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Floating microplastic pollution in the vicinity of a marine protected area and semi-enclosed bay of Peru
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Researchers conducted a baseline survey of floating microplastics near a marine protected area and semi-enclosed bay in northern Peru. They found an average concentration of 0.22 microplastic particles per liter, predominantly blue polyethylene terephthalate fibers. The study suggests that local surface currents within the semi-enclosed Sechura Bay may trap and accumulate floating microplastics regardless of the sampling season.
A baseline survey for floating microplastics (MPs) in the vicinity of a marine protected area and semi-enclosed bay of northern Peru was carried out. An average concentration of 0.22 MPs/L was estimated, primarily dominated by blue polyethylene terephthalate fibers. The distribution of floating MPs suggests that they tend to accumulate within the semi-enclosed Sechura Bay regardless of the sampling season. This behavior may be explained by local surface currents in the bay, which flow inwards and exhibit vorticities that could entrap MPs. Future studies are suggested to investigate the trajectory and fate of floating MPs within semi-enclosed areas. On the other hand, the impact of floating MPs on the trophic chain of coastal marine protected areas requires further research.
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Pollution by microplastic in highly crowded sandy beaches in Lima, Peru
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Researchers surveyed microplastic contamination at three heavily visited sandy beaches in Lima, Peru, finding fragments and fibers of polypropylene and polyethylene as the most common particles, with abundance varying by season and beach characteristics.
Surface layer microplastic pollution in four bays of the central Mexican Pacific
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Researchers sampled surface microplastics monthly across four bays of the central Mexican Pacific over one year, finding median concentrations between 0.26 and 0.40 particles per square meter with polypropylene and polyethylene as the dominant polymers. Fibers dominated most samples, though Manzanillo Bay showed seasonal dominance of fragments during the rainy season.
First approach to microplastics occurrence in sandy beaches in the province of Islay (Arequipa), southern Peru
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Researchers conducted the first assessment of microplastic occurrence on five sandy beaches in the province of Islay in southern Peru, sampling to 5 cm depth and finding 304 particles total with average densities of 1–4 particles/m2. Beaches adjacent to the Tambo River estuary showed the highest microplastic concentrations, suggesting river transport as a significant delivery pathway to coastal environments.
First evidence of microplastics in the Quilca-Vítor-Chili river basin, Arequipa region, Peru
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This study documented microplastics for the first time in three Peruvian river basins in the Arequipa region, finding an average concentration of 35 particles per cubic meter of water across all sites, with polyethylene and polypropylene being the dominant polymers. Filaments made up over 70% of particles, suggesting textile fibers as a key source. The findings establish a contamination baseline for this region and highlight illegal landfills and agricultural plastic use as primary pollution drivers.
Small plastic debris along the coast of Peru
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Small plastic debris including meso- and microplastics were surveyed along Peru's coastline, finding contamination at all sampled sites with significant variability by season and location. Higher concentrations were found near urban centers and river mouths, reflecting poor solid waste management and land-based inputs. The study provides the most comprehensive baseline data yet for plastic pollution along the Peruvian coast.
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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.