Refine search
Results 1-10 of 22
Ozone et canicule: Quels impacts sur les cultures et les écosystèmes ?
2004
Castell, Jean-François
absent
Show more [+] Less [-]New critical levels for ozone effects on young trees based on AOT 40 and simulated leaf uptake of ozone
2004
Karlsson, Pererik | Uddling, Johan | Braun, Sabine | Broadmeadow, Mark | Elvira, Susana | Gimeno, Benjamin | Le Thiec, Didier, | Oksanen, Elina | Vandermeiren, Karine | Wilkinson, Matthew | Emberson, Lisa
Le premier "ozonetum" d'Europe au Centre de Recherches INRA de Nancy
2004
Garrec, Jean-Pierre,
Biomonitoring of air polluants with plants : considerations for the future
2004
De Temmerman, Ludwig | Bell, Nigel | Garrec, Jean-Pierre, | Klumpp, Andreas | Krause, Georg | Tonneijck, Alfred
Effect of cropping and tillage on the dissipation of PAH contamination in soil
2004
Saison, Carine | Perrin-Ganier, C. | Schiavon, Michel | Morel, J.L. | Laboratoire Sols et Environnement (LSE) ; Institut National de la Recherche Agronomique (INRA)-Université de Lorraine (UL)
International audience
Show more [+] Less [-]Long term monitoring of the efficiency of the phytostabilisation of metal-contamined soils
2004
Mench, Michel | Vangronsveld, J.
Morphology, chemistry and distribution of neoformed spherulites in agricultural land affected by metallurgical point-source pollution
2004
Leguédois, Sophie | van Oort, - | Jongmans, Toine | Chevallier, Pierre | Unité de recherche Science du Sol (USS) ; Institut National de la Recherche Agronomique (INRA) | Laboratory of Soil Science and Geology ; Alterra Wageningen University and Research Centre | Démantèlement de l'installation nucléaire de base 106 (DINB1) ; Centre National de la Recherche Scientifique (CNRS)
41 ref. doi:10.1016/j.envpol.2003.12.023 | International audience | Metal distribution patterns in superficial soil horizons of agricultural land affected by metallurgical point-source pollution were studied using optical and electron microscopy, synchrotron radiation and spectroscopy analyses. The site is located in northern France, at the center of a former entry lane to a bunker of World War II, temporarily paved with coarse industrial waste fragments and removed at the end of the war. Thin sections made from undisturbed soil samples from A and B horizons were studied. Optical microscopy revealed the occurrence of yellow micrometer-sized (Ap horizon) and red decamicrometer-sized spherulites (AB, B1g horizons) as well as distinct distribution patterns. The chemical composition of the spherulites was dominated by Fe, Mn, Zn, Pb, Ca, and P. Comparison of calculated Zn stocks, both in the groundmass and in spherulites, showed a quasi-exclusive Zn accumulation in these neoformed features. Their formation was related to several factors: (i) liberation of metal elements due to weathering of waste products, (ii) Ca and P supply from fertilizing practices, (iii) co-precipitation of metal elements and Ca and P in a porous soil environment, after slow exudation of a supersaturated soil solution in more confined mineral media.
Show more [+] Less [-]Metal availability and soil toxicity after repeated croppings of Thlaspi caerulescens in metal contaminated soils
2004
Keller, Catherine | Hammer, Daniel | Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE) ; Institut de Recherche pour le Développement (IRD)-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)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)
International audience
Show more [+] Less [-]Effects of environmental concentrations of atrazine on hemocyte density and phagocytic activity in the pond snail Lymnaea stagnalis (Gastropoda, Pulmonata)
2004
Russo, Jacqueline | Lagadic, Laurent | Ecosystèmes, biodiversité, évolution [Rennes] (ECOBIO) ; Université de Rennes (UR)-Institut Ecologie et Environnement - CNRS Ecologie et Environnement (INEE-CNRS) ; Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR) ; Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS) | Écologie et santé des écosystèmes (ESE) ; Institut National de la Recherche Agronomique (INRA)-AGROCAMPUS OUEST
Immunotoxicological effects of environmentally relevant concentrations (10, 23, 50, 100 μg/l) of atrazine were studied in Lymnaea stagnalis. Individual hemolymph sampling was performed at 0, 24, 48, 72, 96, 168, 336, 504 and 672 h during exposure. Every atrazine concentration induced a significant increase in the mean number of circulating hemocytes, without any concentration–response relation. A peak (1.6-fold increase) of hemocyte density was observed after 96 h of exposure. After 504 h, the number of hemocytes remained higher only in the snails exposed to the two highest concentrations. Granulocytes contributed most to the increase in hemocyte density in herbicide-exposed snails. Both short- (24 and 96 h) and long-term (504 h) exposures resulted in significant inhibition of hemocyte phagocytic activity upon E. coli. Over the long-term, phagocytosis recovered for the two lowest concentrations. After 504 h of exposure, every herbicide level resulted in a significant reduction of reactive oxygen species production in E. coli-stimulated hemocytes, which was not observed for short-term exposures.
Show more [+] Less [-]Impacts physiologiques de l'ozone sur les arbres
2004
Le Thiec, Didier, | Dizengremel, Pierre,