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Presence and seasonal distribution of microplastics in beach sand of Kuşadası-Davutlar-Güzelçamlı coastal region of Aydın province in Türkiye
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Spatial Distribution and Contamination of Microplastics in Surface Sediments: A Case Study from Menekşe Beach, Marmara Sea, Türkiye
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Researchers analyzed microplastic abundance in beach sediments at Menekse Beach on Turkey's Marmara Sea, finding mean concentrations of over 25,000 items/kg—notably higher when detected by fluorescent microscopy than standard stereomicroscopy—with fragments and fine-grained sediments dominating. The high contamination levels linked to wastewater discharge and recreational activities in Istanbul illustrate how densely populated coastal cities act as major microplastic sinks in semi-enclosed seas.
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A survey of 27 beaches along Rio de Janeiro's eastern coast found microplastics on every beach, with winter counts (2,987 particles) nearly five times higher than summer (562 particles), driven by seasonal wind and wave dynamics, with fragments and fibers of polyethylene and polypropylene dominating. The seasonal variation reveals that MP exposure for coastal wildlife and beachgoers fluctuates dramatically with environmental conditions, complicating risk assessments tied to any single sampling window.
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Researchers conducted the first year-long study of microplastic and nanoplastic pollution in coastal sediments on Istanbul's south coast, finding average concentrations of about 1,364 particles per kilogram and an extreme hazard index score, with microorganisms colonizing particle surfaces indicating potential for microplastics to carry pathogens into the marine environment.
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Indian coastal sediment survey finding MP peaks near river mouths during monsoon - 80748 — Spacecraft deployable structure microdynamics (not microplastics-related) - 34291 — AFM study of early-stage polymer wear at nanoscale (MP generation mechanism) - 60453 — New all-glass flotation method for extracting MPs from sediment, 92% recovery - 60446 — Low-cost sediment trap captures ~25% of MPs in flowing water - 60445 — Rural Kansas rivers contain MPs even upstream of urban areas - 60408 — Seabirds transport marine MP fibers to remote atoll soils via guano - 60404 — MPs found in mountain snowpack dust, possibly reducing snowmelt albedo - 60397 — Urban land cover correlates with MP levels in karst groundwater springs - 60376 — Asian clams may biologically indicate seasonal MP variation in freshwater - 60369 — MPs detected inside Mammoth Cave; surface rivers the primary entry vector - 60359 — First evidence of MPs in hailstones, showing atmospheric circulation of plastics - 60284 — Turbulent flow vertical mixing study for MP transport modeling - 60231 — Tire wear optimization method; tire particles are top MP source - 60206 — Rhizobiome microbes may help mitigate plastic pollution in soil - 59687 — Review of microbial plastic degradation capabilities and challenges - 59678 — Review of MP hazards and interactions in soil environments - 59675 — MPs found across cryosphere; ice melt may release stored plastics - 59671 — Review of microbial approaches to degrading macroplastic ocean waste - 59603 — Review of MP detection methods in water samples - 59591 — Particle size and density govern MP vertical mixing in water columns - 59538 — Review calling for standardized MP sampling and analysis protocols - 59513 — Review of micro/nanoplastic pollution in terrestrial ecosystems - 59468 — Review of MPs in water and removal performance of wastewater treatment plants - 59467 — Review of MP generation, spread, and management strategies - 59464 — Transformer neural network for automated, explainable MP detection in images - 59436 — Review of MP ecotoxicology across aquatic food webs - 59429 — Polymer type analysis of coastal MPs and the "missing plastics" question - 59420 — Pollution baseline assessment for North Evoikos Gulf, Aegean Sea - 59308 — Review of MP research gaps and data needs in South Asia
Microplastics Beach Pollution: Composition, Quantification and Distribution on the Southern Coast of Brazil
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Researchers quantified microplastic pollution on a southern Brazilian beach, finding an average of 650 MPs/kg of sediment with highest concentrations near the Mampituba River mouth, dominated by polyethylene, polypropylene, and polyamide particles in the 50–100 µm range. The findings confirm that riverine transport is a major pathway delivering microplastics to coastlines, underscoring the need for upstream source control to protect coastal ecosystems.
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