Refine search
Results 1-10 of 22
Long-term pollution by chlordecone of tropical volcanic soils in the French West Indies: A simple leaching model accounts for current residue
2009
Cabidoche , Yves-Marie (INRA , Petit-Bourg (France). UR 0135 Unité de Recherche AgroPédoClimatique de la zone caraïbe) | Achard , Raphaël (Centre de Coopération Internationale en Recherche Agronomique pour le DéveloppementPôle de Recherche Agro-Environnementale de la Martinique, Le LamentinLe Lamentin(France). UPR Systemes Bananes et Ananas) | Cattan , Philippe (Centre de Coopération Internationale en Recherche Agronomique pour le Développement, Capesterre-Belle-Eau(France). UPR Systèmes Bananes et Ananas (Guadeloupe)) | Clermont-Dauphin , Claridge (INRA , Petit-Bourg (France). UR 0135 Unité de Recherche AgroPédoClimatique de la zone caraïbe) | Massat , Félix (Laboratoire Départemental d’Analyses de la Drôme, Valence(France).) | Sansoulet , Julie (INRA , Petit-Bourg (France). UR 0135 Unité de Recherche AgroPédoClimatique de la zone caraïbe)
Chlordecone was applied between 1972 and 1993 in banana fields of the French West Indies. This resulted in long-term pollution of soils and contamination of waters, aquatic biota, and crops. To assess pollution level and duration according to soil type, WISORCH, a leaching model based on first-order desorption kinetics, was developed and run. Its input parameters are soil organic carbon content (SOC) and SOC/water partitioning coefficient (Koc). It accounts for current chlordecone soil contents and drainage water concentrations. The model was valid for andosol, which indicates that neither physicochemical nor microbial degradation occurred. Dilution by previous deep tillages makes soil scrapping unrealistic.Lixiviation appeared the main way to reduce pollution. Besides the SOC and rainfall increases, Koc increased from nitisol to ferralsol and then andosol while lixiviation efficiency decreased. Consequently, pollution is bound to last for several decades for nitisol, centuries for ferralsol, and half a millennium for andosol.
Show more [+] Less [-]Use of the MicroResp™ method to assess pollution-induced community tolerance to metals for lotic biofilms
2011
Tlili , Ahmed (Institut National de Recherche en Sciences et Technologies pour l'Environnement et l'Agriculture, Lyon cedex 09(France). UR MAEP) | Maréchal , Marjorie (Institut National de Recherche en Sciences et Technologies pour l'Environnement et l'Agriculture, Lyon cedex 09(France). UR MAEP) | Montuelle , Bernard (Institut National de Recherche en Sciences et Technologies pour l'Environnement et l'Agriculture, Lyon cedex 09(France). UR MAEP) | Volat , Bernadette (Institut National de Recherche en Sciences et Technologies pour l'Environnement et l'Agriculture, Lyon cedex 09(France). UR MAEP) | Dorigo , Ursula (INRA , Thonon-Les-Bains (France). UMR 0042 Centre Alpin de Recherche sur les Réseaux Trophiques des Ecosystèmes limniques) | Berard , Annette (INRA , Avignon (France). UMR 1114 Environnement Méditerranéen et Modélisation des Agro-Hydrosystèmes )
Understanding the ecological status of aquatic ecosystems and the impact of anthropogenic contamination requires correlating exposure to toxicants with impact on biological communities. Several tools exist for assessing the ecotoxicity of substances, but there is still a need for new tools that are ecologically relevant and easy to use. We have developed a protocol based on the substrate-induced respiration of a river biofilm community, using the MicroResp™ technique, in a pollution-induced community tolerance approach. The results show that MicroResp™ can be used in bioassays to assess the toxicity toward biofilm communities of a wide range of metals (Cu, Zn, Cd, Ag, Ni, Fe, Co, Al and As). Moreover, a community-level physiological profile based on the mineralization of different carbon substrates was established. Finally, the utility of MicroResp™ was confirmed in an in-situ study showing gradient of tolerance to copper correlated to a contamination gradient of this metal in a small river. A modified MicroResp™ technique as a tool for measuring induced tolerance to heavy metals of a microbial biofilm community
Show more [+] Less [-][Macrophyte and water quality relations in Charente river near Angouleme (France)]
1995
Dutartre, A. (Centre National du Machinisme Agricole du Genie Rural des Eaux et des Forets, Gazinet (France). Division Qualite des Eaux) | Codhant, H. | Mary, N.
Detoxifying enzymes for exposure assessment of aquatic macrophytes
1995
Schrenk, C. (Institut fuer Oekologische Chemie, Oberschleissheim (Allemagne)) | Pflugmacher, S. | Schroeder, P. | Sandermann, H. | Steinberg, C. | Kettrup, A.
[The amphibian micronucleus test: a new biological tool for the detection of genotoxicity of fresh water]
1995
Ferrier, V. (Universite de Toulouse 3 (France). Centre de Biologie du Developpement) | Gauthier, L. | Zoll Moreux, C. | L'Haridon, J.
Contribution to the study of the macrophytic vegetation of the Semois river related to the global quality of the water and the aquatic environment
1995
Thoen, D. (Fondation Universitaire Luxembourgeoise, Arlon (Belgique)) | Roussel, L. | Nicolas, J.
[Bioindication of water quality by aquatic macrophytes: role of phosphorus [an example: a study of rivers in Alsace (France)]]
1995
Robach, F. (Institut de Botanique, Strasbourg (France). Laboratoire de Botanique et d'Ecologie Vegetale) | Merlin, S. | Rolland, T. | Tremolieres, M.
Nitrate reductase activity in aquatic plants as an indicator of ammoniacal nitrogen contamination
1995
Rolland, T. (Institut de Botanique, Strasbourg (France). Laboratoire de Botanique et d'Ecologie Vegetale) | Robach, F. | Tremolieres, M. | Dester, S.
Joint effects of copper sulphate and methidathion on rainbow trout (Oncorhynchus mykiss) EROD [ethoxy-resofurine-O-deethylase] and AChE [acetylcholinesterase] activities
1995
Flammarion, P. (Centre National du Machinisme Agricole du Genie Rural des Eaux et des Forets, Lyon (France). Laboratoire d'Ecotoxicologie) | Migeon, B. | Garric, J.
Mercury transfer (Hg) localization using bryophytic bioindicators as describers of the hydrological functioning (river - groundwater exchange) in the plain of the upper Rhine in Alsace (France) [principal component analysis, multiple correspondence factor analysis]
1995
Roeck, U. (Universite de Strasbourg 1, Illkirch Graffenstaden (France). Departement Hydrologie et Environnement) | Glasser, N. | Tremolieres, M.