Floating microplastics in a coastal embayment: A multifaceted issue

Last modified: 
June 30, 2020 - 12:01pm
Type: Journal Article
Year of publication: 2020
Date published: 09/2020
Authors: João Frias, Olga Lyashevska, Haleigh Joyce, Elena Pagter, Roisin Nash
Journal title: Marine Pollution Bulletin
Volume: 158
Pages: 111361
ISSN: 0025326X

Floating microplastic debris at the ocean's surface represents about 1% of all plastics found in the environment, with the remainder thought to be either deposited along the coast or sinks to the bottom of the ocean. This exploratory research on a coastal embayment in the Northeast Atlantic Ocean assesses floating microplastic densities and the potential influence of wind. A total of 1182 floating microplastic particles were retrieved from a total surface seawater volume of 2039.86 m3. The average microplastic density (0.56 ± 0.33 MP m−3) is based on a sample of 20 manta trawls. This study reports primary microplastics (microbeads) floating in Irish coastal waters for the first-time. Compared to similar bays in Europe, Galway Bay has a similar microplastic density range. Microplastics in surface waters are a multifaceted issue therefore, multiple types of sample collection along with associated environmental variables are recommended for coastal monitoring purposes.

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