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Microplastics on beaches and mangrove sediments along the coast of South China
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Microplastic concentrations in beach and mangrove sediments along the South China coast were higher in summer than winter, with fibres and fragments dominating, and mangrove sediments retaining significantly more particles than adjacent beaches, confirming mangroves as important sinks for coastal microplastic pollution.
Accumulation of microplastics (MPs) data on a global scale is key to supporting plastic waste management for protecting ecosystems. To respond this call, a sampling campaign was conducted in the summer and winter seasons of 2018 to collect beach and mangrove sediment samples from 32 sites along the coastline of South China. The MPs concentrations in the intertidal zone along the coast of South China were comparable to those in other regions around the world. Polystyrene foams and fibers were the most abundant debris in the 0.2-5 mm and 0.02-2 mm MPs, respectively. Principal component and correlation analyses indicated that the abundances of MPs were related to wind direction, wastewater discharge amount, and tourist and fishing activities. Risk assessments suggested that potential ecological risks induced by MPs on beaches and mangrove forest along the coast of South China should not be overlooked.
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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.