Skip to Main content Skip to Navigation
Journal articles

Microplastics in a salt-wedge estuary: Vertical structure and tidal dynamics

Abstract : The abundance and distribution of microplastics in estuaries have been barely documented, and generally without accounting for the vertical structure in the water column. This study presents the very first data on the occurrence and distribution of microplastics in the Adour Estuary, SW France. The experimental data set was complemented by numerical simulations to gain understanding of the behaviour of suspended microplastics. Microplastics were found throughout the water column with a mean abundance of 1.13 part/m 3. Films and fragments were the most abundant types of particles collected. Numerical simulations demonstrated that vertical distribution of microplastics in the water column is highly dependent on particle characteristics and on the local hydrodynamics. The main trend is that neutrally-buoyant microplastics are easily flushed out while heavier microplastics are prone to entrapment in the estuary, in particular under low discharge conditions. The present study suggest that estuaries could be a sink of microplastics.
Document type :
Journal articles
Complete list of metadatas

Cited literature [45 references]  Display  Hide  Download
Contributor : Sous Damien <>
Submitted on : Tuesday, September 22, 2020 - 8:29:45 AM
Last modification on : Monday, October 5, 2020 - 3:28:39 AM


 Restricted access
To satisfy the distribution rights of the publisher, the document is embargoed until : 2021-03-22

Please log in to resquest access to the document



Sophie Defontaine, Damien Sous, Javier Tesan, Mathilde Monperrus, Véronique Lenoble, et al.. Microplastics in a salt-wedge estuary: Vertical structure and tidal dynamics. Marine Pollution Bulletin, Elsevier, 2020, 160, pp.111688. ⟨10.1016/j.marpolbul.2020.111688⟩. ⟨hal-02945061⟩



Record views