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17 results on '"Jean-Philippe Bedell"'

1. RISMEAU dataset: Pharmaceuticals and biocides concentrations in urban and agricultural sludge, amended soil and leachate and their environmental impactsZenodo

Author

Noémie Etienne, Jean-Philippe Bedell, Pierre Benoit, Jean-Luc Bertrand-Krajewski, Elodie Brelot, Christophe Dagot, Margaux Gaschet, Alexandre Guironnet, Isabelle Lamy, Sylvie Nélieu, Dominique Patureau, Olivier Roques, and Laure Wiest

Subjects
Antimicrobial resistance, Ecotoxicological risk assessment, Land-spreading, Manure, Sludge, Soil and leachate contamination, Computer applications to medicine. Medical informatics, R858-859.7, Science (General), Q1-390
Abstract

The RISMEAU project (RISques liés aux résidus de Médicaments, biocides et antibiorésistance d'origine humaine et vétérinaire sur les ressources en EAU du bassin versant de l'Arve – Risks related to residues of pharmaceuticals and biocides, and antimicrobial resistance of human and veterinary origin on the water resources of the 2083 km2 Arve catchment located in the French Alps) was implanted from 2018 to 2024 on the SIPIBEL observatory. It was devoted to the evaluation of (i) transfers of and processes related to pharmaceutical residues and biocides from both urban sludge and manure spread on fields as fertilisers, and (ii) the environmental impacts of land spreading, in particular the ecotoxicological risks and antimicrobial resistance dissemination. The methodology was based on the physico-chemical, ecotoxicological and antimicrobial resistance (AMR – assessed by molecular biology) characterisation of leachate and soil matrices samples, and focused on organic waste products application at locally representative agronomic rates. This dataset can be reused by other researchers for comparison with their own investigations on this emerging topic under different contexts and conditions, and may contribute to international reviews.The database includes in total 26,217 values, measured on 348 samples of organic waste products, soil, in situ lysimeter leachate, earthworms, plants with 3136 usual physico-chemical values, 15,469 values on pharmaceuticals and biocides concentrations, 6827 bioassay values (ecotoxicity and phytotoxicity) and 785 values of antimicrobial resistance indicators. The 348 samples have been collected from Nov. 2019 to Dec. 2022: 4 samples in 2019, 26 in 2020, 130 in 2021 and 188 in 2022. Regarding AMR, 96 assays coding for most abundant resistance genes in healthy humans, clinically relevant antibiotic resistance genes, biocide resistance genes, heavy metal genes, integrons (class I, II and III), and mobile genetic elements (transposase genes) have been carried out.

Published
2024
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2. Assessing the chronic toxicity of spreading organic amendments on agricultural soil: Tests on earthworms and plants

Author

Olivier Roques, Rémy Bayard, Julia Le Maux, Dominique Patureau, Sylvie Nélieu, Isabelle Lamy, and Jean-Philippe Bedell

Subjects
Chronic ecotoxicity, Eisenia fetida, Medicago sativa, Organic matter characterization, Risk assessment, Sinapis alba, Environmental pollution, TD172-193.5, Environmental sciences, GE1-350
Abstract

Recycling organic wastes on agricultural soils improves the soil quality, but the environmental and health impact of these organic amendments closely depends on their origins, their bio-physicochemical characteristics and the considered organisms potentially affected. The aim of this study was to assess the potential chronic ecotoxicity of spreading organic amendments on agricultural soils. To do this, we characterized three different organic amendments: sewage sludge from an urban wastewater treatment plant, cow manure and liquid dairy manure. Their chronic ecotoxicity was studied through assays exposing earthworms of the species Eisenia fetida and two plants: Medicago sativa and Sinapis alba. Of the three amendments, the sewage sludge presented the highest concentrations of micropollutants and a considerable fraction of available and biodegradable organic matter. The cow manure and liquid dairy manure had lower chemical contamination and similar characteristics with lower biodegradable fractions of their organic matter. No chronic phytotoxicity was evidenced: on the contrary, particularly with sewage sludge, the germination rate and aerial and root biomass of the two plants increased. Considering earthworms, their biomass increased considerably during the reproduction assays in soil amended with sewage sludge, which contained the more bioavailable organic matter. Nonetheless, the earthworms presented an inhibition close to 78% of the production of juveniles when exposed to sewage sludge exceeding 20 g.kg-1 DW (that means 2 times the agronomic dose). This reprotoxic effect was also observed in the presence of liquid dairy manure, but not with cow manure. At the end of the assays, the glycogen and protein reserves in earthworms exposed to sewage sludge were inferior to that of control earthworms, respectively around 50% and 30%. For the earthworms exposed to liquid dairy manure, protein and lipid reserves increased. In the case of liquid dairy manure, this reprotoxic effect did not appear to be linked to the presence of micropollutants. In conclusion, our results confirm the need to use several ecotoxicity assays at different biological levels and with different biological models to assess the ecotoxic impacts of soil amendments. Indeed, although certain organic wastes present a strong nutritional potential for both plants and earthworms, a not inconsiderable risk was apparent for the reproduction of the latter. An integrated ecotoxicity criterion that takes into account a weighted sum of the different results would guide the utilization of organic amendments while ensuring the good health of agricultural ecosystems.

Published
2023
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3. Metal pollution trajectories and mixture risk assessed by combining dated cores and subsurface sediments along a major European river (Rhône River, France)

Author

André-Marie Dendievel, Brice Mourier, Aymeric Dabrin, Hugo Delile, Alexandra Coynel, Antoine Gosset, Yohan Liber, Jean-François Berger, and Jean-Philippe Bedell

Subjects
Geo-accumulation index, Geochemical baselines, Metal contamination, Pollution legacy, River sediments, Environmental sciences, GE1-350
Abstract

