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61,005 resultsShowing papers similar to Bacterial Community Structure and Its Influencing Factors in Surface Sediments of the Nyang River in the Dry Season, China
ClearAnthropogenic land uses shape denitrification-related microbial communities in freshwater river ecosystems
Researchers investigated how anthropogenic land uses (agricultural and urbanized) versus natural land uses shape denitrification-related microbial communities in the Weihe and Hanjiang Rivers in China's Qinling Mountains using deep 16S rRNA gene sequencing of water and sediment samples. Results revealed that land-use type significantly alters the composition and function of nitrogen-cycling microbial communities in freshwater river ecosystems.
Evaluation of the Influence of Habitat Heterogeneity and Human Activities on the Distribution of Microbial Diversity in a High Elevation Drop River
This is a freshwater microbiology study characterizing bacterial diversity in the Huotong River across different land-use zones in China; it is not a microplastics research paper.
Microplastic-associated bacterial assemblages in the intertidal zone of the Yangtze Estuary
Researchers used high-throughput DNA sequencing to profile bacterial communities colonizing microplastics in the intertidal zone of China's Yangtze Estuary, finding that plastisphere community composition reflected the particles' sedimentary versus aquatic origins and included keystone taxa adapted to surface-colonization as well as potential pathogens hitchhiking on plastic surfaces.
Potential risk of microplastics in plateau karst lakes: Insights from metagenomic analysis
Researchers surveyed microplastic pollution in remote alpine lakes on the edge of the Tibetan Plateau, finding concentrations of 20 to 59 particles per liter in water and up to 997 particles per kilogram in sediments. Using metagenomic analysis, they discovered that microplastic surfaces harbored distinct microbial communities carrying antibiotic resistance and virulence genes. The study suggests that even pristine high-altitude ecosystems are affected by microplastic contamination with potential ecological risks.
[Characterization of Microplastic Surface Bacterial Community Structure and Prediction of Ecological Risk in Poyang Lake, China].
Researchers characterized bacterial communities on microplastic surfaces (PE, PET, PP, PS) in Poyang Lake using 16S high-throughput sequencing, finding that microplastic surfaces harbored distinct communities with lower diversity than surrounding water and sediment, dominated by Proteobacteria and Bacteroidota with Massilia and Pseudomonas as key genera.
Contrasting the diversity patterns and processes of microbial community assembly in water and sediment in Lake Wuchang, China
This study investigated how bacterial communities are distributed between water and sediment in Lake Wuchang, China, finding that different ecological processes drive community assembly in each habitat. Understanding these microbial patterns helps clarify ecosystem function in freshwater lakes.
Microplastics pollution alters bacterial community in hyporheic sediments: A case study from the Beiluo River Basin
Researchers surveyed microplastics in hyporheic zone sediments (the biologically active layer beneath riverbeds) of China's Beiluo River and found that PET fragments smaller than 30 µm dominated, with polymer type and particle size driving distinct shifts in bacterial community composition and suppressing overall microbial diversity.
Spatiotemporal changes of bacterial communities during a cyanobacterial bloom in a subtropical water source reservoir ecosystem in China
Researchers used DNA sequencing to track how bacterial communities in a Chinese reservoir changed during different phases of a cyanobacterial (harmful algae) bloom, finding that bacterial diversity dropped significantly during the bloom outbreak and that the composition of communities shifted in distinct ways tied to nutrient levels and temperature. Understanding these microbial dynamics could help water managers predict and control harmful algal blooms that threaten drinking water quality.
Uniqueness and Dependence of Bacterial Communities on Microplastics: Comparison with Water, Sediment, and Soil
Researchers compared bacterial communities on microplastics with those in water, sediment, and soil in the Three Gorges Reservoir area, finding that microplastic-associated communities are unique in composition and ecological function compared to surrounding environments.
Cascade dams altered taxonomic and functional composition of bacterioplankton community at the regional scale
Researchers used 16S rRNA gene sequencing to investigate how cascade dams alter bacterioplankton community taxonomy and function at the regional scale in the Shaying River Basin, finding that dam-influenced zones created distinct environments with different community structures and interaction strengths compared to natural river sections.
Novel bacterial lineages assembled from wastewater-impacted river metagenomes unveil ecosystem functions and risk of antibiotic resistance spread in the community
Researchers assembled novel bacterial lineages from metagenomes of wastewater-impacted river sediments, identifying previously undescribed microbial taxa with metabolic capabilities for plastic degradation and emerging contaminant breakdown.
Bacterial signatures of anthropogenic pressures in a high-mountain river: a One Health study using full-length 16S profiling
Scientists studied bacteria in a Colombian mountain river and found that human activities like sewage discharge and industrial cooling dramatically changed the types of bacteria living in the water. Areas with more pollution had more harmful bacteria, including some linked to disease and antibiotic resistance. This research helps us understand how pollution affects water quality and could help communities better monitor and protect their water sources from health risks.
