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From rivers to mangroves, microplastics are contaminating the Amazon
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Tiny plastic bits called microplastics are showing up throughout the Amazon, from rivers all the way to mangrove forests, even in this remote wilderness far from big cities and factories. This matters because these plastics can enter the food chain through fish and other wildlife that people eat, and scientists are still working to understand how consuming microplastics affects our health over time.
MANAUS, Brazil — On June 20, a 50-member team led by NGO Asas de Socorro and Rede Reviva walked about 1.5 kilometers (1 mile) along the shoreline of the Puraquequara Lake in eastern Manaus during a garbage-collection effort. When the activity finished covering a stretch of beach on a lake with a water surface estimated at 20-25 km2, […]
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Abundance, Composition, and Distribution of Microplastics in Amazonical on a Non-urbanized Beach
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Researchers found surprising amounts of microplastic pollution (tiny plastic fragments and fibers, mostly from fishing gear and other human trash) on a remote, undeveloped beach in Brazil, showing that even places far from cities aren't safe from plastic contamination. This matters because these plastic particles can be eaten by fish and other seafood, potentially building up in the food chain and eventually reaching our plates.
Large-scale monitoring and risk assessment of microplastics in the Amazon River
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Researchers conducted the largest microplastic monitoring study in the Amazon River, sampling 40 sites across 1,500 kilometers. Microplastics were found everywhere, with urban streams near cities showing concentrations up to 1,000 times higher than the main river. This study confirms that even remote freshwater ecosystems like the Amazon are contaminated with microplastics, which could affect the fish and water that local communities depend on.
Microplastics in the Amazon biome: State of the art and future priorities
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This review examines microplastic pollution in the Amazon region and finds contamination levels comparable to heavily polluted areas worldwide. Poor sanitation is a major source, with fibers being the most common particle type found in water, sediment, and wildlife. Despite the Amazon's global ecological importance, research on microplastics there has been very limited, and the authors call for urgent expansion of scientific monitoring.
First evidence of microplastic ingestion by fishes from the Amazon River estuary
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Researchers documented the first evidence of microplastic ingestion by fish in the Amazon River estuary, finding plastic particles — predominantly polyamide and polyethylene pellets — in 30% of 189 specimens across 14 species, with larger fish containing more particles, indicating widespread contamination extending into one of the world's most biodiverse river systems.
Comprehensive risk assessment of microplastics in tidal channel sediments in amazonian mangroves (northern Brazil)
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Researchers assessed microplastic pollution in mangrove sediments along an estuary in the Brazilian Amazon, finding contamination at all nine sampling sites with an average of 433 particles per kilogram. While the contamination was classified as low-level, the presence of microplastics in this remote Amazonian ecosystem shows the global reach of plastic pollution. Mangroves are critical nursery habitats for fish and shellfish, so contamination here could affect seafood safety for local communities.
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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.