In European rivers, research and monitoring programmes have targeted metal pollution from bed and floodplain sediments since the mid-20th century by using various sampling and analysis protocols. We propose to characterise metal contamination trajectories since the 1960s based on the joint use of a large amount of data from dated cores and subsurface sediments along the Rhône River (ca. 512 km, Switzerland–France). For the reconstruction of spatio-temporal trends, enrichment factors (EF) and geo-accumulation (Igeo) approaches were compared. The latter index was preferred due to the recurrent lack of grain-size and lithogenic elements in the dataset. Local geochemical backgrounds were established near (1) the Subalps and (2) the Massif Central to consider the geological variability of the watershed. A high contamination (Igeo = 3–5) was found for Cd, Cu and Zn from upstream to downstream over the period 1980–2000. This pattern is consistent with long-term emissions from major cities and the nearby industrial areas of the Upper Rhône (Geneva, Arve Valley), and Middle Rhône (Lyon, Chemical Corridor, Gier Valley). Hotspots due to Cu and Zn leaching from vineyards, mining, and highway runoff were also identified, while Pb was especially driven by industrial sources. The recovery time of pollution in sediment varied according to the metals and was shorter upstream of Lyon (15–20 years) than downstream (30–40 years). More widely, it was faster on the Rhône than along other European rivers (e.g. Seine and Rhine). Finally, the ecotoxicological mixture risk of metal with Persistent Organic Pollutants (POPs) for sediment-dwelling organisms showed a medium “cocktail risk” dominated by metals upstream of Lyon, although it is enhanced due to POPs downstream, and southward to the delta and the Mediterranean Sea. Overall, this study demonstrates the heterogeneity of the contamination trends along large fluvial corridors such as the Rhône River.

Published
2020
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6. Les Observatoires Hommes-Milieux et le LabEx DRIIHM

Author

Corinne Pardo, Anne-Lise Boyer, Dominique Badariotti, Carole Barthélémy, Jean-Philippe Bedell, Najat Birhy, Eduardo Ferreira da Silva, Damien Davy, Armelle Decaulne, Priscilla Duboz, Larry Fisher, Didier Galop, Fabien Hein, Pascal-Jean Lopez, Patrick Monfort, Y. Noack, Papa Ibnou Ndiaye, François-Michel Le Tourneau, Alejandro Salazar-Burrows, Ecosystèmes continentaux et risques environnementaux (ECCOREV), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), Institut Ecologie et Environnement (INEE), Centre National de la Recherche Scientifique (CNRS), LabEx DRIIHM - ANR-11-LABX-0010, Environnement, Ville, Société (EVS), École normale supérieure de Lyon (ENS de Lyon)-École des Mines de Saint-Étienne (Mines Saint-Étienne MSE), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Université Lumière - Lyon 2 (UL2)-Université Jean Moulin - Lyon 3 (UJML), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Jean Monnet - Saint-Étienne (UJM)-École Nationale des Travaux Publics de l'État (ENTPE)-École nationale supérieure d'architecture de Lyon (ENSAL)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Image, Ville, Environnement (LIVE), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), OHM Fessenheim, Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Population-Environnement-Développement (LPED), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU), OHM vallée du Rhône, Laboratoire d'Ecologie des Hydrosystèmes Naturels et Anthropisés (LEHNA), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-École Nationale des Travaux Publics de l'État (ENTPE)-Centre National de la Recherche Scientifique (CNRS), OHMi Estarreja, Université de Laval, Département de Géographie, OHMi Nunavik, Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Laval, Quebec, QC, Canada, Université d'Aveiro, Portugal, Laboratoire Ecologie, Evolution, Interactions des Systèmes amazoniens (LEEISA), Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Guyane (UG)-Centre National de la Recherche Scientifique (CNRS), OHM Oyapock, Littoral, Environnement, Télédétection, Géomatique (LETG - Nantes ), Université de Brest (UBO)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Nantes Université (Nantes Univ)-Littoral, Environnement, Télédétection, Géomatique UMR 6554 (LETG), Université de Brest (UBO)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut de Géographie et d'Aménagement Régional de l'Université de Nantes (Nantes Univ - IGARUN), Nantes Université - pôle Humanités, Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ)-Nantes Université - pôle Humanités, Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ)-Institut de Géographie et d'Aménagement Régional de l'Université de Nantes (Nantes Univ - IGARUN), Nantes Université (Nantes Univ), Unité Mixte Internationale 'Environnement Santé Sociétés' (ESS), OHMi Tessekere, Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Cheikh Anta Diop [Dakar, Sénégal] (UCAD), Interdisciplinary and Global Environmental Studies (iGLOBES), University of Arizona-Centre National de la Recherche Scientifique (CNRS), Observatoire Homme-Milieu International Pima County Labex DRIIM (OHMI Pima County), Géographie de l'environnement (GEODE), Université Toulouse - Jean Jaurès (UT2J), Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), OHM Pyrénées - haut Vicdessos, Laboratoire Lorrain de Sciences Sociales (2L2S), Université de Lorraine (UL), OHM Pays de Bitche, Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA), OHM Littoral Caraïbe, Hydrosciences Montpellier (HSM), Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM), OHM Littoral méditerranéen, Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE), Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Observatoire Hommes-Milieux du Bassin Minier de Provence (OHM-BMP), Université Cheikh Anta Diop [Dakar, Sénégal] (UCAD), Pôle de recherche pour l'organisation et la diffusion de l'information géographique (PRODIG (UMR_8586 / UMR_D_215 / UM_115)), Université Paris 1 Panthéon-Sorbonne (UP1)-Institut de Recherche pour le Développement (IRD)-AgroParisTech-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Pontificia Universidad Católica de Chile (UC), Observatoire Hommes Milieux international Patagonia - Bahia Exploradores (OHMi Patagonia), Institut d'écologie et environnement, CNRS-INEE, INRAe, BRGM, ANR-11-LABX-0010,DRIIHM / IRDHEI,Dispositif de recherche interdisciplinaire sur les Interactions Hommes-Milieux(2011), Littoral, Environnement, Télédétection, Géomatique UMR 6554 (LETG), and Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ)

Subjects
Sciences de l'environnement, Observatoire Hommes Milieux, [SDE]Environmental Sciences, Environmental Sciences, domain_sde, OHM
Abstract

International audience

Published
2023
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7. Local Food Systems under Global Influence: The Case of Food, Health and Environment in Five Socio-Ecosystems

