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61,005 resultsShowing papers similar to Microplastic Contamination of Fine-Grained Sediments and Its Environmental Driving Factors along a Lowland River: Three-Year Monitoring of the Tisza River and Central Europe
ClearHigh spatiotemporal resolution analysis on suspended sediment and microplastic transport of a lowland river
Researchers conducted dense spatial and time-series monitoring of microplastic and suspended sediment transport along Hungary's Tisza River, finding that microplastic concentrations closely tracked sediment levels during floods but diverged during low water. Most detected particles were fibers likely from wastewater, and the data showed that floods, tributaries, and river dams all influence how microplastics move through river systems.
Deposition and Mobilization of Microplastics in a Low-Energy Fluvial Environment from a Geomorphological Perspective
Researchers evaluated how geomorphological factors influence microplastic deposition and mobilization in the fluvial sediments of the Tisza River in Central Europe, comparing surveys conducted in 2019 and 2020. Flood events between surveys redistributed microplastic pollution, reducing sediment concentrations by 30% in the main river and 48% in tributaries while increasing contamination in the Middle Tisza section.
Spatial distribution of microplastics in the fluvial sediments of a transboundary river – A case study of the Tisza River in Central Europe
This case study mapped microplastic distribution in the fluvial sediments of the transboundary Tisza River in Central Europe, finding that microplastic abundance varied with land use, human population density, and hydrological conditions across national borders.
Abundance, Distribution and Drivers of Microplastic Contaminant in Urban River Environments
Researchers surveyed microplastic distribution in urban river environments and identified key drivers of accumulation hotspots, finding that land use, hydrology, and infrastructure factors concentrated microplastics at predictable locations that could inform targeted management interventions.
Microplastic distribution and their abundance along rivers are determined by land uses and sediment granulometry
Researchers studied two river watersheds and found that microplastics were widespread in both water and sediment, with concentrations in water rising alongside increased urban land use. Interestingly, microplastics trapped in sediment were more influenced by the grain size of the riverbed than by human activity. The findings suggest that both human factors and natural river characteristics work together to shape where microplastics end up in freshwater systems.
Modelling the Fate of Microplastics in river bed sediments.
Researchers modeled microplastic transport, deposition, and burial in river bed sediments under varying hydrological conditions. River bed sediments were found to act as long-term reservoirs for microplastics, with periodic high-flow events temporarily resuspending and redistributing particles.
Microplastic clouds in rivers: spatiotemporal dynamics of microplastic pollution in a fluvial system
Researchers tracked microplastic concentrations along 750 kilometers of the Tisza River over three years, finding that floods flush stored sediments — and the microplastics trapped in them — downstream in distinct "clouds" of pollution. Average microplastic concentrations more than doubled from 2021 to 2023, underscoring that flood events dramatically accelerate microplastic transport in river systems.
Effects of seasonal variation and resuspension on microplastics in river sediments
Researchers measured microplastic concentrations in river sediments across multiple seasons and examined the role of resuspension events, finding that MP levels varied significantly by season and that high-flow events released previously deposited particles, redistributing contamination downstream.
Storm Response of Fluvial Sedimentary Microplastics
Researchers investigated how storm events affect microplastic concentrations in river sediments, finding that flood conditions remobilize stored particles and significantly increase microplastic loads in fluvial systems. The study identified key physical controls on microplastic storage and transport in river channels.
Study of the influence of fluvial dynamics on the distribution and transport of microplastics.
Researchers studied how fluvial dynamics, including water flow, turbulence, and river morphology, influence microplastic distribution and transport in a river system. The study found that hydrological conditions strongly control where microplastics deposit and how they move through the watershed.
Abundance, Distribution, and Drivers of Microplastic Contamination in Urban River Environments
Researchers surveyed microplastic contamination in sediments from the River Tame and its tributaries flowing through Birmingham, UK, finding microplastics in every sample at an average of 165 particles per 100 grams. The study identified urban density, wastewater treatment plant proximity, and river hydrodynamics as key drivers of microplastic accumulation hotspots in urban rivers.
