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61,005 resultsShowing papers similar to Impact of microplastics on microbial community in sediments of the Huangjinxia Reservoir—water source of a water diversion project in western China
ClearUniqueness 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.
Comparative analysis of microplastic and microbial communities in varied aquatic environments: Disparities in occurrence, interconnections, and ecological implications
Comparative surveys of microplastics and associated microbial communities across river, reservoir, and bay environments in the Dongjiang watershed found that MP abundance and microbial community composition differed significantly by water type, with MP surfaces hosting distinct microbial assemblages.
Microplastics contamination in groundwater of a drinking-water source area, northern China
Researchers investigated microplastic contamination in shallow groundwater from a major drinking-water source area in northern China. The study found microplastics present in groundwater samples, with their abundance, morphology, and chemical composition varying across the study area and correlating with nearby human activities.
Spatiotemporal distribution of microplastics in surface water, biofilms, and sediments in the world's largest drinking water diversion project
Researchers conducted the first spatiotemporal survey of microplastics in the South-to-North Water Diversion Project canal in China — which supplies drinking water to over 53 million people — finding microplastics present in surface water, biofilms, and sediments throughout the highly regulated system. The study raises concerns about microplastic contamination in engineered drinking water infrastructure.
[Composition and Distribution Characteristics of Microplastics in Danjiangkou Reservoir and Its Tributaries].
Researchers analyzed the types, abundance, and distribution of microplastics in Danjiangkou Reservoir, a first-class drinking water source protection area in China. Finding microplastics in a protected drinking water source underscores the need for improved upstream plastic waste management and water treatment to protect public health.
[Distribution Characteristics and Risk Assessment of Microplastics in Soil in Danjiangkou Reservoir Area of South-to-North Water Diversion Project].
This study characterized microplastic occurrence in four types of agricultural soil in the Danjiangkou Reservoir area of China — a critical water source for the South-to-North Water Diversion Project. Orchard soils had higher microplastic concentrations than paddy or dryland soils, driven by plastic mulch use and irrigation. Microplastic contamination of this major water supply raises concerns about downstream drinking water quality for millions of people.
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.
Vertical distribution characteristics of microplastics and bacterial communities in the sediment columns of Jianhu lake in China
Researchers examined microplastic abundance, morphology, and polymer types alongside bacterial community composition in sediment columns (0-60 cm depth) of Jianhu Lake, China, finding microplastic concentrations of 624-3050 particles/kg with rayon, PET, and SBS as dominant polymers, and revealing correlations between microplastic characteristics and bacterial community structure via co-occurrence network analysis.
Microplastics in surface waters and sediments of the Three Gorges Reservoir, China
Researchers sampled surface waters and sediments of the Three Gorges Reservoir in China and found microplastic contamination throughout, with concentrations influenced by water flow dynamics and proximity to human settlements.
Microplastic distribution in large shallow lake sediments: Variations with offshore distance and implications for microbial communities
Researchers analyzed microplastic distribution in sediments of Taihu Lake at varying distances from shore and examined the effects on microbial communities. They found that microplastic abundance decreased with increasing distance from the shoreline, ranging from 240 to 1,120 items per kilogram. The study suggests that microplastic contamination in lake sediments can significantly alter the composition and diversity of local microbial communities.
Exploring correlations between microplastics, microorganisms, and water quality in an urban drinking water source
This study explored the relationships between microplastics, microorganisms, and water quality in China's Xiangjiang River, a source of urban drinking water. Researchers found that microplastic levels were higher near urban areas and wastewater plant outlets, and that the smallest particles showed the strongest correlations with microbial community changes, suggesting complex interactions between plastic pollution and river ecosystems.
Manuscript prepared for submission to environmental toxicology and pharmacology pollution in drinking water source areas: Microplastics in the Danjiangkou Reservoir, China
Researchers investigated microplastic contamination in surface water and sediments of the Danjiangkou Reservoir, the source area for China's South-to-North Water Diversion Project, finding microplastics in all samples at abundances ranging from 467 to 15,017 particles/m3 in water and 15 to 40 particles/kg in sediment. Fibrous particles smaller than 2 mm dominated, with micro-Raman spectroscopy identifying polypropylene as the primary polymer type.
Effects of microplastics on the structure and function of bacterial communities in sediments of a freshwater lake
Researchers examined how microplastics alter the structure and function of bacterial communities in sediments, finding that plastic exposure shifted community composition and reduced overall diversity compared to plastic-free controls. Functional analysis showed impaired denitrification and organic matter decomposition in microplastic-contaminated sediments, indicating ecosystem-level consequences for nutrient cycling.
Interactive impacts of microplastics and chlorine on biological stability and microbial community formation in stagnant water
Researchers found that microplastics in stagnant drinking water accelerated chlorine decay and promoted microbial regrowth, with microplastic-associated biofilms harboring opportunistic pathogens and shifting microbial community composition toward potentially harmful species.
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.
Characteristics and ecological risks of microplastic pollution in a tropical drinking water source reservoir in Hainan province, China
Microplastic pollution was investigated in surface water and sediment of the Chitian Reservoir, a drinking water source in Hainan province, China. Microplastic abundance averaged 3.05 items per liter in surface water and 0.15 items per gram dry weight in sediment, with ecological risk assessed and potential drinking water contamination implications noted.
Microplastics and their interaction with microorganisms in Bosten Lake sediment
Researchers conducted the first study of microplastic contamination in the sediment of Bosten Lake in China, finding plastics throughout the lake with the highest levels near populated areas. The most common types were PET and polyethylene, primarily in fiber form. Certain bacteria associated with plastic breakdown were more abundant in heavily contaminated areas, but the presence of microplastics in this freshwater system raises concerns about their entry into the food chain.
Effects of Microplastics on Microbial Community in Zhanjiang Mangrove Sediments
Researchers found that microplastics in mangrove sediments from Zhanjiang, China, altered the diversity and composition of microbial communities and may affect nitrogen cycling processes such as nitrification.
Analysis of Microplastics in Water and Biofilm Matrices in Lahor Reservoirs, East Java, Indonesia
Researchers detected microplastics in both water and biofilm samples from Lahor Reservoir in East Java, Indonesia, finding that biofilms accumulate microplastics and may serve as a useful monitoring matrix for assessing plastic contamination in freshwater reservoir ecosystems.
Microplastic pollution and its relationship with the bacterial community in coastal sediments near Guangdong Province, South China
This study systematically characterized microplastic pollution in coastal sediments near Guangdong Province, China, and found that microplastic abundance was linked to changes in the local bacterial community. Higher microplastic levels were associated with shifts in microbial diversity, suggesting plastic pollution can alter the microbial ecology of marine sediments.
Distribution and risk assessment of microplastics in a source water reservoir, Central China
Researchers measured microplastic levels at different water depths in a reservoir in central China used as a drinking water source. They found 2 to 14 particles per liter, with polypropylene and polyethylene being the most common types. Middle and bottom water layers showed higher risk levels due to more toxic polymer types, raising concerns about the safety of source water used for drinking.
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.
Pollution status of microplastics in the freshwater environment of China: a mini review
This review assessed microplastic pollution in China's freshwater environments including rivers, lakes, and reservoirs, finding widespread contamination in surface waters, sediments, and biota with variations linked to population density and industrial activity.
Effects of microplastics on bacterial communities in lake wetland sediments: a comparison between drought and flooded conditions
Researchers established a sediment microcosm system for Poyang Lake wetland and examined the effects of polyethylene and polypropylene microplastics on bacterial community structure, functional genes, and ecological processes over 180 days under both simulated drought and flooded conditions.