Author

Michael Rapinski, Richard Raymond, Damien Davy, Thora Herrmann, Jean-Philippe Bedell, Abdou Ka, Guillaume Odonne, Laine Chanteloup, Pascal Jean Lopez, Éric Foulquier, Eduardo Ferreira da Silva, Nathalie El Deghel, Gilles Boëtsch, Véronique Coxam, Fabienne Joliet, Anne-Marie Guihard-Costa, Laurence Tibère, Julie-Anne Nazare, Priscilla Duboz, Éco-Anthropologie (EA), Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Ecologie, Evolution, Interactions des Systèmes amazoniens (LEEISA), Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Guyane (UG)-Centre National de la Recherche Scientifique (CNRS), Helmholtz Zentrum für Umweltforschung = Helmholtz Centre for Environmental Research (UFZ), German Centre for Integrative Biodiversity Research (iDiv), University of Oulu, Laboratoire d'Ecologie des Hydrosystèmes Naturels et Anthropisés (LEHNA), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-École Nationale des Travaux Publics de l'État (ENTPE)-Centre National de la Recherche Scientifique (CNRS), Unité Mixte Internationale 'Environnement Santé Sociétés' (ESS), Centre National de la Recherche Scientifique (CNRS), Université de Lausanne = University of Lausanne (UNIL), Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA), Littoral, Environnement, Télédétection, Géomatique (LETG - Brest), Université de Brest (UBO)-Université de Rennes 2 (UR2)-Institut Universitaire Européen de la Mer (IUEM), Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Nantes Université (Nantes Univ)-Littoral, Environnement, Télédétection, Géomatique UMR 6554 (LETG), Université de Brest (UBO)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut de Géographie et d'Aménagement Régional de l'Université de Nantes (Nantes Univ - IGARUN), Nantes Université - pôle Humanités, Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ)-Nantes Université - pôle Humanités, Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ)-Institut de Géographie et d'Aménagement Régional de l'Université de Nantes (Nantes Univ - IGARUN), Nantes Université (Nantes Univ), Departamento de Geociencias, Ambiente e Ordenamento do Territorio (DGAOT), Universidade do Porto = University of Porto, Unité de Nutrition Humaine (UNH), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Clermont Auvergne (UCA), Espaces et Sociétés (ESO), Normandie Université (NU)-Normandie Université (NU)-Le Mans Université (UM)-Université d'Angers (UA)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut de Géographie et d'Aménagement Régional de l'Université de Nantes (Nantes Univ - IGARUN), Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ)-Institut Agro Rennes Angers, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Biologie, anthropologie, biométrie, épigénétique, lignées : De la diversité des populations à l'individu, de l'identification à l'identité (BABEL), Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Centre d'Etude et de Recherche Travail Organisation Pouvoir (CERTOP), Université Toulouse - Jean Jaurès (UT2J), Université de Toulouse (UT)-Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Centre de Recherche en Nutrition Humaine Rhône-Alpes (CRNH-RA), Centre Hospitalier Universitaire de Saint-Etienne [CHU Saint-Etienne] (CHU ST-E)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-CHU Grenoble-Hospices Civils de Lyon (HCL)-Université Jean Monnet - Saint-Étienne (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA), Cardiovasculaire, métabolisme, diabétologie et nutrition (CarMeN), Université de Lyon-Université de Lyon-Hospices Civils de Lyon (HCL)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), ANR-11-LABX-0010,DRIIHM / IRDHEI,Dispositif de recherche interdisciplinaire sur les Interactions Hommes-Milieux(2011), UNH Space Science Center [Durham] (SSC), University of New Hampshire (UNH), Lyvet, Nathalie, Dispositif de recherche interdisciplinaire sur les Interactions Hommes-Milieux - - DRIIHM / IRDHEI2011 - ANR-11-LABX-0010 - LABX - VALID, Université de Brest (UBO)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut de Géographie et d'Aménagement Régional de l'Université de Nantes (NantesUniv – IGARUN), Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ)-Institut de Géographie et d'Aménagement Régional de l'Université de Nantes (NantesUniv – IGARUN), Normandie Université (NU)-Normandie Université (NU)-Le Mans Université (UM)-Université d'Angers (UA)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut de Géographie et d'Aménagement Régional de l'Université de Nantes (NantesUniv – IGARUN), Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), and Université de Lyon-Université de Lyon-CHU Grenoble-Hospices Civils de Lyon (HCL)-CHU Saint-Etienne-Université Jean Monnet - Saint-Étienne (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Grenoble Alpes (UGA)

Subjects
[SDE] Environmental Sciences, Canada, Portugal, Renewable Energy, Sustainability and the Environment, Geography, Planning and Development, Building and Construction, Management, Monitoring, Policy and Law, Senegal, epidemiologic transition, French Guiana, chronic diseases, [SDE]Environmental Sciences, One Health, nutrition and food transition, Guadeloupe, globalization
Abstract

International audience; Globalization is transforming food systems around the world. With few geographical areas spared from nutritional, dietary and epidemiological transitions, chronic diseases have reached pandemic proportions. A question therefore arises as to the sustainability of local food systems. The overall purpose of this article is to put in perspective how local food systems respond to globalization through the assessment of five different case studies stemming from an international research network of Human-Environment Observatories (OHM), namely Nunavik (Québec, Canada), Oyapock (French Guiana, France), Estarreja (Portugal), Téssékéré (Senegal) and Littoral-Caraïbes (Guadeloupe, France). Each region retains aspects of its traditional food system, albeit under different patterns of influence modelled by various factors. These include history, cultural practices, remoteness and accessibility to and integration of globalized ultra-processed foods that induce differential health impacts. Furthermore, increases in the threat of environmental contamination can undermine the benefits of locally sourced foods for the profit of ultra-processed foods. These case studies demonstrate that: (i) the influence of globalization on food systems can be properly understood by integrating sociohistorical trajectories, socioeconomic and sociocultural context, ongoing local environmental issues and health determinants; and (ii) long-term and transverse monitoring is essential to understand the sustainability of local food systems vis-à-vis globalization.

