The role of oceanographic processes and sedimentological settings on the deposition of microplastics in marine sediment: Icelandic waters

MARINE POLLUTION BULLETIN

卷:164

Article

Loughlin, Christine^1,2  Mendes, Ana R. Marques^3,4  Morrison, Liam^3,4  Morley, Audrey^1,2 

[1] Natl Univ Ireland, Sch Geog & Archaeol, Galway Univ Rd, Galway, Ireland

[2] Natl Univ Ireland, Ryan Inst, Galway Univ Rd, Galway, Ireland

[3] Natl Univ Ireland, Sch Nat Sci, Earth & Ocean Sci, Galway, Ireland

[4] Natl Univ Ireland, Ryan Inst, Galway, Ireland

关键词: Microplastic;    Shelf;    Sediment;    Raman spectroscopy;    Microfiber;   

DOI  :  10.1016/j.marpolbul.2021.111976

来源: Elsevier

【 摘 要 】

The global distribution of microplastic debris on the sea floor poses an increasing risk to marine organisms and ecosystems. Here, we present a distribution analysis of microplastics collected from eight marine multicores recovered from the Iceland continental shelf and surrounding areas at water depth between 241 and 1628 m. We report a total of 306 microplastics from the size range > 250 ?m-5 mm, of which all were fibers. Microplastic numbers range between 0.119 and 0.768 per gram of dry sediments. In the analysis we assess the potential role of oceanic surface and bottom water currents, organic content, and sediment type on the distribution, deposition, and burial of microplastics in marine sediments. Our results provide the first record of microplastic pollution of marine sediments from the Iceland continental shelf and identify Atlantic Cod feeding and breeding grounds as potential hot spot for the accumulation of marine debris.

【 授权许可】

Free