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Modelling of cadmium uptake by plant roots in agricultural soil: construction and sensitivity analysis of the model
2012
Zhongbin, Lin | Nguyen, Christophe | Schneider, Andre
Modelling of cadmium uptake by plant roots in agricultural soils. Exploration by steady-state analytical solution of numeric simulation results
2012
Schneider, Andre | Zhongbin, Lin | Nguyen, Christophe
Neustonic microplastic and zooplankton in the North Western Mediterranean Sea
2012
Collignon, Amandine | Hecq, Jean-Henri | Galgani, François | Voisin, Pierre | Collard, France | Goffart, Anne | Centre Interfacultaire de Recherches en Océanologie - MARE, STARESO
peer reviewed | Neustonic microplastic and zooplankton abundance was determined in the North Western Mediterranean Sea during a summer cruise between July 9th and August 6th 2010, with a break between July 22th and 25th due to a strong wind event. Ninety percent of the 40 stations contained microplastic particles (size 0.3-5 mm) of various compositions: e.g., filaments, polystyrene, thin plastic films. An average concentration of 0.116 particles/m² was observed. The highest abundances (> 0.36 particles/m²) were observed in the shelf stations. The neustonic plastic particles concentrations were 5 times higher before than after the strong wind event which increased the mixing and the vertical repartition of plastic particles in the upper layers of the water column. The values rise in the same order of magnitude than in the North Pacific Gyre. The average ratio between microplastics and mesozooplankton weights was 0.5 for the whole survey and might induce a potential confusion for zooplankton feeders.
Показать больше [+] Меньше [-]Emission factors and detailed chemical characterization of PM and VOCs from 4 in-use petrol and diesel passenger cars
2012
Polo, L. | Goriaux, M. | Jaffrezo, J.L. | Besombes, Jean-Luc | André, M. | Charron, A.
Planted discharge areas: analysis of their implementation in France. First results | ZRV: Analyse de leur développement en France. 1er résultats
2012
Boutin, Catherine | Prost Boucle, S.
In France, the number of PDA quickly increases in order to better protect receiving surface water bodies. Setting up design rules and maintenance guidelines is now urgent. | En France, l'installation de ZRV en vue de protéger davantage le milieu récepteur de surface est désormais fréquente. L'élaboration de règles de dimensionnement et de maintenance est désormais urgente.
Показать больше [+] Меньше [-]Contrasting levels of heavy metals in the feathers of urban pigeons from close habitats suggest limited movements at a restricted scale
2012
Frantz, Adrien | Pottier, Marie-Anne | Karimi, Battle | Corbel, Hélène | Aubry, Emmanuel | Haussy, Claudy | Gasparini, Julien | Castrec-Rouelle, Maryse | Biogéochimie et écologie des milieux continentaux (Bioemco) ; École normale supérieure - Paris (ENS-PSL) ; Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Université Pierre et Marie Curie - Paris 6 (UPMC)-AgroParisTech-Centre National de la Recherche Scientifique (CNRS) | Centre National de la Recherche Scientifique | Universite Pierre Marie Curie
International audience | Despite restrictions in emissions, heavy metals may remain a major environmental issue due to their numerous sources and their persistence. Here, we assessed current levels of 4 metals (Copper, Cadmium, Lead, Zinc) in the feathers of 91 feral pigeons (Columba livia) from 7 sites in the urbanized region of Paris. Elements were detected in all pigeons, indicating that metals persist in urbanized areas. The ratio between metal concentrations in the feathers vs. in the environment calculated using data from other studies was 2-90 times higher for cadmium than for other metals, underlying its ecological importance. Concentrations in the feathers depended on locality, suggesting that pigeons remain in local habitats at this restricted scale, as expected from previous observations. Overall, our study suggests that urban feral pigeons may represent a good model system for metal biomonitoring. (c) 2012 Elsevier Ltd. All rights reserved.
