Transfer dynamics of macroplastics in estuaries – New insights from the Seine estuary: Part 3. What fate for macroplastics?

  • R. Tramoy
  • , J. Gasperi
  • , L. Colasse
  • , C. Noûs
  • , B. Tassin

Research output: Contribution to journalArticlepeer-review

Abstract

Macroplastic emissions from the Seine estuary to the English Channel were estimated using institutional cleaning of riverbanks, combined with a tagged litter experiment. Cleaning were performed between March 2018 and April 2019 by the non-profit company Naturaul'un over 19 sites covering 20 km of riverbanks. A total of 365 tagged litter (90% macroplastics) was released in the estuary in March (n = 200), at the end of the winter/spring flood 2018, in July (n = 58), August (n = 56) and September 2018 (n = 51) during low river flow periods. Over the total tagged litter, 102 (28%) were recovered by Naturaul'un. Relative to the total amount of macroplastics (>5 cm) collected and the estimated amount of smaller/hidden macroplastics (>5 mm) not collected, the maximum macroplastic emission to the English Channel was estimated to be ~100–200 metric tons per year.

Original languageEnglish
Article number112513
JournalMarine Pollution Bulletin
Volume169
DOIs
Publication statusPublished - 1 Aug 2021

Keywords

  • Flood
  • Institutional cleaning
  • Macroplastic emissions
  • Riverbanks
  • Tagged litter

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