Microbial source tracking identifies sources of contamination for a river flowing into the Yellow Sea
Researchers used high-throughput sequencing for microbial source tracking to identify contamination sources in a river flowing into the Yellow Sea, providing a more effective method than traditional approaches for managing river water quality.
[Distribution Characteristics of Microplastic Surface Bacterial Communities Under Flooded and Non-flooded Conditions in Nanjishan Wetland of Poyang Lake].
A 16S sequencing study of bacterial communities in the Poyang Lake wetland found that microbial diversity on microplastic surfaces was lower than in surrounding sediment and water, with the microplastic biofilm community shifting between sediment-like (non-flooded) and water-like (flooded) profiles depending on water level. The plastisphere communities were dominated by distinct bacterial genera including elevated Proteobacteria, suggesting that microplastics select for specific microbial assemblages in natural wetland ecosystems.
Identifying Microbial Distribution Drivers of Archaeal Community in Sediments from a Black-Odorous Urban River—A Case Study of the Zhang River Basin
This study investigated how urbanization, eutrophication, and heavy metal pollution shape archaeal (ancient microbial) community composition in sediments of blackened, odorous urban rivers. Understanding microbial responses to these stressors helps track the health of aquatic ecosystems heavily impacted by pollution, including microplastics.
Impact of microplastics on microbial community in sediments of the Huangjinxia Reservoir—water source of a water diversion project in western China
Researchers examined microplastic contamination and its effects on microbial communities in sediments of the Huangjinxia Reservoir in western China, investigating how microplastic presence alters the composition and function of microbial assemblages in this drinking water source.
Distinct profile of bacterial community and antibiotic resistance genes on microplastics in Ganjiang River at the watershed level
Researchers investigated microplastic pollution and associated bacterial communities, human pathogenic bacteria, and antibiotic resistance genes across the Ganjiang River watershed. They found microplastics were widely distributed with an average of 407 particles per cubic meter, and that microplastic surfaces harbored significantly higher bacterial diversity and more antibiotic resistance genes than surrounding water or sediment.
The Extent and Pattern of Mariculture Impacts on Spatial and Seasonal Variations of Sediment Bacterial Communities Among Three Coastal Waters
Researchers used high-throughput sequencing to examine spatial and seasonal variations in sediment bacterial communities across three Chinese coastal bays with large-scale suspended mariculture, finding that spatial variation was a stronger driver of community composition than seasonality, with Proteobacteria, Bacteroidetes, and Planctomycetes dominating across all sites and mariculture-associated organic loading shaping local community structure.
Impact of microplastics on microbial community structure in the Qiantang river: A potential source of N2O emissions
Researchers examined how microplastics affect microbial community structure in the Qiantang River, finding that plastic contamination selects for specific bacterial taxa and alters the functional composition of river microbial communities.
Bacterioplankton Community Structure and Its Relationship with Environmental Factors in the Coastal Waters Around the Changli Gold Coast National Nature Reserve in Northern China
Researchers investigated bacterioplankton community structure in coastal waters around a Chinese nature reserve, finding significant seasonal variability in nutrients and identifying key environmental drivers—including nitrogen, phosphorus, and carbon—of bacterial community composition.
Spatial and Temporal Distribution of Bacterioplankton Molecular Ecological Networks in the Yuan River under Different Human Activity Intensity
Bacterioplankton co-occurrence networks in the Yuan River varied spatially and temporally with human activity intensity, with sites under heavy anthropogenic pressure showing simpler, less connected networks and reduced microbial diversity, suggesting that human disturbances destabilize aquatic microbial community interactions.
Bacterial community structure of water, sediment and microplastics in Poyang Lake wetland.
This study compared the bacterial communities living on four types of microplastics (film, foam, fiber, and fragment) in Poyang Lake wetland in China against the bacterial communities in the surrounding water and sediment. The microplastic surfaces hosted distinct microbial communities that differed from both the water and sediment, with foam microplastics supporting the least diverse communities. This "plastisphere" research is important because the unique bacteria colonizing plastic surfaces could spread pathogens or alter nutrient cycles in freshwater wetland ecosystems.
From the Mountain to the Valley: Drivers of Groundwater Prokaryotic Communities along an Alpine River Corridor
Researchers sampled river water and groundwater from 59 sites along a 300 km transect of the Mur River valley in Austria and Slovenia, finding that dispersal limitation drives microbial community assembly at high altitudes while homogeneous selection dominates in lowland aquifers, with land use being a key determinant of groundwater microbiome composition throughout.
Evidence of selective enrichment of bacterial assemblages and antibiotic resistant genes by microplastics in urban rivers
Researchers sampled microplastics from two urban rivers in China and found that the bacterial communities colonizing plastic particles were distinctly different from those in the surrounding water. The microplastic-associated bacteria had lower diversity but higher proportions of biofilm-forming species and functions linked to human disease. Notably, the study found that microplastics selectively enriched antibiotic resistance genes, raising concerns about plastics serving as reservoirs for drug-resistant bacteria.