Показать больше [+] Меньше [-]Toxicokinetic of benzo[a]pyrene and fipronil in female green frogs (Pelophylax kl. esculentus)
2012
Reynaud, Stéphane | Worms, Isabelle A.M. | Veyrenc, Sylvie | Portier, Julien | Maitre, Anne | Miaud, Claude | Raveton, Muriel | Laboratoire d'Ecologie Alpine (LECA) ; Université Joseph Fourier - Grenoble 1 (UJF)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS) | École Pratique des Hautes Études (EPHE) ; Université Paris sciences et lettres (PSL) | Centre Hospitalier Universitaire [Grenoble] (CHU) | EPSP ; Techniques de l'Ingénierie Médicale et de la Complexité - Informatique, Mathématiques et Applications, Grenoble - UMR 5525 (TIMC-IMAG) ; Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS)-CHU Grenoble | Centre d’Ecologie Fonctionnelle et Evolutive (CEFE) ; Université Paul-Valéry - Montpellier 3 (UPVM)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-École Pratique des Hautes Études (EPHE) ; Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud])-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)
International audience
Показать больше [+] Меньше [-]Updated stomatal flux and flux-effect models for wheat for quantifying effects of ozone on grain yield, grain mass and protein yield
2012
Grünhage, Ludger, L. | Pleijel, Hakan, H. | Mills, Gina, G. | Bender, Jürgen, J. | Danielsson, Helena, H. | Lehmann, Yvonne, Y. | Castell, Jean-François, J.-F. | Bethenod, Olivier, O. | Department of Plant Ecology ; Justus-Liebig-Universität Gießen = Justus Liebig University (JLU) | Department of Plant and Environmental Sciences ; Göteborgs Universitet = University of Gothenburg (GU) | Centre for Ecology and Hydrology [Bangor] (CEH) ; Natural Environment Research Council (NERC) | Institute of Biodiversity ; Johann Heinrich von Thünen-Institut = Thünen Institute | Environnement et Grandes Cultures (EGC) ; Institut National de la Recherche Agronomique (INRA)-AgroParisTech | Swedish Environment Protection Agency; Defra [AQ0810, AQ0816, AQ0601]; LRTAP Convention; NERC; French National Research Agency, ANR
Field measurements and open-top chamber experiments using nine current European winter wheat cultivars provided a data set that was used to revise and improve the parameterisation of a stomatal conductance model for wheat, including a revised value for maximum stomatal conductance and new functions for phenology and soil moisture. For the calculation of stomatal conductance for ozone a diffusivity ratio between O(3) and H(2)O in air of 0.663 was applied, based on a critical review of the literature. By applying the improved parameterisation for stomatal conductance, new flux-effect relationships for grain yield, grain mass and protein yield were developed for use in ozone risk assessments including effects on food security. An example of application of the flux model at the local scale in Germany shows that negative effects of ozone on wheat grain yield were likely each year and on protein yield in most years since the mid 1980s.
Показать больше [+] Меньше [-]Relationships between POPs and baseline corticosterone levels in black-legged kittiwakes (Rissa tridactyla) across their breeding cycle.
2012
Nordstad, T. | Moe, B. | Bustnes, J.O. | Bech, C. | Chastel, Olivier | Goutte, Aurélie | Sagerup, K. | Trouvé, Colette | Herzke, D. | Gabrielsen, Geir Wing | Norwegian Polar Institute | Department of biology (Faculty of Science and Technology) ; Norwegian University of Science and Technology [Trondheim] (NTNU) ; Norwegian University of Science and Technology (NTNU)-Norwegian University of Science and Technology (NTNU) | Division of Arctic Ecology (NINA) ; Norwegian Institute for Nature Research (NINA) | Centre d'Études Biologiques de Chizé (CEBC) ; Institut National de la Recherche Agronomique (INRA)-Centre National de la Recherche Scientifique (CNRS) | Norwegian Institute for Air Research (NILU) | Norvegian Polar Research Institute (NPRI) ; Norwegian Polar Institute
International audience | Chronic exposure to persistent organic pollutants (POPs) in wildlife might alter the response to environmental changes through interference with the regulation of stress hormones. Here, we examined the relationship between blood concentrations of several POPs and baseline plasma corticosterone levels in the black-legged kittiwake (Rissa tridactyla) during three distinct periods in the breeding season. The concentrations of POPs and corticosterone increased, whereas body mass decreased progressively from the pre-laying period to the incubation and the chick rearing period. ∑PCB (polychlorinated biphenyls) correlated positively with the baseline corticosterone levels during the pre-laying period, which might suggest that PCBs affect the regulation of corticosterone. However, this relationship was not found during the incubation or the chick rearing period. Possible explanations are discussed with emphasis on how total stress/allostatic load is handled during different periods and conditions.
Показать больше [+] Меньше [-]Contrasting levels of heavy metals in the feathers of urban pigeons from close habitats suggest limited movements at a restricted scale
2012
Frantz, Adrien | Pottier, Marie-Anne | Karimi, Battle | Corbel, Hélène | Aubry, Emmanuel | Haussy, Claudy | Gasparini, Julien | Castrec-Rouelle, Maryse | Biogéochimie et écologie des milieux continentaux (Bioemco) ; École normale supérieure - Paris (ENS-PSL) ; Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Université Pierre et Marie Curie - Paris 6 (UPMC)-AgroParisTech-Centre National de la Recherche Scientifique (CNRS) | Centre National de la Recherche Scientifique | Universite Pierre Marie Curie
International audience | Despite restrictions in emissions, heavy metals may remain a major environmental issue due to their numerous sources and their persistence. Here, we assessed current levels of 4 metals (Copper, Cadmium, Lead, Zinc) in the feathers of 91 feral pigeons (Columba livia) from 7 sites in the urbanized region of Paris. Elements were detected in all pigeons, indicating that metals persist in urbanized areas. The ratio between metal concentrations in the feathers vs. in the environment calculated using data from other studies was 2-90 times higher for cadmium than for other metals, underlying its ecological importance. Concentrations in the feathers depended on locality, suggesting that pigeons remain in local habitats at this restricted scale, as expected from previous observations. Overall, our study suggests that urban feral pigeons may represent a good model system for metal biomonitoring. (c) 2012 Elsevier Ltd. All rights reserved.
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