High concentrations of plastic hidden beneath the surface of the Atlantic Ocean

Katsiaryna Pabortsava () and Richard S. Lampitt
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Katsiaryna Pabortsava: National Oceanography Centre
Richard S. Lampitt: National Oceanography Centre

Nature Communications, 2020, vol. 11, issue 1, 1-11

Abstract: Abstract Concern over plastic pollution of the marine environment is severe. The mass-imbalance between the plastic litter supplied to and observed in the ocean currently suggests a missing sink. However, here we show that the ocean interior conceals high loads of small-sized plastic debris which can balance and even exceed the estimated plastic inputs into the ocean since 1950. The combined mass of just the three most-littered plastics (polyethylene, polypropylene, and polystyrene) of 32–651 µm size-class suspended in the top 200 m of the Atlantic Ocean is 11.6–21.1 Million Tonnes. Considering that plastics of other sizes and polymer types will be found in the deeper ocean and in the sediments, our results indicate that both inputs and stocks of ocean plastics are much higher than determined previously. It is thus critical to assess these terms across all size categories and polymer groups to determine the fate and danger of plastic contamination.

Date: 2020
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DOI: 10.1038/s41467-020-17932-9

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