Published
2023
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9. Past and recent state of sediment contamination by persistent organic pollutants (POPs) in the Rhône River: Overview of ecotoxicological implications

Author

Yohan Liber, Yves Perrodin, Jean-Philippe Bedell, Emmanuelle Bichon, Philippe Marchand, Brice Mourier, Laboratoire d'Ecologie des Hydrosystèmes Naturels et Anthropisés (LEHNA), Centre National de la Recherche Scientifique (CNRS)-Institut National de la Recherche Agronomique (INRA)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-École Nationale des Travaux Publics de l'État (ENTPE), Laboratoire d'étude des Résidus et Contaminants dans les Aliments (LABERCA), Institut National de la Recherche Agronomique (INRA)-Ecole Nationale Vétérinaire, Agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-École Nationale des Travaux Publics de l'État (ENTPE)-Centre National de la Recherche Scientifique (CNRS), Ecole Nationale Vétérinaire, Agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), European Regional Development Fund (ERDF), Agence de l'eau RMC, CNR, EDF, Auvergne-Rhone-Alpes, LabEx DRIIHM through the OHM Vallee du Rhone programme (ANR-11-LABX-0010), PACA, Occitanie, ANR-11-LABX-0010,DRIIHM / IRDHEI,Dispositif de recherche interdisciplinaire sur les Interactions Hommes-Milieux(2011), Institut National de la Recherche Agronomique (INRA)-Université Claude Bernard Lyon 1 (UCBL), Laboratoire de Gestion du Risque En Sciences de l'Environnement (GRESE), Ecole Nationale du Génie Rural, des Eaux et des Forêts (ENGREF), Institut de Recherches Historiques du Septentrion (IRHiS) - UMR 8529 (IRHiS), Centre National de la Recherche Scientifique (CNRS)-Université de Lille, and ANR-11-LABX-0010/11-LABX-0010,LabEx DRIIHM,Dispositif de recherche interdisciplinaire sur les Interactions Hommes-Milieux(2011)

Subjects
polychlorinated, Environmental Engineering, 010504 meteorology & atmospheric sciences, 010501 environmental sciences, Organochlorine, 01 natural sciences, Deposition (geology), Polybrominated diphenyl ethers, Environmental Chemistry, guidelines, Waste Management and Disposal, cores, 0105 earth and related environmental sciences, Pollutant, OHM Vallee du Rhone, Brominated flame retardants Organochlorine pesticides Polychlorinated compounds Sediment cores Sediment quality guidelines Rhône River, Organochlorine pesticide, Sediment, Rhône river, pesticides, Contamination, retardants, [SDE.ES]Environmental Sciences/Environmental and Society, Pollution, 6. Clean water, sediment, quality, flame, 13. Climate action, Bioaccumulation, Environmental chemistry, [SDE]Environmental Sciences, Brominated, Environmental science, Polybrominated Biphenyls, compounds, [SDE.BE]Environmental Sciences/Biodiversity and Ecology
Abstract

International audience; Twenty-one sediment samples were taken from five dated sediment cores collected along the Rhône River from 2008 to 2011. A total of 17 polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs), 7 polychlorinated biphenyls (PCBs), 8 polybrominated diphenyl ethers (PBDEs), 3 polybrominated biphenyls (PBBs), 3 hexabromocyclododecanes (HBCD) and 31 organochlorine pesticides (OCPs) were investigated to provide information on deposition dynamics in time and space, but also regarding the ecotoxicological risks associated with these contaminants. Median concentrations of total PBDEs are nine times lower than the levels of total PCBs along the entire studied stretch of the Rhône River. The results show that total PBDEs concentrations range from 0.06 to 239 μg·kg−1 DW with a median value of 3.81 μg·kg−1 DW and a maximum concentration measured in the years 2000s. These maximum concentrations are identical to those measured for total PCBs at the end of the 1990s, but show a different pattern of distribution. Abnormal dichlorodiphenyltrichloroethane (DDT) levels were also detected in the downstream section of the river, with a peak concentration of 147.5 μg·kg−1 DW measured at the GEC site from 2005 onwards. Analyses of the enantiomeric fractions reveal a fresh input resulting from a technical formulation. Sediments from the core sampled at the most downstream site (GEC) are found to be highly toxic to organisms living nearby, particularly because of the total PCDD/Fs, DDE and DDT levels. In addition, based on available sediment quality guidelines, there may be a potential bioaccumulation risk for humans not only for these three compounds of concern but also for total PCBs and 7 out of the 8 analysed PBDEs.Graphical abstract

Published
2019
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10. A Bayesian network approach for the identification of relationships between drivers of chlordecone bioaccumulation in plants

Author

Cyril Feidt, Régis Tournebize, Yohan Liber, Maurice Mahieu, Denis Cornet, Jean-Philippe Bedell, François Laurent, Laboratoire d'Ecologie des Hydrosystèmes Naturels et Anthropisés (LEHNA), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-École Nationale des Travaux Publics de l'État (ENTPE)-Centre National de la Recherche Scientifique (CNRS), ToxAlim (ToxAlim), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Ecole Nationale Vétérinaire de Toulouse (ENVT), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Ecole d'Ingénieurs de Purpan (INPT - EI Purpan), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Amélioration génétique et adaptation des plantes méditerranéennes et tropicales (UMR AGAP), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Agrosystèmes tropicaux (ASTRO), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Unité de Recherches Animal et Fonctionnalités des Produits Animaux (URAFPA), Université de Lorraine (UL)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Unité de Recherches Zootechniques (URZ), Métabolisme et Xénobiotiques (ToxAlim-MeX), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Toulouse III - Paul Sabatier (UT3), and convention DRTT2017-162-68 of the prefectures of Guadeloupe and Martinique in the framework of the Plan Chlordecone III

Subjects
[SDV.SA]Life Sciences [q-bio]/Agricultural sciences, Insecticides, Health, Toxicology and Mutagenesis, media_common.quotation_subject, West Indies, Land management, H02 - Pesticides, 010501 environmental sciences, Biology, 01 natural sciences, Pollution par l'agriculture, Environmental Chemistry, Soil Pollutants, Guadeloupe, Insecticide, 0105 earth and related environmental sciences, media_common, West indies, Land use, Méthode statistique, Ecology, Bayesian network modeling, U10 - Informatique, mathématiques et statistiques, Bayesian network, Bayes Theorem, General Medicine, 15. Life on land, Pesticide, Pollution, Bioaccumulation, Chlordecone, Gestion foncière, Identification (biology), Habit, Chlordécone, [STAT.ME]Statistics [stat]/Methodology [stat.ME], P02 - Pollution
Abstract

International audience; Plants were sampled from four different types of chlordecone-contaminated land in Guadeloupe (West Indies). The objective was to investigate the importance of biological and agri-environmental parameters in the ability of plants to bioaccumulate chlordecone. Among the plant traits studied, only the growth habit significantly affected chlordecone transfer, since prostrate plants concentrated more chlordecone than erect plants. In addition, intensification of land use has led to a significant increase in the amount of chlordecone absorbed by plants. The use of Bayesian networks uncovers some hypothesis and identifies paths for reflection and possible studies to identify and quantify relationships that explain our data.

