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ACCUMULATION OF MICROPLASTICS (<300 µM) IN MANGROVE SEDIMENTS OF BANDA ACEH CITY, INDONESIA
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Researchers measured microplastic accumulation in mangrove sediments in Banda Aceh, Indonesia, finding up to 3,840 particles per kilogram of sediment — with plastic pellets and fibers smaller than 300 micrometers being the most common types — suggesting these coastal ecosystems are acting as significant traps for plastic pollution from nearby land and waterways.
Mangrove sediments serve as sinks for microplastics originating from land, rivers, and the sea.Several studies have examined microplastic contamination in sediments; however, limited research focuses on microplastics smaller than 300 m in mangrove sediments in Banda Aceh, Indonesia.The purpose of this research is to investigate the abundance of microplastics in surface mangrove sediment in Banda Aceh.Sediment samples were taken from December 2023 to February 2024.Sediment samples were dry sieved and underwent a process to remove organic matter using H2O2, followed by density separation using saturated NaCl.A microscope was used to identify the microplastics while applying the rules of Hidalgo-Ruz and a hot needle test.The results revealed that the microplastic abundance was ranged from 1140-3840 particles/kg where the higher microplastic abundance was found in station 1 (Alue Naga Village) in February 2024.Pellets were the most commonly identified microplastics in this study, followed by fibers smaller than 300 m, and black was the most frequently observed color.The data obtained from this study can be used to support plastic waste management in the area.
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Researchers collected sediment samples from mangrove ecosystems in Kupang and Rote, Indonesia and found 849 microplastic particles, with fibers making up the majority. They found that sediment texture is the key factor controlling how much microplastic accumulates — finer sediments trap significantly more plastic particles than coarser ones.
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Researchers sampled water and sediment across mangrove, seagrass, and coral reef ecosystems at an Indonesian beach, finding microplastic contamination in all three habitats with the mangrove ecosystem showing the highest concentrations — up to 467 particles per kilogram of sediment. Fibers, films, and fragments smaller than 1 mm were the most common forms found, highlighting widespread microplastic pollution across multiple coastal ecosystem types.
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This study documented microplastic pollution in tropical mangrove estuaries around Penang, Malaysia, finding thousands of plastic particles in both water and sediment samples. Concentrations were particularly high near the more urbanized Seberang Perai area, where sediment contained up to 4,000 particles per kilogram. The research highlights that tropical mangroves, which serve as important nursery habitats for marine life, are accumulating significant amounts of microplastic pollution.
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