Identifying the spatio-seasonal pattern of hydrochemical evolution and surface water-groundwater interaction in a large urban river basin, Northwest China

The Science of The Total Environment, Год журнала: 2024, Номер 944, С. 173989 - 173989

Опубликована: Июнь 13, 2024

Язык: Английский

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Spatial variability of hydrochemistry in coal-bearing karst areas considering sulfur pollution and underground engineering effects

Environmental Pollution, Год журнала: 2025, Номер unknown, С. 125957 - 125957

Опубликована: Фев. 1, 2025

Язык: Английский

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Differential microbiome features in lake–river systems of Taihu basin in response to water flow disturbance

Frontiers in Microbiology, Год журнала: 2024, Номер 15

Опубликована: Сен. 30, 2024

Introduction In riverine ecosystems, dynamic interplay between hydrological conditions, such as flow rate, water level, and rainfall, significantly shape the structure function of bacterial microeukaryotic communities, with consequences for biogeochemical cycles ecological stability. Lake Taihu, one China’s largest freshwater lakes, frequently experiences cyanobacterial blooms primarily driven by nutrient over-enrichment changes, posing severe threats to quality, aquatic life, surrounding human populations. This study explored how varying disturbances influence microbial diversity community assembly within interconnected river–lake systems East South Taihu (ET&ST). The Taipu River in ET region accounts nearly one-third Taihu’s outflow, while ST includes Changdougang Xiaomeigang rivers, which act inflow rivers. These two rivers not only channel into but can also cause backflow lake creating distinct subjected different intensities disturbances. Methods Utilizing high-throughput sequencing, we selected 22 sampling sites river-lake conducted seasonally assessments dynamics. We then compared differences diversity, assembly, co-occurrence networks regions under regimes. Results discussion demonstrated that intensity temperature influenced structure, niches, coexistence eukaryotic microbes. region, where were stronger, richness increased, phylogenetic relationships closer, yet variations greater than experienced milder Additionally, migration dispersal rates microbes along impact limitations, higher region. High notably reduced niche width overlap, decreasing complexity stability networks. Moreover, path analysis indicated communities exhibited a stronger response communities. Our findings underscore critical need consider effects disturbance on when developing strategies manage protect particularly efforts control Taihu.

Язык: Английский

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Quantification of microbial community assembly processes during degradation on diverse plastispheres based on physicochemical characters and phylogenetic bin-based null model analysis

The Science of The Total Environment, Год журнала: 2024, Номер 931, С. 172401 - 172401

Опубликована: Апрель 25, 2024

Язык: Английский

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Microbial ecosystems and ecological driving forces in the deepest ocean sediments

Cell, Год журнала: 2025, Номер 188(5), С. 1363 - 1377.e9

Опубликована: Март 1, 2025

Systematic exploration of the hadal zone, Earth's deepest oceanic realm, has historically faced technical limitations. Here, we collected 1,648 sediment samples at 6-11 km in Mariana Trench, Yap and Philippine Basin for Trench Environment Ecology Research (MEER) project. Metagenomic 16S rRNA gene amplicon sequencing generated 92-Tbp MEER dataset, comprising 7,564 species (89.4% unreported), indicating high taxonomic novelty. Unlike reported environments, neutral drift played a minimal role, while homogeneous selection (HoS, 50.5%) dispersal limitation (DL, 43.8%) emerged as dominant ecological drivers. HoS favored streamlined genomes with key functions adaptation, e.g., aromatic compound utilization (oligotrophic adaptation) antioxidation (high-pressure adaptation). Conversely, DL promoted versatile metabolism larger genomes. These findings indicated that environmental factors drive novelty advancing our understanding mechanisms governing microbial ecosystems such an extreme environment.

Язык: Английский

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NMR Data Science

Опубликована: Янв. 1, 2025

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Geographical and Environmental Factors Differentially Shape Planktonic Microbial Community Assembly and Resistomes Composition in Urban Rivers

Global Change Biology, Год журнала: 2025, Номер 31(4)

Опубликована: Апрель 1, 2025

ABSTRACT Global urbanization accelerates pollution challenges in urban rivers, including increased transmission of bacterial antibiotic resistance genes (ARGs), severely threatening the health aquatic ecosystems and human health. Yet, systematic knowledge differences distribution community assembly patterns across rivers at a continental scale is still insufficient. In this study, we conducted extensive sampling nine representative China. We used amplicon shotgun metagenomic sequencing, state‐of‐the‐art bioinformatics, multivariate statistics to investigate mechanisms planktonic microbiomes (i.e., bacterioplankton microeukaryotes), their resistomes, i.e., ARGs metal (MRGs). Geographical environmental factors played pivotal role shaping vs. resistomes studied rivers. Phylogenetic‐bin‐based null model analysis (iCAMP) indicated that microbiomes, dominated by dispersal limitation drift, tend toward spatial heterogeneity. contrast, driven deterministic processes, display more similar patterns. Cross‐validated Mantel tests revealed geographical geographic distance) were primary regulators microbial assembly, while temperature) control processes resistomes. Our findings provide crucial insights into driving biogeographical entities scale, offering valuable implications for mitigating managing spread from environment humans.

Язык: Английский

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Size‐dependent community patterns differ between microbial eukaryotes and bacteria in a permafrost lake–river–sea continuum

Limnology and Oceanography, Год журнала: 2024, Номер 69(3), С. 667 - 680

Опубликована: Янв. 18, 2024

Abstract Microbial communities play a crucial role in ecosystem functioning, with contributions that can vary among taxonomic domains and size fractions. However, microbial assembly processes for bacteria eukaryotes are seldom characterized together using fractionation, especially flowing waters. Here, we used amplicon sequencing combined physicochemical measurements to determine how fractionated (small fraction 0.22–3 μ m; large > 3 m) community structure diversity varied over subarctic river continuum. We sampled the Sheldrake River, 25 km through degrading discontinuous permafrost, from its lacustrine source forest shrub tundra discharge plume eastern Hudson Bay (Nunavik, Canada). differed by habitats, differences variables potentially driving fractions domains. For small fraction, colored dissolved organic matter was significant covariate of variation both eukaryotes, consistent influence landscape gradients. There were contrasting patterns along lake–river transect between bacterial An abundance‐based approach indicated all communities, dominated homogeneous selection, while an incidence‐based method showed dominance heterogeneous selection homogenizing dispersal eukaryotes. Our findings show different components riverine have divergent downstream continuum sea.

Язык: Английский

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Spatial Variability of Hydrochemistry in Coal-Bearing Karst Areas Considering Sulfur Pollution And Underground Engineering Effects

Опубликована: Янв. 1, 2024

Язык: Английский

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