Published
2020
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11. Bioavailability and bioaccumulation of heavy metals of several soils and sediments (from industrialized urban areas) for Eisenia fetida

Author

Myriam Hammada, Manuela Inácio, L. Leduc, Christine Bazin, C. Forêt, C. Coelho, Jean-Philippe Bedell, Laboratoire d'Ecologie des Hydrosystèmes Naturels et Anthropisés (LEHNA), Centre National de la Recherche Scientifique (CNRS)-Institut National de la Recherche Agronomique (INRA)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-École Nationale des Travaux Publics de l'État (ENTPE), PROVADEMSE, INSAVALOR, Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA), Universidade de Aveiro, GeoBioTec, ANR-11-LABX-0010/11-LABX-0010,LabEx DRIIHM,Dispositif de recherche interdisciplinaire sur les Interactions Hommes-Milieux(2011), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-École Nationale des Travaux Publics de l'État (ENTPE)-Centre National de la Recherche Scientifique (CNRS), and ANR-11-LABX-0010,DRIIHM / IRDHEI,Dispositif de recherche interdisciplinaire sur les Interactions Hommes-Milieux(2011)

Subjects
Eisenia fetida, Environmental Engineering, Bioavailability, 010504 meteorology & atmospheric sciences, Fractionation, 010501 environmental sciences, 01 natural sciences, Metallic trace elements, Soil, Metals, Heavy, 11. Sustainability, Animals, Soil Pollutants, SET/ERITME index, Environmental Chemistry, Oligochaeta, Waste Management and Disposal, 0105 earth and related environmental sciences, Invertebrate, biology, Sediment, Risk evaluation, Contamination, biology.organism_classification, Pollution, Mobility pollutant, 6. Clean water, 13. Climate action, Bioaccumulation, Environmental chemistry, [SDE]Environmental Sciences, Soil water, Environmental science, [SDE.BE]Environmental Sciences/Biodiversity and Ecology, Water Pollutants, Chemical, Environmental Monitoring
Abstract

International audience; Soils and sediments are susceptible to anthropogenic contamination with Metallic Trace Elements (MTEs) and it can present some risks to ecosystems and human health. The levels of Cd, Cu, Fe, Ni, Pb and Zn were assessed in soils (C, G, K, L) from Estarreja (Portugal) and sediments from a stormwater basin in Lyon (DJG), a harbour (LDB) and a Rhône river site (TRS) (France).An ecotoxicological study was performed with Eisenia fetida (E. fetida) to infer about potential transfer risks to the soil invertebrates. To assess risks associated with MTEs contamination, it is important to know their total concen- trations, fractionation and the potential available fractions. CaCl2, DTPA and NaOAc extractions were performed to assess the extractable and available MTEs fractions. The studied sediments were much more contaminated than the soils for all the MTEs analysed. The trace elements fraction linked with DTPA extraction shows higher values when compared with the NaOAc and the CaCl2 pools.Low mortality effects were recorded in the tests with E. fetida. The MTEs levels in soils and sediments and the concen- trations bioaccumulated in adult earthworms contributed to a reduction in the number of juveniles produced. E. fetida adults and juveniles accumulated ETMs as follows: Cd N Cu = Zn N Ni N Pb N Fe. Determined BAFs were mostly lower than 1 with some higher values for Cd, Cu and Zn. Calculated SET and ERITME indexes allowed to classify the samples from the most to the less toxic for E. fetida as: LDB N DJG N L N G N C N K N TRS. Despite this order of toxicity, the earth- worms exposed to the sediment TRS presented the lowest reproduction rate. The combination of “chemical” measure- ments with the calculation of BAFs, but especially SET and ERITME indexes can be a useful tool in risk assessment.

Published
2018
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12. Socio-environmental implications of process-based restoration strategies in large rivers: should we remove novel ecosystems along the Rhône (France)?

Author

Bianca Räpple, Céline Bertrand, Maxine Thorel, Stéphanie Fayolle, Gabrielle Seignemartin, Benjamin Oursel, Alvaro Tena-Pagan, Jonh C Stella, Thierry Winiarski, Hervé Piégay, Evelyne Franquet, Charles-Robin Gruel, Dad Roux-Michollet, Fanny Arnaud, Jean-Philippe Bedell, Gwenaëlle Roux, Vincent Wawrzyniak, Carole Barthelemy, Pierre Marmonier, Biologie des mollusques marins et des écosystèmes associés (BioMEA), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Centre National de la Recherche Scientifique (CNRS), Environnement Ville Société (EVS), École normale supérieure - Lyon (ENS Lyon)-Université Lumière - Lyon 2 (UL2)-Université Jean Moulin - Lyon 3 (UJML), Université de Lyon-Université de Lyon-Université Jean Monnet [Saint-Étienne] (UJM)-École Nationale des Travaux Publics de l'État (ENTPE)-École des Mines de Saint-Étienne (Mines Saint-Étienne MSE), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-École nationale supérieure d'architecture de Lyon (ENSAL)-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Laboratoire Population-Environnement-Développement (LPED), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU), Laboratoire d'Ecologie des Hydrosystèmes Naturels et Anthropisés (LEHNA), Institut National de la Recherche Agronomique (INRA)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-École Nationale des Travaux Publics de l'État (ENTPE)-Centre National de la Recherche Scientifique (CNRS), GRAIE, Institut méditerranéen de biodiversité et d'écologie marine et continentale (IMBE), Avignon Université (AU)-Aix Marseille Université (AMU)-Institut de recherche pour le développement [IRD] : UMR237-Centre National de la Recherche Scientifique (CNRS), ANR-11-LABX-0010/11-LABX-0010,LabEx DRIIHM,Dispositif de recherche interdisciplinaire sur les Interactions Hommes-Milieux(2011), Institut National des Sciences Appliquées de Lyon (INSA Lyon), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-École nationale supérieure d'architecture de Lyon (ENSAL)-École des Mines de Saint-Étienne (Mines Saint-Étienne MSE), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-École Nationale des Travaux Publics de l'État (ENTPE)-Université Jean Monnet [Saint-Étienne] (UJM)-Université Jean Moulin - Lyon 3 (UJML), Université de Lyon-Université Lumière - Lyon 2 (UL2)-École normale supérieure - Lyon (ENS Lyon), Université Claude Bernard Lyon 1 (UCBL), ANR-11-LABX-0010,DRIIHM / IRDHEI,Dispositif de recherche interdisciplinaire sur les Interactions Hommes-Milieux(2011), Environnement, Ville, Société (EVS), École normale supérieure de Lyon (ENS de Lyon)-École des Mines de Saint-Étienne (Mines Saint-Étienne MSE), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Université Lumière - Lyon 2 (UL2)-Université Jean Moulin - Lyon 3 (UJML), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Jean Monnet - Saint-Étienne (UJM)-École Nationale des Travaux Publics de l'État (ENTPE)-École nationale supérieure d'architecture de Lyon (ENSAL)-Centre National de la Recherche Scientifique (CNRS), and Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-École nationale supérieure d'architecture de Lyon (ENSAL)-École des Mines de Saint-Étienne (Mines Saint-Étienne MSE)

