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Low level of microplastics in marine sediment from a shallow-water mud volcano (Northern Tyrrhenian Sea)
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Researchers investigated microplastic presence in marine sediments around a shallow-water mud volcano in the Northern Tyrrhenian Sea, a geologically active area with low anthropogenic pressure, finding low microplastic levels and assessing relationships between sediment grain size and particle accumulation.
Microplastic (MP) pollution represents a worldwide problem, with plastic particles being widely dispersed throughout the marine environment. The present study aims at investigating MPs presence in marine sediments on and around a shallow-water mud volcano located offshore Scoglio d'Affrica islet (Northern Tyrrhenian Sea), a geologically active area, characterized by low anthropogenic pressure and far from terrestrial sources of plastic pollution. Grain size analyses on sediment samples were also carried out to evaluate potential relationships between MPs accumulation and sediment texture. The analyzed samples showed on average 33.7 (± 16.9 standard deviation) items/kg of dry sediment, with fibers being the predominant shape of plastics. No significant correlations with sediment texture was found; conversely, a positive trend was observed between MPs abundance and sampling depth. Findings from this work highlight the pervasiveness of plastic pollution problem and show the need for assessing MPs contamination across different geological settings and depth ranges, in order to deepen our knowledge on MPs distribution within marine sediments. Also see: https://micro2024.sciencesconf.org/558888/document
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