Английский

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Non-point source polluted river changes microbial community assembly and improves pollutant transformation ability of constructed wetland

Journal of Cleaner Production, Journal Year: 2025, Volume and Issue: unknown, P. 144760 - 144760

Published: Jan. 1, 2025

Language: Английский

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Microbial community dynamics in shallow-water grass-type lakes: Habitat succession of microbial ecological assembly and coexistence mechanisms

Ecotoxicology and Environmental Safety, Journal Year: 2025, Volume and Issue: 291, P. 117819 - 117819

Published: Feb. 1, 2025

Aggregation and co-occurrence patterns of microbial communities are the key scientific issues in lake ecology. To explore mechanisms ecological assembly community succession this unique habitat, 16 samples were collected from eight sites Wuliangsuhai Lake. Second-generation DNA sequencing was applied to reveal spatial dynamics bacterial structure distribution across two environmental media nutrient-rich shallow grassland elucidate characteristics network. This study also examined effects filtering biological interactions on formation maintenance composition diversity. The results highlight habitat heterogeneity composition, with no discernible latitudinal diversity patterns. causal analysis identified electrical conductivity, pH, total nitrogen, phosphorus as primary factors driving changes water sediment grass-type lakes, TN being driver. CL500-3 a pollution-tolerant species aquatic environments. g__norank_f_Verrucomicrobiaceae exhibited significant distance decay pattern, higher turnover rate than sediment. Co-occurrence network revealed greater complexity stability communities, three potential keystone species, water. neutral null model indicated that more susceptible dispersal limitation, whereas complex increased role deterministic processes construction. proposed division plant regions freshwater lakes demonstrated different types, contributing comprehensive understanding shallow-water structure.

Language: Английский

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Similar but different assembly processes of bacterial and micro-eukaryotic communities in an urban river

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: Feb. 26, 2025

Bacteria and micro-eukaryotes play important roles in river ecological systems. The processes that govern bacterial micro-eukaryotic communities urban rivers are still uncertain. spatiotemporal characteristics assembly of the Xiangjianghe River were explored using 16 S 18 rRNA gene amplicon sequencing present study. results indicate community composition exhibited distinct temporal spatial variation. topological co-occurrence networks demonstrate coexistence patterns vary significantly between four seasons. Water temperature (WT) oxidation-reduction potential (ORP) detected as most critical factors affecting structure. stochastic process (dispersal limitation) was dominant for bacteria all Deterministic influenced differently. Compared to bacteria, values niche breadth relatively lower, proportion deterministic higher micro-eukaryotes. These expand our understanding patterns, mechanisms, influencing rivers.

Language: Английский

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Distinct co-succession of dissolved organic matter and bacterial generalists and specialists in inflow rivers of Baiyangdian Lake

Environmental Research, Journal Year: 2025, Volume and Issue: unknown, P. 121378 - 121378

Published: March 1, 2025

Language: Английский

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Spatiotemporal distribution, assembly processes, and key drivers of bacterial communities in a multi-terrain river basin of northern China

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: 13(3), P. 116756 - 116756

Published: April 23, 2025

Language: Английский

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Application of metallic minerals in wastewater treatment: A review

Journal of Water Process Engineering, Journal Year: 2024, Volume and Issue: 68, P. 106385 - 106385

Published: Oct. 31, 2024

Language: Английский

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Distribution pattern and assembly mechanism of microbial community to cause biological aging of asphalt materials in forest road domain

Construction and Building Materials, Journal Year: 2024, Volume and Issue: 450, P. 138612 - 138612

Published: Oct. 4, 2024

Language: Английский

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Evaluating the role of recalcitrant dissolved organic matter in bacterial community dynamics in urbanized freshwater ecosystems

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 957, P. 177475 - 177475

Published: Nov. 13, 2024

Language: Английский

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Effects of the catastrophic 2020 Yangtze River seasonal floods on microcystins and environmental conditions in Three Gorges Reservoir Area, China

Frontiers in Microbiology, Journal Year: 2024, Volume and Issue: 15

Published: March 6, 2024

Introduction During July and August 2020, Three Gorges Reservoir Area (TGRA) suffered from catastrophic seasonal floods. Floods changed environmental conditions caused increase in concentration of microcystins (MCs) which is a common potent cyanotoxin. However, the effects variations MCs, cyanobacteria, TGRA after 2020 Yangtze River extreme floods remain largely unclear, relevant studies are lacking literature. Methods A total 12 representative sampling sites were selected to perform measurement water quality objectives MCs area TGRA. The period was October 2021, included flood period. Organic membrane filters used DNA extraction analyses 16S rRNA microbiome sequencing data. Results showed result significant increases mean values microcystin-RR (MCRR), microcystin-YR (MCYR), microcystin-LR (MCLR) some (i.e., turbidity) hinterland compared with that non-flood periods ( p < 0.05). nitrogen (TN), phosphorus (TP), dissolved (TDP), turbidity), MC MCRR, MCYR, MCLR), cyanobacteria abundance Cyanobium_PCC-6307 Planktothrix_NIVA-CYA_15 ) displayed clear tendency increasing summer autumn decreasing winter spring Discussions results suggest lead changes Moreover, temperature leads objectives, may cause eutrophication. In turn, eutrophication concentration. particular, increased further contribute adverse on human health.

Language: Английский

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