Lauriane LedieuLaboratoire Eau et Environnement de Nantes · GERS
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September 2021 - present
Laboratoire eau et environnement
- PostDoc Position
- My researches focus on plastic macrolitter inputs from urban contexts as well as their dynamic and fluxes in the receiving hydrosystems.
October 2017 - November 2020
- PhD Student
- The study focused on the particulate transport at a periurban catchment scale through multi-elemental geochemistry. This understanding was based on element from natural and anthropogenic sources (trace metals, pharmaceuticals) quantifications in the particulate phase of a periurban stream, at the catchment scale and during three years. This quantification was coupled with a monitoring of the stream hydro-sedimentary dynamic.
Land-based sources of riverine macrolitter are now recognized as a major concern, but few field data on litter amount, composition and sources are available. This is especially the case for macrolitter hotspots like high frequented roadways that could generate large amount of macrolitter potentially reaching rivers. This dataset provides macrolitte...
Many researches mention the need to identify the land-based sources of riverine macrolitter but few field data on litter amount, composition and sources are available in the scientific literature. Describing macrolitter hotspot dynamics would actually allow a better estimation of fluxes in the receiving environments and a better identification of t...
Pharmaceutical products (PPs) are consumed worldwide and are continuously released into hydrological environments, but are not efficiently removed by sewage treatment plants. Their occurrence within the dissolved phase has been extensively studied, but only a few articles concern solid matrices. The mechanisms and extent of sorption depend on the p...
Le ruissellement est un phénomène épisodique et localisé, donc difficile à mesurer. Il résulte de l'interaction de nombreux facteurs, dont les caractéristiques intrinsèques et de surface du sol, la morphologie du bassin versant, mais également les caractéristiques pluviométriques. Afin d'améliorer la compréhension de la genèse et de la propagation...
Déterminer et quantifier le rôle de la phase particulaire dans les grands cycles géochimiques et le transport des contaminants, est devenu indispensable pour établir des bilans de masse précis et discuter de l’incidence du facteur de forçage d’origine anthropique sur les écosystèmes. Durant ces travaux, le transport particulaire a été étudié à l’éc...
The transfer and storage of chemical elements in particulate matter are controlled by physical, chemical and biological processes. Their dynamics are well understood, especially in environments that show strong tectonic and/or geomorphic pressures, and are frequently reconstructed over centuries or decades to evaluate climate change effects for exa...