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20 resultsShowing papers similar to Effects of microplastics on bacterial communities in lake wetland sediments: a comparison between drought and flooded conditions
Clear[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.
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.
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.
Effects of microplastic particles on carbon source metabolism and bacterial community in freshwater lake sediments
A microcosm experiment tested how four common plastic types affect carbon metabolism and bacterial communities in freshwater lake sediments, finding that microplastics disrupted microbial carbon cycling and altered community composition.
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.
Microplastic residues in wetland ecosystems: Do they truly threaten the plant-microbe-soil system?
Researchers used a controlled pot experiment to assess microplastic effects on wetland plant growth, soil microbial communities, and nutrient cycling, finding that MPs altered soil enzyme activity and shifted bacterial community composition but had variable effects on plant growth depending on plastic type.
Biofilms in plastisphere from freshwater wetlands: Biofilm formation, bacterial community assembly, and biogeochemical cycles
Researchers studied how bacteria form biofilms on microplastic surfaces in freshwater wetlands and found that these plastic-associated communities differ significantly from natural soil bacteria. The microplastic biofilms had lower diversity but higher activity in carbon processing and nitrogen cycling genes. This means microplastics in wetlands can alter natural nutrient cycles, potentially affecting water quality in ecosystems that many communities rely on.
Sediment bacterial and fungal communities exhibit distinct responses to microplastic types and sizes in Taihu lake
Researchers conducted microcosm experiments to study how polystyrene and polyethylene microplastics of different sizes affect sediment bacterial and fungal communities in Taihu Lake over 60 days. They found that microplastics reduced microbial diversity and significantly altered community structures, with particle size being the most influential factor. The study suggests that microplastic pollution in lake sediments may disrupt natural biogeochemical processes by shifting microbial community composition and network complexity.
Investigation of Soil-Dwelling Bacterial Community Changes Induced by Microplastic Ex posure Using Amplicon Sequencing
Researchers analyzed soil bacterial community composition after microplastic contamination, finding that different polymer types caused distinct shifts in microbial diversity and functional groups, with implications for soil nutrient cycling and agricultural productivity.
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.
[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.
Microbial biofilm formation and community structure on low-density polyethylene microparticles in lake water microcosms
Researchers investigated biofilm formation on low-density polyethylene microparticles in lake water microcosms, finding that microplastic surfaces supported distinct and dynamic microbial communities that differed from those in the surrounding water.
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.
Effects of microplastics on nitrogen and phosphorus cycles and microbial communities in sediments
Researchers found that PVC, PLA, and polypropylene microplastics altered nitrogen and phosphorus cycling in freshwater sediments by shifting microbial community composition, with effects varying by polymer type and biodegradability.
Can Microplastic Pollution Change Important Aquatic Bacterial Communities?
Microplastics in coastal sediments can change the composition of important bacterial communities that cycle nutrients and maintain ecosystem health. Microplastic-associated bacteria differ significantly from natural sediment bacteria, with potential consequences for the chemical processes these communities perform.
Discrepancy strategies of sediment abundant and rare microbial communities in response to floating microplastic disturbances: Study using a microcosmic experiment
Using microcosm experiments with fluvial sediment exposed to four plastic types, researchers found that floating microplastics altered sediment microbial diversity and reduced bacteria involved in carbon and nitrogen cycling. Abundant microbial taxa were more sensitive to microplastic disturbance than rare taxa, and microplastics decreased network complexity and increased negative species interactions in microbial communities.
Characterizing Microplastic Pollution and Microbial Community Status in Rice Paddy Soils Across Varied Environmental Settings in Songjiang, Shanghai: An Analysis of Morpho-Chemical Characteristics
Researchers characterized microplastic pollution and associated microbial communities in rice paddy soils, finding widespread microplastic contamination that correlated with shifts in soil bacterial diversity. Plastic-associated microbial communities differed from bulk soil communities, suggesting microplastics create distinct microbial niches in agricultural environments.
Different wetting states in riparian sediment ecosystems: Response to microplastics exposure
This study examined how biodegradable PLA microplastics affect microbial communities in river sediments under different moisture conditions. The microplastics disrupted the natural balance of soil microbes, made microbial networks less stable, and acted as carriers for 87 species of disease-causing organisms. The findings suggest that even biodegradable plastics can alter ecosystems and potentially spread pathogens in waterways.
A functional gene-array analysis of microbial communities settling on microplastics in a peat-draining environment
Researchers exposed polyethylene terephthalate and polylactic acid microplastics in a peat-draining river in Malaysia for six months, using functional gene arrays to characterize the microbial communities colonizing the plastic surfaces compared to surrounding water.
Polyamide microplastic pollution modifies the sediment fungal structures associated with different submerged plant species: an insight from aquatic mesocosm experiment
Researchers compiled DNA sequence datasets for sediment bacteria and fungi associated with four submerged aquatic plant species under varying levels of polyamide microplastic pollution in an aquatic mesocosm experiment, providing raw data to support analysis of how microplastic contamination modifies microbial community structures in aquatic sediments.