Subjects
010504 meteorology & atmospheric sciences, Hydraulic engineering, Risk analysis, media_common.quotation_subject, Ecology (disciplines), 0208 environmental biotechnology, Interdisciplinary assessment, Rhône, Context (language use), 02 engineering and technology, 01 natural sciences, Novel ecosystem, 14. Life underwater, Restoration ecology, Bank erosion, 0105 earth and related environmental sciences, media_common, OHM Vallée du Rhône, River restoration, Groyne, Global and Planetary Change, [SHS.SOCIO]Humanities and Social Sciences/Sociology, business.industry, Environmental resource management, 15. Life on land, [SDE.ES]Environmental Sciences/Environmental and Society, 6. Clean water, 020801 environmental engineering, 13. Climate action, Riprap removal, [SHS.ENVIR]Humanities and Social Sciences/Environmental studies, Conceptual model, business
Abstract

International audience; River restoration efforts require interdisciplinary approaches involving fluvial geomorphology, hydraulic engineering, ecology, sedimentology, chemistry, social geography, and sociology. We investigated the functioning of artificial structures called “Casiers Girardon” (groyne fields) in the Rhône River. We assessed potential benefits and risks linked to removing the Rhône groyne fields in a restoration context, with particular focus on the potential for increased bank erosion. Hydraulic, morphological, chemical, ecological, and social issues resulting from dismantlement were studied for terrestrialized and aquatic Casiers Girardon. Only 10% of Casiers Girardon have maintained their aquatic features, whereas most of the Casiers are terrestrialized. Our results help to confirm the effectiveness of restoration actions; however, they also indicate uncertainties and additional knowledge needs, especially in regard to potential incompatibilities between Casier restoration and conservation. Then, an interdisciplinary conceptual model was developed to identify interventions to be considered in Casiers Girardon, according to their terrestrialization rate and physiochemical characteristics (connectivity, amount of gravel vs. fine sediment, contamination level). This model synthetizes scientific results and expert judgment and provides management recommendations based on ecological and sociological expectations about the restoration of Casiers Girardon. The model highlights high heterogeneity in functioning and ecological potential between terrestrialized and aquatic Casiers. Dismantling of terrestrialized Casiers has strong potential to provide multiple benefits, whereas aquatic Casiers could be maintained as valuable backwaters. The managing guidelines for the Casiers Girardon of the Rhône River should be adapted according to local conditions, as well as expected benefits and needs, and conducted in co-ordination with all actors involved in and affected by the restoration.

Published
2018
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13. Dynamics of Zn in an urban wetland soil–plant system: Coupling isotopic and EXAFS approaches

Author

Marine Queyron, Géraldine Sarret, Denis Testemale, Valérie Magnin, Anne Marie Aucour, Jean-Philippe Bedell, Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement [Lyon] (LGL-TPE), École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Ecologie des Hydrosystèmes Naturels et Anthropisés (LEHNA), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-École Nationale des Travaux Publics de l'État (ENTPE)-Centre National de la Recherche Scientifique (CNRS), Institut des Sciences de la Terre (ISTerre), Université Joseph Fourier - Grenoble 1 (UJF)-Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)-Institut national des sciences de l'Univers (INSU - CNRS)-Institut de recherche pour le développement [IRD] : UR219-PRES Université de Grenoble-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Matériaux, Rayonnements, Structure (MRS), Institut Néel (NEEL), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS), European Synchroton Radiation Facility [Grenoble] (ESRF), Centre National de la Recherche Scientifique (CNRS)-Institut National de la Recherche Agronomique (INRA)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-École Nationale des Travaux Publics de l'État (ENTPE), Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-PRES Université de Grenoble-Institut de recherche pour le développement [IRD] : UR219-Institut national des sciences de l'Univers (INSU - CNRS)-Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)-Université Joseph Fourier - Grenoble 1 (UJF), MRS - Matériaux, Rayonnements, Structure, Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF), ESFR, FAME Beamline, Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement (LGL-TPE), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS), and Matériaux, Rayonnements, Structure (NEEL - MRS)

Subjects
Rhizosphere, Aqueous solution, 010504 meteorology & atmospheric sciences, biology, Ecology, Stable isotope ratio, media_common.quotation_subject, Sorption, Fractionation, 010501 environmental sciences, Phalaris arundinacea, biology.organism_classification, 01 natural sciences, 6. Clean water, chemistry.chemical_compound, Speciation, chemistry, Geochemistry and Petrology, Environmental chemistry, Hydroxide, [SDE.BE]Environmental Sciences/Biodiversity and Ecology, 0105 earth and related environmental sciences, media_common
Abstract