Microplastic distribution in a meandering river bed and its sedimentary predictors
Researchers investigated microplastic distribution patterns within a meandering riverbed and identified sedimentary predictors of microplastic accumulation, advancing understanding of within-channel spatial variability that affects large-scale pollution quantification. The study found that specific geomorphological features of meandering channels are strong predictors of local microplastic hotspots in riverbed sediments.
Insights into suspended sediment and microplastic budget of a lowland river: integrating in-situ measurements, Sentinel-2 imagery, and machine learning
Researchers combined river measurements, satellite imagery, and machine learning to track how much microplastic the Tisza River in Hungary carries downstream each day. They found that flood events spike microplastic transport five-fold, meaning a small number of high-water days drive the majority of plastic particles reaching the sea.
Sinks and sources: Assessing microplastic abundance in river sediment and deposit feeders in an Austral temperate urban river system
Researchers investigated microplastic abundance in river sediments and depositional zones, finding that sediment acts as both a sink and a temporary source, with stored microplastics re-mobilized during high-flow events.
Modelling the Fate of Microplastics in river bed sediments.
Researchers modeled the fate of microplastics deposited in river bed sediments, examining how hydrological conditions influence their distribution, burial, and potential for downstream transport. The models revealed that river bed sediments act as significant long-term reservoirs for microplastic pollution.
Mud and organic content are strongly correlated with microplastic contamination in a meandering riverbed
Researchers found that microplastic concentration in river sediments is strongly correlated with mud and organic content, with riverbank areas showing concentrations about ten times higher than the main channel. The study suggests that sediment composition and river flow dynamics play a key role in where microplastics accumulate within riverbeds.
Dynamics of microplastics in urban rivers under varying hydrological regimes
Monitoring of urban rivers showed that microplastic concentrations fluctuate significantly with varying hydrological conditions such as storm events and seasonal flow changes. Understanding these dynamics is essential for accurately characterizing the river microplastic load and its variability over time.
Microplastics in the sediments of small-scale Japanese rivers: Abundance and distribution, characterization, sources-to-sink, and ecological risks
Researchers characterized microplastic pollution in sediments of four small-scale Japanese rivers, finding widespread contamination and identifying polymer types and potential sources, highlighting that even small river systems serve as microplastic transport pathways.
Microplastics in sediments from urban and suburban rivers: Influence of sediment properties
Researchers measured microplastic concentrations in sediments from 12 sites across three Vietnamese rivers in the Red River Delta during dry and rainy seasons, finding concentrations ranging from 1,600 to 94,300 items per kg dry weight. Fiber-dominated microplastic contamination was strongly influenced by sediment properties including grain size and organic carbon content.
Transport of (Micro)plastic Within a River Cross-Section—Spatio-Temporal Variations and Loads
This study measured the transport of micro- and macroplastics across a river cross-section over time, revealing how spatial position in the river, flow conditions, and seasonal variation influence plastic distribution. The findings inform more accurate monitoring protocols for river plastic load assessment.
Making waves: Unraveling microplastic deposition in rivers through the lens of sedimentary processes
Researchers examined how sedimentary processes in rivers control where microplastics are deposited and how long they remain buried. They reviewed existing work on water-sediment exchange of microplastic particles and identified key gaps in understanding deposition dynamics. The study highlights that rivers serve as major pathways for transporting microplastics from land to oceans, and that sediment processes play a critical role in determining their fate.
Exploring the influence of sediment motion on microplastic deposition in streambeds
This study systematically explored how sediment motion affects microplastic deposition in streambeds made of fine sediments, finding that sediment transport dynamics play a critical role in controlling where microplastics accumulate. The results improve understanding of microplastic fate in riverine systems.
Study of the influence of fluvial dynamics on the distribution and transport of microplastics.
Researchers studied how fluvial dynamics including flow velocity, turbulence, and river geomorphology influence the distribution and transport of microplastics in river systems. River hydrodynamics were found to be major determinants of where microplastics accumulate and how far they travel, with implications for predicting contamination patterns in river catchments.
Longitudinal and Vertical Transport of Microplastic Within Sediment in Rivers and Transitional Water Environments
Researchers investigated the longitudinal and vertical transport of microplastics within sediments in rivers and transitional water environments, developing models to quantify how sediment presence affects microplastic mobility and their transport toward coastal areas.