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Spatial Heterogeneity of Microplastic Contamination in a Tropical Sandy Beach: Influence of Management Regimes and Recreational Use
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Researchers studying a popular Thailand beach found that tiny plastic bits (mostly fibers, likely from clothing and fishing gear) weren't spread out evenly — some areas had way more than others, even within the same stretch of sand. Interestingly, the strictly protected National Park zone had less contamination than areas managed by local communities or a research station, suggesting that how a beach is managed and used by visitors affects plastic buildup. While this study didn't test health effects directly, it matters because these microplastics can end up in the water and food chain, and understanding where they accumulate helps target cleanup and policy efforts more effectively.
Microplastic contamination is a growing environmental concern in coastal ecosystems, particularly on recreational beaches where human activities may influence plastic inputs. This study investigated microplastic abundance and particle characteristics across five recreational zones along Hatwanakorn Beach in the Gulf of Thailand, focusing on fine-scale variability within a spatially continuous beach system and across management regimes. Supratidal sediments were collected using a quadrat-based approach, and polymer types were identified using Fourier Transform Infrared spectroscopy (FTIR). Fibers were the predominant particle type, followed by fragments, and most particles were classified as large microplastics (1–5 mm). Significant spatial differences in abundance were observed among recreational zones (Kruskal–Wallis test, χ2 = 13.37, p = 0.0096). At the management regime scale, a negative binomial generalized linear model also indicated significant differences (χ2 = 30.58, p < 0.001), with higher abundance in the Hatwanakorn Forestry Research and Student Training Station (HWK Station) and Community regimes than in the National Park regime. These results indicate that microplastic distribution can be spatially heterogeneous even within a continuous recreational beach system, underscoring the importance of accounting for fine-scale spatial variability when assessing microplastic contamination in coastal environments.
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Microplastic pollution in Vietnamese sandy beaches: Exploring the role of beach morphodynamics and local management
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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.
Microplastics in tropical coastal and river sediments in a non-industrial urban area: Correlations with land use and potential sources
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Researchers studying rivers and coastlines in Aceh, Indonesia found that microplastic pollution wasn't just about nearby factories—it was tied to how crowded an area was and how well waste was managed. Surprisingly, tourist beaches had less microplastic contamination than non-tourist areas, likely because they're cleaned more carefully. Since microplastics can enter the food chain (including seafood we eat) and their health effects are still being studied, understanding where they come from—even in places without heavy industry—helps communities target cleanup and waste management efforts where they're needed most.
Linking the Tourism Activity to the Occurrence and Distribution of Microplastics
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Researchers assessed microplastic abundance, type, and spatial distribution in coastal water, sediments, and fish across three zones of Gili Trawangan, Indonesia, finding that tourism-related activities concentrated microplastics at recreational beaches with concentrations reaching 19.25 particles/L.
Contamination and characteristics of microplastics in recreation beach sediment of the western part of the inner Gulf of Thailand
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Researchers assessed microplastic contamination in beach sediments at a recreation site, finding plastic particles of varying shapes and colors that reflect inadequate waste management and runoff from multiple pollution sources.
Occurrence of microplastics on beach sediment at Libong, a pristine island in Andaman Sea, Thailand
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Researchers surveyed microplastic contamination in beach and mudflat sediments at Libong Island, a relatively pristine site in Thailand's Andaman Sea. Despite the island's protected status, microplastics were found throughout, with fibers making up 59% of detected particles, showing that plastic pollution reaches even remote coastal ecosystems.
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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.