Porteur
Gael Le Roux
Session
2016
Co-porteur(s)
Paula Marinho
Titre
RETROW – InterOHM : RETROtrajectories : Tree Rings, Otoliths and Wetlands PHASE II
Résumé
Les territoires des OHMs sont fréquemment concernés par des pollutions anciennes et actuelles. Ceci est particulièrement vrai pour les éléments trace métalliques comme le plomb, l’arsenic ou le mercure. Le projet RETROW utilise des archives environnementales dans 3 OHMs (Vicdessos, Estarreja et Nunavik) pour reconstruire les chronologies de la pression humaine en termes de pollution dans ces territoires. Les reconstructions combinant différentes archives comme les sédiments, tourbes, cernes d’arbre ou otolithes permettent de caractériser les niveaux naturels antérieurs aux pollutions ainsi que de reconstruire les chronologies de ces pollutions et leurs sources (traçage isotopique). La phase 2 a pour objectifs de compléter les acquis de l’an dernier ainsi que de développer de nouvelles approches comme les mesures isotopiques du plomb dans les tourbières du Nunavik ou bien les mesures de métaux dans les diatomées retrouvées dans les sédiments récoltés lors de la phase I de RETROW à Estarreja.
Type de projet
Projet ROHM
OHM(s) concerné(s)
  • Estarreja
  • Haut-Vicdessos
  • Nunavik
Disciplines
Biogéochimie, Chimie, Dendrochronologie, Dendrologie, Paléoenvironnement, Sédimentologie

Porteur

Gael
Le Roux
Je suis biogéochimiste isotopiste, directeur de recherche au CNRS. Je travaille principalement sur des projets pluri- et interdisciplinaires permettant de comprendre l'impact de l'Homme sur les cycles biogéochimiques de micropolluants (Pb, Sb, Hg... , radionucléides, microplastiques) et ce à différentes échelles spatiales (sol, bassin versant, Continent) et à différentes échelles de temps (Holocène, 3000 dernières années et Anthropocène). Mes travaux s'intègrent dans des projets associant la biogéochimie à l’étude des paléo-environnements, l'archéologie et l'écologie des communautés et écosystèmes. Je m'intéresse en particulier à l'interface atmosphère-sol dans les milieux de hautes altitudes ou de hautes latitudes. J'utilise la rétro-observation via des archives environnementales et l'observation sur le long terme (année, décennie) en utilisant des outils géochimiques et isotopiques. Je développe principalement des projets ayant pour objectif d’identifier et comprendre les spécificités de la zone critique de montagne vis-à-vis des éléments trace potentiellement toxiques : en termes de sources et d’impact pour l’environnement.

Participants

Paula
Marinho
Paula,François,Nuno,Salomé,Sophia,Franco Marinho,De Vleeschouwer,Duraes,Fernandes Pinheiro de Almeida,Hansson,Biondi
AP Reis graduates in Geological Engineering by the University of Aveiro (UA) in 1990 and
obtains her PhD degree in Geosciences by the same university in 1997. During her PhD, AP
Reis carries out research on geochemical exploration of mineral resources. Since obtaining her
PhD degree AP Reis publishes 2 book chapters and 33 papers in international peer review
journals with an accumulated impact factor of 67, over 300 citations and a w-index of 10. AP
Reis also publishes under the name of Paula Reis, Paula Marinho and Amélia Reis. AP Reis is
Guest Editor in Special Issues of Applied Geochemistry and Environmental Geochemistry and
Health. AP Reis has also published about 100 papers in National and International Conferences
Proceedings and is reviewer for several ISI journals. AP Reis has been participating and
coordinating several national and international R&D Projects. AP Reis is member of the
Bioaccessibility Research Group of Europe (BARGE) since 2009 and participates in...
François
De Vleeschouwer
Paula,François,Nuno,Salomé,Sophia,Franco Marinho,De Vleeschouwer,Duraes,Fernandes Pinheiro de Almeida,Hansson,Biondi
Main research interests and expertise:
Tracing environmental changes using elemental and
isotopic geochemistry in continental archives (peat
bogs, lake sediments).
Reconstructing natural and anthropogenic dust fluxes
and sources during the Holocene, and assessing the
impact of dust on climate and environment.
Understanding the dispersion and impact of mining
activities over time.
Nuno
Duraes
Paula,François,Nuno,Salomé,Sophia,Franco Marinho,De Vleeschouwer,Duraes,Fernandes Pinheiro de Almeida,Hansson,Biondi
Nuno Miguel dos Santos Durães is graduated in Geology by Faculty of Sciences, University of Porto (year 2004). He has a post-graduation in Prospection and Evaluation of Geological Resources – Mineral Resources branch, by Faculty of Science, University of Porto (year 2006). He was a doctoral fellow from the Foundation for Science and Technology (Portugal) from 2006 to 2009, and completed his PhD in 2011 with a thesis entitled "Geochemistry of divalent toxic metals in soil-sediment-water-plant system in arid and semi-arid contaminated areas" in Faculty of Science, University of Porto. He is currently a postdoctoral fellow from Foundation for Science and Technology, developing his research, dedicated to the biogeochemical interaction processes Rare Earth Elements between soils and plants, in GEOBIOTEC research unit (University of Aveiro). His research has been devoted to supergenic geochemistry, environmental geochemistry and biogeochemistry areas. He participated in more than 20...
Salomé
Fernandes Pinheiro de Almeida
Paula,François,Nuno,Salomé,Sophia,Franco Marinho,De Vleeschouwer,Duraes,Fernandes Pinheiro de Almeida,Hansson,Biondi
My main domain of specialization is diatom ecology and taxonomy and their use for freshwater quality evaluation. The impact of pollution gradients on diatoms is also being studied from the cellular level to the community level in my research group.
My main research interests are the study of diatoms considering different aspects: taxonomy, ecology, their use for toxicity testing. Changes in diatom community structure, diversity and individual valve teratologies under varying degrees of environmental degradation are also being studied.
Development of water assessment methods namely predictive models and biochemical markers based on diatoms. Understanding, at the cellular (cell wall and intracellular) and molecular level how hazardous substances such as metals interfere with the morphology and physiology of diatoms. Development of new remediation tools for impacted areas based on this knowledge.
I have collaborated with several institutions and private companies concerning water...
Sophia
Hansson
Paula,François,Nuno,Salomé,Sophia,Franco Marinho,De Vleeschouwer,Duraes,Fernandes Pinheiro de Almeida,Hansson,Biondi
Environmental scientist
Post-doc researcher (INP Toulouse)
funded by Axa research funds
Trace metal transfert and impact in mountain
environments
Franco
Biondi
Paula,François,Nuno,Salomé,Sophia,Franco Marinho,De Vleeschouwer,Duraes,Fernandes Pinheiro de Almeida,Hansson,Biondi
Professor and DendroLab Director
University of Nevada