Plants play a key role in the stabilization of metals in contaminated environments. Studies have been performed on Zn uptake and storage mechanisms, mainly for Zn hyperaccumulating plants, though less is known about Zn stabilization in the rhizosphere of non-accumulating plants. This study was focused on the dynamics of Zn in a whole soil–litter–plant system and the processes controlling Zn mobilization and stabilization. The site studied was an infiltration basin receiving urban stormwater, in which Phalaris arundinacea (reed canary grass) developed spontaneously. A combination of chemical extractions (CaCl 2 , DTPA), EXAFS spectroscopy and Zn stable isotope measurements was applied for the water inlet, soil, plant organs and decaying biomass. Zn speciation changed from the water inlet to the soil. In the soil, Zn was present as Zn-layered double hydroxide (Zn-LDH), tetrahedral and octahedral sorbed Zn species. The formation of Zn-LDH participates in Zn stabilization. Tetrahedral Zn species, which were partly DTPA exchangeable, were enriched in heavy isotopes, whereas octahedral Zn (Zn-LDH and sorbed species) were enriched in light isotopes. Based on a linear model between δ 66 Zn and Zn speciation, δ 66 Zn for pure tetrahedral and octahedral end-members were estimated at ca. 0.33‰ and 0.04‰, respectively. In the plant, a mixture of octahedral Zn (attributed to aqueous Zn-organic acid complexes present in the symplasm), and tetrahedral Zn (attributed to apoplasmic Zn-cell wall complexes) was observed in all organs. Large enrichment in light isotopes from the soil to the plant Δ 66 Zn (of ca. −0.6‰) was observed. The stem was enriched in light isotopes versus roots and, to a lesser extent, versus leaves. The results suggest that Zn was taken up via a low-affinity transport system and that Zn was sequestrated in the stem symplasm after transit through leaves. Finally, intense Zn exchanges were observed between the decaying biomass and the soil, with the sorption of heavy Zn from the soil to cell wall remains and release of light Zn to the soil. Overall, this study provides a complete overview of Zn cycling in an urban wetland soil–plant system, and describes several changes in Zn speciation with Zn isotopic fractionation processes in a complex system.

Published
2015
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15. Zn Speciation and Stable Isotope Fractionation in a Contaminated Urban Wetland Soil-Typha latifolia System

Author

Géraldine Sarret, Marine Queyron, Romain Tholé, Aline Lamboux, Jean-Philippe Bedell, Anne-Marie Aucour, Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement (LGL-TPE), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement [Lyon] (LGL-TPE), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-École normale supérieure - Lyon (ENS Lyon)

Subjects
media_common.quotation_subject, Context (language use), 010501 environmental sciences, 010502 geochemistry & geophysics, Typhaceae, 01 natural sciences, Plant Roots, Soil, Isotopes, Botany, Environmental Chemistry, 0105 earth and related environmental sciences, media_common, Rhizosphere, Typha, biology, Stable isotope ratio, Chemistry, Sorption, General Chemistry, biology.organism_classification, Soil contamination, Speciation, Zinc, [SDU]Sciences of the Universe [physics], Environmental chemistry, Wetlands, Water Pollutants, Chemical
Abstract

Wetlands play a key role in the immobilization of metallic contaminants. In this context the mechanisms of Zn sequestration and Zn transfer and storage in Typha latifolia L. colonizing a frequently flooded contaminated soil were studied. A combination of EXAFS spectroscopy, micro X-ray fluorescence (mu XRF) and Zn isotope measurements was applied to soil, plant organs and decaying biomass. Zn was present in the soil as Znlayered double hydroxide, as tetrahedral and octahedral sorbed Zn species, and as ZnS. Octahedral and tetrahedral Zn (attributed to symplastic Zn organic acid and apoplasmic Zn cell wall complexes, respectively) and Zn thiol species were observed in the roots, rhizomes and stems. Iron plaque was present on the rhizomes and roots. Enrichment in light isotopes for Zn sorbed on the plaque relative to the soil (Delta Zn-66(plaque-soil) -0.3 to -0.1%0) suggested the dissolution of ZnS (enriched in light isotopes) in the rhizosphere with subsequent Zn2+ sorption on the root plaque. Furthermore, enrichment in light isotopes of stems relative to leaves (Delta Zn-66(stem-leaves) = -0.2%o) suggested the remobilization of Zn via the phloem, from leaves back to the stems. Overall these data highlight the role of thiols in controlling Zn speciation during its transfer and storage in T. latifolia.

Published
2017
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16. Transfer and effects of brominated flame retardants (BFRs) on three plant species and one earthworm species in anthroposoils

Author

Coelho Macedo, Cláudia Filipa, STAR, ABES, Laboratoire d'Ecologie des Hydrosystèmes Naturels et Anthropisés (LEHNA), Centre National de la Recherche Scientifique (CNRS)-Institut National de la Recherche Agronomique (INRA)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-École Nationale des Travaux Publics de l'État (ENTPE), Université de Lyon, Jean-Philippe Bedell, Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-École Nationale des Travaux Publics de l'État (ENTPE)-Centre National de la Recherche Scientifique (CNRS), and Jean-philippe Bedell

Subjects
Mobility, Bioavailability, Eisenia fetida, Index SET/ERITME, Évaluation du risque, Contaminants organiques, Risk evaluation, Plantes, [SDV.SA.SDS]Life Sciences [q-bio]/Agricultural sciences/Soil study, Plants, Brominated flame retardants, Mobilité, Organic contaminants, Biodisponibilité, SET/ERITME index, Retardateurs de flamme bromés, [SDV.SA.SDS] Life Sciences [q-bio]/Agricultural sciences/Soil study
Abstract

