Beached microplastics in the Northwestern Mediterranean Sea

MARINE POLLUTION BULLETIN

卷:142

Article

Constant, Mel^1,2  Kerherve, Philippe^1,2  Mino-Vercellio-Verollet, Morgan^1,2  Dumontier, Marc³  Vidal, Anna Sanchez⁴  Canals, Miguel⁴  Heussner, Serge^1,2 

[1] Univ Perpignan Via Domitia, Ctr Format & Rech Environm Mediterraneens, UMR 5110, 52 Ave Paul Alduy, F-66860 Perpignan, France

[2] CNRS, Ctr Format & Rech Environm Mediterraneens, UMR 5110, 52 Ave Paul Alduy, F-66860 Perpignan, France

[3] Agence Frangaise Biodivers, Parc Nat Marin du Golfe Lion PNMGdL, 2 Impasse Charlemagne, F-66700 Argeles Sur Mer, France

[4] Univ Barcelona, Fac Ciencies Terra, Dept Dinam Terra & Ocea, GRC Geociencies Marines, C Marti Franques S-N, E-08028 Barcelona, Spain

关键词: Microplastics;    Mediterranean Sea;    Gulf of Lion;    Micro-tidal system;    Beach;   

DOI  :  10.1016/j.marpolbul.2019.03.032

来源: Elsevier

【 摘 要 】

Microplastics are small (<5 mm) fragments of plastic debris that are ubiquitous in coastal areas and in open ocean. We have investigated the occurrence and composition of microplastics in beach sediments from the micro-tidal Northwestern Mediterranean Sea. Samples were collected on two beaches (northern and southern site) of the western Gulf of Lion showing markedly different characteristics. Sampling was performed along depositional lower, mid and upper beaches and repeated after 1 month. Concentrations of microplastics in the northern and southern site were highly variable, ranging from 33 to 798 and from 12 to 187 microplastics per kg of dry sediment, respectively. Highest concentrations were found at three specific locations: nearby a local river mouth, within an accretionary area and in a depositional upper beach. The spatial and temporal distribution of beached microplastics seems to be directly dependent on external forcing such as wind, swell, precipitation, outflow and river mouth proximity.

【 授权许可】

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