Journal
MARINE POLLUTION BULLETIN
Volume 165, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2021.112150
Keywords
Plastic debris; Marine litter; Arctic Ocean; North Sea; Baltic Sea
Funding
- Turku University Foundation [5-707]
- Rotary Club Nauvo
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Neuston samples collected from different locations in the Arctic Ocean, Northern Atlantic Ocean, and the Baltic Sea contained low concentrations of microplastics, mainly consisting of polyethylene fragments. Films and fibers were scarce in the samples analyzed.
Neuston samples were collected with a Manta trawl in the rim of the Arctic Ocean, in the Northern Atlantic Ocean and the Baltic Sea at eleven coastal and open-sea locations. All samples contained plastics identified by FTIR microscopy. Altogether, 110 microplastics pieces were classified according to size, shape, and polymer type. The concentrations at the locations were generally low (x(-) = 0.06, SD +/- 0.04 particles m(-3)) as compared to previous observations. The highest concentrations were found towards the Arctic Ocean, while those in the Baltic Sea were generally low. The most abundant polymer type was polyethylene. Detected particle types were mainly fragments. The number of films and fibers was very low. The mean particle size was 2.66 mm (SD +/- 1.55 mm). Clustering analyses revealed that debris compositions in the sea regions had characteristic differences possibly reflecting the dependences between compositions, drifting distances, sinking rates, and local oceanographic conditions.
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