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Macro to Micro: Anthropogenic Litter Accumulation in Urban Restored Floodplains and Their Subsequent Topsoil Microplastic Pollution
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Researchers studied how litter accumulates in urban floodplains and breaks down into microplastics in topsoil, finding that restored natural areas near cities are still vulnerable to plastic contamination. This suggests ecological restoration alone is insufficient without addressing upstream plastic waste at its source.
Plastics are pervasive anthropogenic pollutants found in ecosystems worldwide. ...
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Sourcing, Timing, and Extent of Microplastic Mobilization by Urban Flooding
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Researchers studied how urban flood events mobilize microplastics stored in urban watersheds, finding that storm flooding dramatically increases the transport of accumulated plastic particles into waterways and downstream environments. As climate change intensifies urban flooding frequency, understanding microplastic mobilization dynamics is critical for predicting pollution loading into aquatic ecosystems and designing stormwater management systems that reduce plastic discharge.
Influence of urban land use on the accumulation of microplastics in urban water bodies
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This study found that the way land is used in cities, like how much is covered by roads, buildings, or industry, affects how much microplastic pollution ends up in nearby water bodies. This matters because these tiny plastic particles can travel through waterways into the food we eat and the water we drink, so understanding their sources in cities could help guide better urban planning to reduce our exposure to them.
Microplastics in Terrestrial Ecosystems
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This review assessed microplastic accumulation in terrestrial ecosystems — including agricultural soils, forests, and urban environments — documenting effects on soil structure, earthworm health, plant growth, and microbial diversity driven by decades of dramatic plastic production growth. Because terrestrial environments receive far more microplastic deposition than oceans yet are less studied, the soil contamination documented here directly threatens food production and represents a major underappreciated source of human dietary microplastic exposure through crops and soil-grown produce.
The Scale and Distribution of Microplastic Pollution in the Soils of a UK Urban Woodland
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Sampling across Epping Forest in London found microplastics in every soil sample, with forested areas showing up to 5-fold higher concentrations than adjacent open areas (mean 2,937 vs. 543 particles/kg), suggesting forest canopies act as preferential accumulation zones for atmospheric microplastic deposition. The study reveals that even ancient woodlands in urban areas are heavily contaminated, with fibrous PET particles accumulating at concentrations comparable to agricultural soils, raising concerns for soil ecosystems and groundwater.
Microplastic Pollution in Terrestrial Systems: Sources and Implications for Soil Functioning and Plant Performance
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Researchers reviewed how microplastics enter terrestrial ecosystems through atmospheric deposition, irrigation, and agricultural mulching and found they reduce soil moisture, disrupt microbial communities, impair nutrient cycling, and harm earthworms — collectively threatening soil health and plant performance in agricultural and natural systems.
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