An overview of the sources, impacts, and management techniques of microplastics in the marine environment

The fate and impacts of microplastics in marine systems

Plastics and Microplastics: Impacts in the Marine Environment

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Plastics and microplastics have achieved near-universal distribution in marine environments from surface waters to deep-sea sediments, persisting for decades while fragmenting into increasingly smaller and more biologically available particles. The growing concentration of microplastics in oceans represents a long-term threat to marine biodiversity and the food safety of seafood consumed globally.

Microplastics in the Marine Environment: Sources, Distribution, Biological Effects and Socio-Economic Impacts

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Researchers reviewed the sources, distribution, biological effects, and socioeconomic impacts of microplastic pollution in marine environments, finding that rivers and estuaries are the primary land-to-ocean transport pathways. The review emphasizes that microplastics transfer adsorbed pollutants and additives through food webs to top predators, and that reducing plastic production and improving waste management are essential long-term solutions.

Research Progress of the Sources, Distribution Characteristics, and Potential Risks of Microplastics in the Global Marine Environment

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Researchers reviewed 43 studies across 13 Asian countries and found suspended airborne microplastics ranging from 0.017 to 18,880 particles/m³ outdoors and up to 8,865 particles/m³ indoors, predominantly as fibers and fragments of polyethylene, polypropylene, and PET. The pervasiveness of airborne MPs across Asia—from megacities to ocean environments—demonstrates that inhalation is a significant and underappreciated human exposure route for these persistent pollutants.

Review on Microplastic Pollution in Marine Ecosystems: Sources, Distribution, Ecological Impacts, and Future Directions

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Researchers synthesize current knowledge on microplastic pollution in marine ecosystems, documenting sources ranging from plastic waste breakdown to industrial activities, widespread distribution from ocean surface to seafloor, ingestion by marine organisms across trophic levels, and significant knowledge gaps including long-term ecological consequences and nanoplastic effects requiring standardized research methodologies.