Refine search
Results 1-4 of 4
Assessing ecotoxicity and uptake of metals and metalloids in relation to two different earthworm species (Eiseina horterzsis and Lumbricus terrestris)
2013
Leveque , Thibaut (Université de ToulouseEcolab Laboratoire d'écologie fonctionnelle, Castanet-Tolosan31326 Castanet-Tolosan (France). INP-ENSATUMR 5245 CNRS-INP-UPS) | Capowiez , Yvan (INRA , Avignon (France). UR 1115 Unité de recherche Plantes et Systèmes de Culture Horticoles) | Schreck , Eva (Géosciences Environnement Toulouse, Toulouse(France). UMR 5563 CNRS/UPS/IRD/CNES) | Mazzia , Christophe (Institut Méditerranéen de Biodiversité et d'Écologie Marine et Continentale(France). UMR CNRS 7263) | Auffan , Mélanie (Centre Européen de Recherche et d'Enseignement des Géosciences de l'Environnement, Aix-en-Provence(France). Europôle méditerranéen de l’Arbois) | Foucault , Yann (Université de ToulouseEcolab Laboratoire d'écologie fonctionnelleSociété de Traitement Chimique des Métaux, Castanet-Tolosan31326 Castanet-Tolosan Toulouse(France). INP-ENSATUMR 5245 CNRS-INP-UPS) | Austruy , Annabelle (Université de ToulouseEcolab Laboratoire d'écologie fonctionnelle, Castanet-Tolosan31326 Castanet-Tolosan (France). INP-ENSATUMR 5245 CNRS-INP-UPS) | Dumat , Camille (auteur de correspondance) (Université de ToulouseEcolab Laboratoire d'écologie fonctionnelle, Castanet-Tolosan31326 Castanet-Tolosan (France). INP-ENSATUMR 5245 CNRS-INP-UPS)
Due to diffuse atmospheric fallouts of process particles enriched by metals and metalloids, polluted soils concern large areas at the global scale. Useful tools to assess ecotoxicity induced by these polluted soils are therefore needed. Earthworms are currently used as biotest, however the influence of specie and earthworm behaviour, soil characteristics are poorly highlighted. Our aim was therefore to assess the toxicity of various polluted soils with process particles enriches by metals and metalloids (Pb, Cd, Cu, Zn, As and Sb) collected from a lead recycling facility on two earthworm species belonging to different ecological types and thus likely to have contrasted behavioural responses (Eiseina hortensis and Lumbricus terrestris). The combination of behavioural factors measurements (cast production and biomass) and physicochemical parameters such as metal absorption, bioaccumulation by earthworms and their localization in invertebrate tissues provided a valuable indication of pollutant bioavailability and ecotoxicity. Soil characteristics influenced ecotoxicity and metal uptake by earthworms, as well as their soil bioturbation.
Show more [+] Less [-]Cu phytoextraction and biomass utilization as essential trace element feed supplements for livestock
2022
Wang, Xiaolin | Fernandes de Souza, Marcella | Mench, Michel, J | Li, Haichao | Ok, Yong Sik | Tack, Filip M.G. | Meers, Erik | Universiteit Gent = Ghent University (UGENT) | Biodiversité, Gènes & Communautés (BioGeCo) ; Université de Bordeaux (UB)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) | Korea Polytechnic University (KPU)
International audience | Copper (Cu), as an essential element, is added to animal feed to stimulate growth and prevent disease. The forage crop alfalfa (Medicago sativa L.) produced during Cu phytoextraction may be considered a biofortified crop to substitute the Cu feed additives for livestock production, beneficially alleviating Cu contamination in soils and reducing its input into agriculture systems. To assess this, alfalfa was grown in three similar soils with different Cu levels, i.e., 11, 439 and 779 mg kg−1 for uncontaminated soil (A), moderately Cu-contaminated soil (B) and highly Cu-contaminated soil (C), respectively. EDDS (Ethylenediamine-N,N′-disuccinic acid) was applied to the soils seven days before the first cutting at four rates (0, 0.5, 2 and 5 mmol kg−1) to enhance bioavailable Cu uptake. Alfalfa grew well in soils A and B but not in the highly Cu-contaminated soil. After applying EDDS, a significant biomass reduction of the first cutting shoot was only observed with 5 mmol kg−1 EDDS in the highly Cu-contaminated soil, with a 45% (P < 0.05) decrease when compared to the control. Alfalfa grown in the three soils gradually wilted after the first cutting with 5 mmol kg−1 EDDS, and Cu concentrations in the first cutting shoot were augmented strongly, by 250% (P < 0.05), 3500% (P < 0.05) and 6700% (P < 0.05) compared to the controls, respectively. Cu concentrations in alfalfa shoots were found to be higher in this study than in some fodder plants and further augmented in soils with higher Cu levels and with EDDS application. These findings suggest that alfalfa grown on clean soils or soils with up to 450 mg Cu kg−1 (with appropriate EDDS dosages) has the potential to be considered as a partial Cu supplementation for livestock. This research laid the foundation for the integration between Cu-phytoextraction and Cu-biofortification for livestock.
Show more [+] Less [-]Physicochemical and biological characterisation of different dredged sediment deposit sites in France
2006
Capilla, Xavier | Schwartz, Christophe | Bedell, Jean-Philippe | Sterckeman, Thibault | Perrodin, Yves | Morel, Jean-Louis | Laboratoire des Sciences de l'Environnement ; École Nationale des Travaux Publics de l'État (ENTPE) | Laboratoire Sols et Environnement (LSE) ; Institut National de la Recherche Agronomique (INRA)-Université de Lorraine (UL)
Physicochemical and biological characterisation of different dredged sediment deposit sites in France
Show more [+] Less [-]Sensitivity of a marine amphipod to non-contaminant variables and to copper in the sediment [Gammarus locusta]
1995
Costa, F.O. (Universidad Nova de Lisboa (Portugal)) | Correia, A.D. | Costa, M.H.