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61,005 resultsShowing papers similar to Bacterial signatures of anthropogenic pressures in a high-mountain river: a One Health study using full-length 16S profiling
ClearBacterial Community Structure and Its Influencing Factors in Surface Sediments of the Nyang River in the Dry Season, China
Researchers analyzed bacterial community diversity in surface sediments of the Nyang River in Tibet using high-throughput sequencing, finding that climate warming and human activities along this plateau river have measurably shaped microbial composition and structure.
Impact of Antibiotic Pollution on the Bacterial Population within Surface Water with Special Focus on Mountain Rivers
This review examines antibiotic pollution in surface waters, with a particular focus on mountain rivers and pristine environments. Researchers found that even remote mountain areas are affected by antibiotic contamination, largely driven by intensive tourism and associated wastewater. The study highlights that sub-inhibitory concentrations of antibiotics in water can shift bacterial community composition and promote antibiotic resistance, underscoring the need for advanced wastewater treatment technologies.
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.
Holistic assessment of chemical and biological pollutants in a Mediterranean wastewater effluent-dominated stream: Interactions and ecological impacts
Researchers conducted a comprehensive assessment of pollution downstream from a wastewater treatment plant discharge into a Mediterranean river in Spain. They found elevated levels of pharmaceuticals, metals, microplastics, PFAS chemicals, and antibiotic resistance genes below the discharge point, though some recovery occurred within about 500 meters downstream. The study demonstrates that even treated wastewater significantly alters river water quality and microbial communities, highlighting the need for improved treatment technologies.
Urbanization promotes specific bacteria in freshwater microbiomes including potential pathogens
Researchers used full-length 16S rRNA sequencing to compare freshwater microbial communities across urban and rural lakes in Germany, finding that urbanization consistently promoted specific bacterial genera including potential pathogens such as Escherichia/Shigella and Rickettsia, driven by warming, eutrophication, and wastewater inputs.
Impact of sulfamethoxazole on a riverine microbiome
Scientists studied how the antibiotic sulfamethoxazole affects the microbial community in a river, finding that even low concentrations shifted the balance of bacteria and promoted antibiotic resistance genes. This is relevant to the microplastic field because both antibiotics and microplastics promote antibiotic resistance when they co-occur in aquatic environments.
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.
Size effects of microplastics on antibiotic resistome and core microbiome in an urban river
Scientists found that microplastics in an urban river serve as platforms for antibiotic-resistant bacteria and dangerous pathogens including Pseudomonas aeruginosa, Mycobacterium tuberculosis, and Legionella pneumophila. Larger microplastic particles harbored more antibiotic resistance genes, and the concentrations of these genes were much higher on plastic surfaces than in the surrounding water. This research raises concerns that microplastics in waterways could spread drug-resistant infections by providing a surface where dangerous bacteria thrive and share resistance genes.
Anthropogenic 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.
Impact of Urbanization on Antibiotic Resistome in Different Microplastics: Evidence from a Large-Scale Whole River Analysis
Researchers conducted a large-scale river survey across urbanization gradients and characterized antibiotic resistance genes on microplastics from each zone, finding that urbanization level strongly predicted the diversity and abundance of resistance genes on plastic surfaces.
Evaluating the role of microplastics and wastewater in shaping Vibrio spp. and antibiotic resistance gene abundance in urban freshwaters
Researchers sampled water and microplastic biofilms from urban South African rivers and found that microplastics disproportionately enriched Vibrio spp. and tetracycline resistance genes relative to the surrounding water, suggesting microplastics selectively concentrate pathogens and antibiotic resistance genes.
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.
Seasonality impels the antibiotic resistance in Kelani River of the emerging economy of Sri Lanka
A study of the Kelani River in Sri Lanka found that antibiotic-resistant bacteria were more prevalent during dry seasons, when lower water flow concentrates pollutants. Microplastics in rivers can carry antibiotic resistance genes and resistant bacteria, worsening the public health threat from contaminated water.
Marine bacterial resistomes integrate ecological adaptation with anthropogenic amplification: genome-resolved insight along a gradient of human impact
Scientists studied bacteria in ocean waters from areas with different levels of human pollution and found that heavily polluted seas (like the Baltic Sea) contain much more antibiotic-resistant bacteria than cleaner waters. While most of these ocean bacteria are very different from the germs that cause human infections, the research shows that human activities are creating more antibiotic resistance in marine environments. This matters because it suggests our pollution is contributing to the global problem of antibiotic resistance, which makes infections harder to treat.
Correlation appraisal of antibiotic resistance with fecal, metal and microplastic contamination in a tropical Indian river, lakes and sewage
Researchers sampled water from Indian urban rivers, lakes, and sewage plants and found that antibiotic-resistant bacteria correlated with fecal contamination and microplastic presence, especially for certain antibiotics, while fluoroquinolone resistance appeared more linked to seasonal temperature. The study suggests microplastics may help spread antibiotic resistance in urban waterways, adding a new dimension to concerns about plastic pollution.
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.
Longitudinal patterns of microplastic concentration and bacterial assemblages in surface and benthic habitats of an urban river
This study measured microplastic concentrations and microbial communities in a river from source to mouth, finding that both plastic levels and unique plastisphere bacterial communities increased downstream of wastewater treatment plant outflows. The results identify wastewater discharge as a key driver of both microplastic loading and microbial community shifts in rivers.
The Sources and Potential Hosts Identification of Antibiotic Resistance Genes in the Yellow River, Revealed by Metagenomic Analysis
Researchers used metagenomic analysis to characterize antibiotic resistance genes in the Yellow River, identifying their sources and potential bacterial hosts, finding that resistance genes against colistin and carbapenems were present and tracing their origins to agricultural, municipal, and industrial inputs along the river.
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.
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.
Linking ecological niches to bacterial community structure and assembly in polluted urban aquatic ecosystems
Researchers examined how ecological niches shape bacterial community structure and assembly in polluted urban water ecosystems. The study found that the specific environmental conditions within different niches play a key role in determining how microbial communities respond to water pollution. These findings have implications for understanding microbial ecology and maintaining aquatic ecosystem health.
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.
Microplastic concentration, distribution and dynamics along one of the largest Mediterranean-climate rivers: A whole watershed approach.
Researchers conducted a comprehensive survey of microplastic pollution across the entire Biobio river watershed in Chile, one of the largest rivers in South America. They found microplastics at all 18 sampling sites, with concentrations linked to urbanization, wastewater discharge, and agricultural activities. The study reveals that both environmental and human factors drive microplastic distribution patterns throughout large river systems.
Effects of Land Use and Pollution Loadings on Ecotoxicological Assays and Bacterial Taxonomical Diversity in Constructed Wetlands
This study examined how different land uses and pollution sources affect freshwater ecosystems in Colombia, using ecotoxicological tests and bacterial community analysis as bioindicators. Pollution from agricultural runoff and urban waste — which can carry microplastics — was linked to measurable ecological damage.