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Beach morphodynamics and its relationship with the deposition of plastic particles: A preliminary study in southeastern Brazil
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Researchers found that beach morphodynamic characteristics influence the deposition of plastic particles on beaches in São Paulo, Brazil, with 745 particles recovered — mostly styrofoam — and accumulation patterns correlating with beach profile dynamics.
This study describes the beach profile, characterizes microplastics and correlates their abundance with morphodynamics characteristics on three beaches from the state of São Paulo, Brazil. 745 particles were found in 4 m of sediment, mostly styrofoam. Nearly 90% of the fragments were found in Boracéia, the most dissipative beach, while less than 1% were found in Juréia beach, the most reflective one. The chemical composition of microplastics was identified by near-infrared hyperspectral imaging (HSI-NIR). The correlation between the abundance of particles and the slope plus the extension of the sand strip was high, as well as that found with the waves' height. These preliminary results indicate that there might be an intrinsic relation among the morphodynamical forces, the movement and destination of microplastics in marine environments.
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Researchers mapped the spatial distribution of plastic pellets on Santos Beach in Brazil, collecting nearly 12,000 pellets during a summer sampling campaign in 2020. Pellet abundance varied along the beach longitudinal axis and across tidal zones, with the highest concentrations near the waterline, suggesting active transport by ocean currents.
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Researchers evaluated plastic pellet accumulation across 13 sandy beaches in São Paulo state, Brazil, using transects and vertical sediment profiles to one meter depth, identifying regional accumulation hotspots near ports and factories and finding that coastal dunes accumulated more pellets than backshores, with most concentrated in the top 40 cm.
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Researchers compared microplastic pollution across three sandy beaches in Vietnam with different slopes and management practices. They found that beach shape and local factors like tourism intensity and proximity to pollution sources significantly influenced where and how much microplastic accumulated. The study suggests that tailoring beach management strategies to local conditions could be more effective at reducing microplastic contamination.
Litter assessment on sandy beaches along the Brazilian coast: a large-scale analysis of macrolitter and microplastics
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Researchers conducted a large-scale assessment of macrolitter and microplastic contamination on sandy beaches along the Brazilian coast, characterizing pollution patterns, dominant polymer types, and potential anthropogenic sources across multiple sites.
Morphodepositional Insights into Microplastics and Microfibers in Beach Sediments of the Vesuvian Coast, Southern Italy
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Researchers characterized microplastics and microfibers in beach sediments of the Vesuvian coast in southern Italy, examining how particle shape, surface properties, and coastal morphology influence their spatial distribution. Fibers dominated the samples, and sediment trap zones associated with beach morphology accumulated higher particle densities, demonstrating the role of local hydrodynamics in microplastic deposition patterns.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.