A comprehensive study was conducted in two distinct areas (Estarreja in Portugal, noted EST, and Casier Peyraud 6 in France, noted PEY) to assess the contamination levels as well as their behavior in soils and the potential risks posed by these contaminants to soil organisms. The principal aim was to evaluate the environmental mobility of brominated flame retardants (BFRs) in a terrestrial ecosystem, namely to earthworms (Eisenia fetida) and plants (alfalfa (Medicago sativa), watercress (Nasturtium officinale) and white mustard (Sinapis alba)), concerning the BFRs transfer risk evaluation. The Bioaccumulation factor (BAF) as well as the SET and ERITME indexes were calculated. The BAF allow to determine if a substance is accumulated in a certain organism and if there exists the risk of entry and diffusion along the food chain. SET and ERITME indexes allow to rank the tested sites according to the effective OCs transfer from anthroposoils to the tested organisms and have an idea of the potential risk to the ec system. The SET index gives a global idea of the excess of transfer for all the contaminants in the studied matrices. The ERITME index allows to evaluate the possible inherent global environmental risk associated with the excess of transfer on the considered contaminants. Considering the ERITME values, the studied matrices can be classified in an apparent increasing order of toxicity that it is also in accordance with the levels of OCs found in the all the tested organisms (E. fetida, alfalfa, cress and mustard)., Une étude approfondie a été menée dans deux zones distinctes (Estarreja au Portugal, noté EST, et Casier Peyraud 6 en France, noté PEY) pour évaluer les niveaux de contamination, ainsi que leurs comportements dans des anthroposols et les risques potentiels de ces contaminants pour des organismes vivants du sol. L’objectif principal étant d’évaluer la mobilité environnementale des retardateurs de flamme bromés (RFBs) dans un écosystème terrestre, notamment vers les vers de terre (Eisenia fetida) et les plants (luzerne (Medicago sativa), cresson (Nasturtium officinale), moutarde blanche (Sinapsis alba), dans une prospective d’évaluation du risque de transferts de ces molécules.Le facteur de bioaccumulation (BAF) ainsi que les indices SET et ERITME ont été calculés. Le BAF permet de déterminer si une substance est accumulée dans un organisme donné et s’il existe un risque d’entrée et de diffusion tout au long de la chaine alimentaire. Les indices SET et ERITME permettent de classer les sites testés en fonction du transfert efficace des COs par les anthroposols aux organismes testés, et d’avoir une idée du risque potentiel pour l’écosystème. L’indice SET donne une idée globale de l’excès de transfert pour tous les contaminants dans les matrices étudiées. L’indice ERITME permet d’évaluer le risque environnemental global inhérent associé à l’excès de transfert des contaminants considérés. Compte tenu des valeurs ERITME, les matrices étudiées peuvent être classées dans un ordre de toxicité qui est aussi conforme pour l’ensemble des organismes testés (E. fetida, luzerne, cresson et moutarde).

Published
2019

17. Study of biological determinants of chlordecone transfer in the plant

Author

Liber, Yohan, STAR, ABES, Laboratoire d'Ecologie des Hydrosystèmes Naturels et Anthropisés (LEHNA), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-École Nationale des Travaux Publics de l'État (ENTPE)-Centre National de la Recherche Scientifique (CNRS), Université de Lyon, and Jean-Philippe Bedell

Subjects
[SDV.TOX.TVM] Life Sciences [q-bio]/Toxicology/Vegetal toxicology and mycotoxicology, Chlordecone, Transferts, Determinant, [SDV.TOX.TVM]Life Sciences [q-bio]/Toxicology/Vegetal toxicology and mycotoxicology, Uptake, Plante, Plant, Chlordécone, Déterminants, Phytoremediation
Abstract

The objective of this thesis is to understand the reasons why some plants are able to absorb more organic pollutants than others. The aim is to understand the parameters that, at the plant level, control the penetration into the roots and then the transfer to the aerial parts. Chlordecone was selected as a study molecule for its physico-chemical characteristics suitable for the study of soil-plant transfers (lowvolatility and relative hydrophobicity) but also because of the high stakes around contaminated soils in the FrenchWest Indies. Initially, we decided to relate the processes linked to plant growth to the capacity to accumulate chlordecone during laboratory tests. Model grasses, such as wheat ormiscanthus, allowed us to identify the biological traits involved in the absorption and then translocation of the molecule in the different parts of the plant. At the end of this first phase, the efficiency of transpiration, which also reflects the plant’s ability to use water, emerged as the main determinant of the concentration of chlordecone in the plant. In a second phase, we sought to assess the potential for contamination of the spontaneous flora of the contaminated fields in Guadeloupe, through stratified sampling, i.e. sampling oriented by a priori knowledge or by certain determinants highlighted during the laboratory phase. In 70% of the cases, the analysis of this spontaneous flora enabled us to highlight the significant risk of exceeding regulatory thresholds in animal meat fed with the plant cover of the contaminated plots. Cultivation practices, such as intensified tillage, also appeared to be significantly correlated with the increase in the amount of chlordecone found in the plant., L’objectif de cette thèse est de comprendre pourquoi certaines plantes sont en mesure d’absorber plus de polluants organiques que d’autres. Il s’agit d’appréhender les paramètres qui, à l’échelle de la plante, régissent l’absorption dans les racines puis le transfert vers les parties aériennes. La chlordécone a été retenue comme molécule d’étude, pour ses caractéristiques physico-chimiques propices à l’étude des transferts sol-plante (faible volatilité et relative hydrophobicité) mais également à cause des enjeux forts autour des sols contaminés dans les Antilles Françaises. Dans un premier temps, nous avons décidé de mettre en relation les processus liés à la croissance de la plante avec la capacité à accumuler la chlordécone lors d’essais en laboratoire. Des graminées modèles, comme le blé ou le miscanthus, nous ont permis d’identifier les traits biologiques impliqués dans l’absorption puis la translocation de la molécule dans les différentes parties de la plante. A l’issue de cette première phase, l’efficience de la transpiration, qui traduit également la capacité de la plante à utiliser l’eau, est apparue comme le principal déterminant de la concentration de la chlordécone dans la plante. Dans un second temps, nous avons cherché à évaluer le potentiel de contamination de la flore spontanée des parcelles contaminées de Guadeloupe, à travers un échantillonnage stratifié, c’est-à-dire orienté par des connaissances à priori ou par certains déterminants mis en évidence lors de la phase de laboratoire. Dans 70% des cas, l’analyse de cette flore spontanée nous a permis de mettre en évidence le risque significatif de dépassement des seuils réglementaires dans la viande animale nourrie avec la couverture végétale des parcelles contaminées. Des pratiques culturales, comme l’intensification du travail du sol, sont également apparues comme étant significativement corrélées à l’augmentation des quantités de chlordécone retrouvées dans la plante.

Published
2020

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