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Bioturbation by Scopimera globosa enhances sediment–water fluxes of microplastics and associated phthalates: exposure pathways and ecological risk
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Bioturbation by Scopimera globosa enhances sediment-water fluxes of microplastics and associated phthalates: Exposure pathways and ecological risk.
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Researchers used laboratory experiments with burrowing crabs to show that bioturbation significantly increases upward transport of microplastics and desorption of phthalate plasticizers from PVC fragments in sediment — while exposed crabs exhibited behavioral changes and disrupted metabolic and oxidative stress markers, suggesting benthic fauna may actively redistribute plastic-associated contaminants rather than passively burying them.
A Review of Microplastics in Aquatic Sediments: Occurrence, Fate, Transport, and Ecological Impact
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Researchers reviewed how microplastics accumulate in aquatic sediments — particularly the ocean floor — finding that sediments act as a long-term sink where plastics alter microbial communities and harm bottom-dwelling organisms, meaning the ecological damage of plastic pollution extends far beyond what is visible at the water surface.
Research Progress on Sources and EcologicalEffects of Microplastics in Sediments
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This review synthesizes research on the sources and ecological effects of microplastics in sediments, tracing transport pathways from terrestrial runoff through freshwater systems to marine sediment sinks and documenting impacts on benthic organisms and ecosystem function. Sediments serve as long-term reservoirs of microplastic pollution, making sediment ecology a critical lens for understanding cumulative environmental burden and food chain exposure risks posed by plastic debris.
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