Quantification of plankton-sized microplastics in a productive coastal Arctic marine ecosystem
| Type | : | ACL |
|---|---|---|
| Nature | : | Production scientifique |
| Au bénéfice du Laboratoire | : | Non |
| Statut de publication | : | Publié |
| Année de publication | : | 2020 |
| Auteurs (7) | : | RIST Sinja VIANELLO Alvise WINDING Mie,hylstofte,sichlau NIELSEN T,g ALMEDA Rodrigo RODRIGUEZ TORRES Rocio VOLLERTSEN Jes |
| Revue scientifique | : | Environmental Pollution |
| Volume | : | 266 |
| Fascicule | : | 1 |
| Pages | : | |
| DOI | : | 10.1016/j.envpol.2020.115248 |
| URL | : | - |
| Abstract | : | Microplastics (MPs) are polluting the Arctic, but our understanding of their abundance, distribution, and sources is limited. This study quantified MPs down to 10 mu m in marine waters of the most populated region in Greenland. A new plastic-free pump-filter system was used to collect MPs from surface waters in the fjord Nuup Kangerlua close to Nuuk. Additionally, we took samples by horizontal tows with a bongo net (300 mu m mesh-size). The median concentrations were 142 MPs m(-3) and 0.12 MPs m(-3) in the pump and bongo samples, respectively. The most abundant polymer was polyester across stations and sampling types. Fibers were the dominant shape in the bongo samples, while non-fibrous particles dominated in the pump samples. MP abundance was lower in the fjord and increased close to Nuuk and towards the open ocean, indicating that Nuuk is an important point source for MPs. In both samples, concentrations of MPs increased with decreasing size, illustrating the importance of quantifying the smallest fraction of MPs. Thus, the use of methods allowing for a quantification of the smallest MPs is vital to reduce the underestimation of MP concentrations in the environment. The smallest size fraction is also most available to plankton-feeding marine invertebrates and an important entry point for MPs into marine food webs. At the found concentrations, immediate adverse effects on the pelagic food webs are unlikely. However, growing anthropogenic activities could increase the risk of MPs to affect the sensitive Arctic ecosystem. (C) 2020 Elsevier Ltd. All rights reserved. |
| Mots-clés | : | - |
| Commentaire | : | - |
| Tags | : | - |
| Fichier attaché | : | - |
| Citation | : |
Rist S, Vianello A, Winding MHS, Nielsen TG, Almeda R, Rodriguez Torres R, Vollertsen J (2020) Quantification of plankton-sized microplastics in a productive coastal Arctic marine ecosystem. Environ Pollut 266 | doi: 10.1016/j.envpol.2020.115248
|