Vertical flux of microplastic, a case study in the Southern Ocean, South Georgia.
Fibres
Floating sediment trap
Fragments
Raman spectroscopy
Vertical transport
Journal
Marine pollution bulletin
ISSN: 1879-3363
Titre abrégé: Mar Pollut Bull
Pays: England
ID NLM: 0260231
Informations de publication
Date de publication:
Aug 2023
Aug 2023
Historique:
received:
27
10
2022
revised:
26
05
2023
accepted:
28
05
2023
medline:
26
7
2023
pubmed:
19
6
2023
entrez:
18
6
2023
Statut:
ppublish
Résumé
Estimated plastic debris floating at the ocean surface varies depending on modelling approaches, with some suggesting unaccounted sinks for marine plastic debris due to mismatches between plastic predicted to enter the ocean and that accounted for at the surface. A major knowledge gap relates to the vertical sinking of oceanic plastic. We used an array of floating sediment traps combined with optical microscopy and Raman spectroscopy to measure the microplastic flux between 50 and 150 m water depth over 24 h within a natural harbour of the sub-Antarctic island of South Georgia. This region is influenced by fishing, tourism, and research activity. We found a 69 % decrease in microplastic flux from 50 m (306 pieces/m
Identifiants
pubmed: 37331275
pii: S0025-326X(23)00549-0
doi: 10.1016/j.marpolbul.2023.115117
pii:
doi:
Substances chimiques
Microplastics
0
Plastics
0
Water Pollutants, Chemical
0
Water
059QF0KO0R
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
115117Informations de copyright
Copyright © 2023 British Antarctic Survey. Published by Elsevier Ltd.. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.