Article ? AI-assigned paper type based on the abstract. Classification may not be perfect — flag errors using the feedback button. Tier 2 ? Original research — experimental, observational, or case-control study. Direct primary evidence. Environmental Sources Marine & Wildlife Sign in to save

Microplastic trapping in dam reservoirs driven by complex hydrosedimentary processes (Villerest Reservoir, Loire River, France)

Water Research 2022 66 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 45 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Elie Dhivert, Johnny Gaspéri Elie Dhivert, Johnny Gaspéri Johnny Gaspéri Elie Dhivert, Johnny Gaspéri Elie Dhivert, Johnny Gaspéri Johnny Gaspéri Brice Mourier, Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri N.N. Phuong, Johnny Gaspéri Elie Dhivert, Elie Dhivert, Elie Dhivert, Elie Dhivert, Johnny Gaspéri Elie Dhivert, N.N. Phuong, Johnny Gaspéri Elie Dhivert, Elie Dhivert, Brice Mourier, Elie Dhivert, Johnny Gaspéri Elie Dhivert, Brice Mourier, Brice Mourier, Elie Dhivert, Brice Mourier, Johnny Gaspéri Brice Mourier, Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Brice Mourier, Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Elie Dhivert, Elie Dhivert, Elie Dhivert, Elie Dhivert, Brice Mourier, Brice Mourier, Brice Mourier, Johnny Gaspéri Johnny Gaspéri Brice Mourier, Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Brice Mourier, Cécile Grosbois, Cécile Grosbois, Cécile Grosbois, Cécile Grosbois, Cécile Grosbois, Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Brice Mourier, Brice Mourier, Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Brice Mourier, Johnny Gaspéri Brice Mourier, Brice Mourier, Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Brice Mourier, Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Elie Dhivert, Johnny Gaspéri N.N. Phuong, N.N. Phuong, Cécile Grosbois, Elie Dhivert, Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Elie Dhivert, Elie Dhivert, Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Brice Mourier, Brice Mourier, Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Elie Dhivert, Elie Dhivert, Johnny Gaspéri Brice Mourier, Johnny Gaspéri Johnny Gaspéri Brice Mourier, Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Johnny Gaspéri Brice Mourier, Johnny Gaspéri Johnny Gaspéri

Summary

This study investigated microplastic trapping in the Villerest reservoir on the Loire River in France using geomorphological and sedimentological analysis combined with microFTIR imaging. The reservoir concentrated microplastics in sediment at concentrations on the order of 10 items per kilogram dry weight, with spatial distribution driven by complex hydrodynamic and sediment transport processes.

Study Type Environmental

Dam reservoirs can strongly influence the spatial distribution of sediment pollution by microplastics (MP). The Villerest reservoir (Loire River, 36 km long) is a good candidate to study the relationship between MP pollution and hydrosedimentary processes. Sediments were collected from the dam-controlled river section and from 3 km downstream. Geomorphological and sedimentological analyses were performed and microplastics were analysed using µFTIR imaging (polymer identification for particle sizes ≥ 25 µm). This paper highlights strong MP levels (on an order of 10 items/kg dw) over the section characterized by fine-grained sediments (FGS). In coarse-grained sediments (CGS), at the upstream part of the reservoir and downstream of the dam, levels are one order of magnitude lower. FGS are indicator of long-time settling processes. Such conditions lead to foster the MP trapping as low-density suspended materials in the water column. CGS deposits originate from the river bed load. These sediments are transported in high-velocity and high-turbulent flow conditions. Moreover, post-depositional reworking of the finest fraction can occur according to hydrofluctuations. Here are adverse conditions for the MP trapping. The polymer diversity is also higher in FGS than in CGS. However, the range of plastic particle sizes is similar in FGS and CGS and is not related to the sediment grain-size distribution. Moreover, in both FGS and CGS, the polymer abundance is not correlated with the grain-size distribution or with the organic matter content. In the reservoir context, a change in the polymer partition appears over the FGS section in the downstream direction, depending on the polymer density. From a fundamental point of view, this work contributes to improving our understanding of the key role played by hydrosedimentary processes in MP repartition. These findings also have operational scopes, providing significant elements to advocate for a better consideration of MP pollution during sediment management operations.

Read via DOI PubMed

Share this paper

Post Share Share Pin Email