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Effect of lithological properties of beach sediments on plastic pollution in Bodrum Peninsula (SW Türkiye)
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Researchers examined how the lithological (rock and mineral) properties of beach sediments influence plastic pollution accumulation in Bodrum, Turkey. The study found that sediment grain size and composition affect where and how much plastic debris concentrates on beaches.
The effects grain size on transport and retention of plastics in sediments are controversial issue. Four beaches were selected on the Bodrum Peninsula (SW Türkiye) for this study. Twenty-four samples with poorly to well sorted, sandy gravel, gravel, or gravelly sand were collected from the top five cm of the sampling quadrant's four corners and center of 1 m area, from shoreline and backshore. The highest plastic content (38 mesoplastics/600 g - 455 microplastics (MPs)/1200 g) was determined on the Bodrum Coast having the highest population. Polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS), polyethylene terephthalate (PET) and polyurethane (PU) were predominantly detected with Fourier Transform Infrared Spectroscopy (FTIR) analysis as MPs as a fragment and fiber. This study indicates the negative correlation between grain size and the number of MPs in coastal sediments. Anthropogenic activities are evaluated as a possible primary source of plastic pollution in the study area.
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A study of nine Black Sea beaches in Turkey found that microplastic abundance varied significantly with beach width, sand grain size, organic content, and tourism pressure, revealing that local physical and human factors shape how microplastics accumulate across the three-dimensional sediment profile. These findings help explain why microplastic hotspots form on particular beaches and can guide targeted cleanup and monitoring efforts.
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Researchers sampled microplastics across a Mediterranean protected beach and found that accumulation is strongly influenced by sediment grain size — fine-grained sands trap more surface microplastics due to lower infiltration capacity — while fiber shape promotes entanglement in sediment pores and proximity to tourism and port activities drives spatial pollution hotspots.
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Researchers measured plastic and microplastic pollution in sediment from three Mediterranean beaches across seasons, finding that smaller microplastics accumulate at the backshore while larger items concentrate near the waterline. Seasonal patterns and beach use intensity affected plastic abundance, with implications for beach management and cleanup strategies.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.