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Spatial and temporal analysis of meso- and microplastic pollution in the Ligurian and Tyrrhenian Seas
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This study measured meso- and microplastic abundances in the Ligurian and Tyrrhenian Seas during 2019 sampling campaigns and compared results to 2018 data, finding significant spatial and temporal variation. Year-to-year variability in microplastic concentrations in the Mediterranean highlights the need for long-term systematic monitoring to track pollution trends.
Areas like the Mediterranean coastlines, which have high population density, represent locations of high pollution risk for surrounding environments. Thus, this study aims to compare data on the abundance, size, and composition of buoyant plastic particles collected during two weeks in 2019 in the Ligurian and Tyrrhenian Seas with data from 2018. The results from 2019 show average meso- and microplastic particle concentrations of 255,865 ± 841,221 particles km-2, or 394.19 ± 760.87 g km-2; values which differ significantly from those reported in 2018. Microplastic particles accounted for 88.7% of the sample; the majority of which had a size range being between 1 and 2.5 mm. These data are an important milestone for long-term monitoring of the highly variable plastic pollution levels within this region; showing overlaps in zones of pollutant accumulation in addition to increased overall concentrations of plastic particles compared to previous data.
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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.