Seasonal changes driving shifts in microbial community assembly and species coexistence in an urban river

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 905, P. 167027 - 167027

Published: Sept. 17, 2023

Language: Английский

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Irreversible community difference between bacterioplankton generalists and specialists in response to lake dredging

Water Research, Journal Year: 2023, Volume and Issue: 243, P. 120344 - 120344

Published: July 13, 2023

Language: Английский

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Distribution patterns and community assembly processes of bacterial communities across different sediment habitats of subsidence lakes

Journal of Environmental Management, Journal Year: 2025, Volume and Issue: 374, P. 124077 - 124077

Published: Jan. 9, 2025

Language: Английский

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Seasonal changes of soil microbiota and its association with environmental factors in coal mining subsidence area

AMB Express, Journal Year: 2023, Volume and Issue: 13(1)

Published: Dec. 20, 2023

Abstract As a special type of wetland, the new wetland in coal mining subsidence area is highly sensitive to environmental changes. In recent years, more and attention has been paid studies soil microbial diversity newly born wetlands areas. However, there are few reports on seasonal variation its relationship with physical chemical properties. this study, 16S rRNA gene sequencing technology was used analyze changes composition functional formed areas, determine nutrient elements properties so as correlation between A total 16,050 OTUs were obtained after sample noise reduction. Proteobacteria , Acidobacteriota Bacteroidota highest abundance Jining. The two seasons gathered separately, temperature (Temp), phosphorus (TP), available (AP), organic carbon (TOC) dry matter content (DMC) key factors for change community contents Temp, AP TP significantly correlated microorganisms summer area, while DMC TOC winter area. Soil seasons. TP, AP,

Language: Английский

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Analysis of bacterial community structure, functional variation, and assembly mechanisms in multi-media habitats of lakes during the frozen period

Ecotoxicology and Environmental Safety, Journal Year: 2024, Volume and Issue: 284, P. 116903 - 116903

Published: Aug. 27, 2024

Ice, water, and sediment represent three interconnected habitats in lake ecosystems, bacteria are crucial for maintaining ecosystem equilibrium elemental cycling across these habitats. However, the differential characteristics driving mechanisms of bacterial community structures ice, sediments seasonally frozen lakes remain unclear. In this study, high-throughput sequencing technology was used to analyze compare structure, function, network characteristics, assembly communities Wuliangsuhai, a typical cold region Inner Mongolia. The results showed that ice water phases had similar diversity composition, with Proteobacteria, Bacteroidota, Actinobacteria, Campilobacterota, Cyanobacteria as dominant phyla. displayed significant differences from Chloroflexi, Firmicutes, Desulfobacterota, Acidobacteriota being Notably, exhibited higher spatial variability their distribution than those sediment. This study also revealed during period, species media were dominated by cooperative relationships. Community primarily influenced stochastic processes, dispersal limitation drift identified two most factors within process. heterogeneous selection played role composition. Furthermore, functions related nitrogen, phosphorus, sulfur, carbon, hydrogen vary among These findings elucidate intrinsic structure changes quality different (ice, sediment) cold-zone freezing offering new insights environmental protection ecological restoration efforts such environments.

Language: Английский

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Sulfate and pH drive microbial assembly and coexistence in hyporheic zone contaminated by acid coal mine drainage

Journal of Hydrology, Journal Year: 2025, Volume and Issue: unknown, P. 132703 - 132703

Published: Jan. 1, 2025

Language: Английский

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Adaptive Development of Soil Bacterial Communities to Ecological Processes Caused by Mining Subsidence

Journal of Basic Microbiology, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 31, 2025

Subsidence from coal mining is a major environmental issue, causing significant damage to soil structure. Soil microorganisms, highly sensitive changes, adapt accordingly. This study focused on four areas of the Burdai mine: non-subsidence area (CK), half-yearly (HY), 1-year (OY), and 2-year (TY) subsidence areas. Using high-throughput sequencing molecular ecological network analysis, we examined microbial community diversity structure across these zones, exploring assembly functional predictions. Results showed that compared control, experienced reduced water content, organic matter, available phosphorus, alkaline nitrogen, with lowest levels observed at 1 year. These values began rise after year, suggesting natural recovery stabilized. Microbial communities were closely related nitrogen. At mark, property changes significantly diversity, which then recover 2 years. The during was simpler, 102 nodes, 179 edges, an average degree 3.51, indicating early unstable, still adapting. By interactions had begun stabilize. Stochastic processes played key role in variability short-term subsidence.

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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Deciphering Planktonic Bacterial Community Assembly in the Storage Reservoir of the Long-Distance Water Diversion Project

Microorganisms, Journal Year: 2025, Volume and Issue: 13(2), P. 465 - 465

Published: Feb. 19, 2025

Storage reservoirs are crucial components of long-distance water diversion projects, where may lead to changes in microbial diversity and community structure. Seasonal variations also drive alterations communities. However, the way that microbes assemble under combined effects seasonal storage reservoir has not been extensively studied. Jihongtan Reservoir is terminal Yellow River Qingdao Water Diversion Project (YQWD), which had an average annual period exceeding 290 days recent years. In this study, 16S rDNA amplicon sequencing was used investigate dynamics assembly planktonic bacterial communities during Reservoir. The results indicate bacteria were able maintain stable across all four seasons, while structure underwent significant succession. temperature (WT) found be primary driving environmental factor influencing dynamic Co-occurrence network patterns varied different particularly spring winter. displayed most complexity, showcasing highest connectivity greater stability. contrast, winter simpler, exhibiting lower local but higher global analysis neutral model null revealed relative importance deterministic stochastic processes governing varies seasonally. Stochastic (dispersal limitation) more prominent spring, summer, autumn, (heterogeneous selection) play a role This study essential for gaining comprehensive understanding projects offers valuable references assessment other similar projects.

Language: Английский

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Sediment bacterial biogeography across reservoirs in the Hanjiang river basin, southern China: the predominant influence of eutrophication-induced carbon enrichment

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

Published: March 28, 2025

A fundamental goal of reservoir ecosystem management is to understand bacterial biogeographic patterns and the mechanisms shaping them at a regional scale. However, little known about how eutrophication, major water quality challenge in reservoirs, influences sediment subtropical regions. In this study, communities were sampled from 21 reservoirs Hanjiang river basin, southern China, spanning trophic states oligotrophic eutrophic. Our findings demonstrated that eutrophication-driven changes total carbon (TC) significantly shaped communities, weakening "distance-decay" relationships typically link community similarity geographical distance. TC content exceeding threshold 13.2 g·kg-1 resulted substantial shifts structure. Specifically, high levels promoted dominance copiotrophic bacteria such as Syntrophales (Deltaproteobacteria), Clostridiaceae (Firmicutes), VadinHA17 (Bacteroidetes), while taxa like Anaerolineaceae (Chloroflexi) Nitrospirota prevalent low sediments. Additionally, higher was associated with increased heterogeneity composition. Reservoirs elevated exhibited more complex interaction networks, characterized by stronger niche segregation competition compared networks. Overall, these underscore pivotal role biogeography They provide valuable insights for predicting responses eutrophication offer guidance mitigating impacts anthropogenic activities on freshwater ecosystems.

Language: Английский

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