خيارات البحث
النتائج 2341 - 2350 من 62,508
Neustonic microplastic and zooplankton in the North Western Mediterranean Sea النص الكامل
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.
اظهر المزيد [+] اقل [-]Biomarker responses in mussel (Mytilus edulis) and flounder (Platichthys flesus) in the Klaipeda-Butinge area (Baltic Sea). النص الكامل
2006
Barsiene, J. | Lehtonen, K. K. | Köhler, Angela | Broeg, Katja | Vuorinen, P. J. | Lang, T. | Pempkowiak, J. | Balk, L. | Syvokiene, J. | Dedonyte, V. | Rybakovas, A. | Repecka, R. | Vuontisjärvi, H. | Kopecka, J.
Indices for the assessment of environmental pollution of the Baltic Sea coasts: Integrated assessment of a multi-biomarker approach النص الكامل
2006
Broeg, Katja | Lehtonen, K. K.
Polysaccharide and xenobiotic metabolizing enzymes as biomarkers of contamination of Lymnaea palustris (Mollusca, Gastropoda) by atrazine and hexachlorobenzene in freshwater mesocosms النص الكامل
1995
Baturo, W. | Lagadic, Laurent | Caquet, Thierry
Photooxidation of carbonyl sulfide (SCO) by ozone studies of the reaction mechanisms in the gas phase and solid argon matrices النص الكامل
1991
Jaeger, K. | Weller, Rolf | Schrems, Otto
Etude des effets du dioxyde de soufre sur les vegetaux النص الكامل
1972
de Cormis, L. | Bonte, J. | Cantuel, J. | Dubreuil, J.
Clean water, sanitation and under-five children diarrhea incidence: Empirical evidence from the South Africa’s General Household Survey النص الكامل
2021
Omotayo, Abiodun Olusola | Olagunju, Kehinde Oluseyi | Omotoso, Abeeb Babatunde | Ogunniyi, Adebayo | Otekunrin, Olutosin Ademola | Daud, Adebola Saidat
Clean water, sanitation and under-five children diarrhea incidence: Empirical evidence from the South Africa’s General Household Survey النص الكامل
2021
Omotayo, Abiodun Olusola | Olagunju, Kehinde Oluseyi | Omotoso, Abeeb Babatunde | Ogunniyi, Adebayo | Otekunrin, Olutosin Ademola | Daud, Adebola Saidat
Clean water, sanitation and under-five children diarrhea incidence: Empirical evidence from the South Africa’s General Household Survey النص الكامل
2021
Omotayo, Abiodun Olusola; Olagunju, Kehinde Oluseyi; Omotoso, Abeeb Babatunde; Ogunniyi, Adebayo; Otekunrin, Olutosin Ademola; Daud, Adebola Saidat | https://orcid.org/0000-0001-9537-9743 Ogunniyi, Adebayo
PR | IFPRI3; ISI; DCA; 1 Fostering Climate-Resilient and Sustainable Food Supply; 2 Promoting Healthy Diets and Nutrition for all; G Cross-cutting gender theme | DSGD
اظهر المزيد [+] اقل [-]Clean water, sanitation and under-five children diarrhea incidence: Empirical evidence from the South Africa’s General Household Survey النص الكامل
2021
Omotayo, Abiodun Olusola | Olagunju, Kehinde Oluseyi | Omotoso, Abeeb Babatunde | Ogunniyi, Adebayo Isaiah | Otekunrin, Olutosin Ademola | Daud, Adebola Saidat
Sufficient supply of potable water, hygiene facilities, and sanitation are major factors enhancing healthy living. Using the dataset from the 2018 South Africa General Household Survey, this study employed the logistic regression model to examine the effects of accessibility to potable water and sanitation on the incidence of diarrhea among under-five children. The findings from the research reveal that the majority of children have access to safe drinking water, although a substantial percentage (32%) of the households had to pay for access. The results of the logistic regression model show that households with access to clean water, to improved toilet facilities, and to water within their residence are less likely to record incidence of diarrhea among under-five children. Moreso, the likelihood of reporting diarrhea among the children decreases with the age of children and the age of household heads. Therefore, to contribute to the designing policies targeted at reducing the incidence of diarrhea among children, this study emphasized that the availability and accessibility of clean water, water-storage facilities, and improved fecal discharge facilities among the South African households are key.
اظهر المزيد [+] اقل [-]Douglas-fir plantations impact stream and groundwater chemistry in western Europe: Insights from three case studies in France and Luxembourg النص الكامل
2023
Paul, Alexia | Hissler, Christophe | Florio, Alessandro | Didier, Serge | Pollier, Benoit | van der Heijden, Gregory | Dambrine, Etienne | Ranger, Jacques | Zeller, Bernd | Legout, Arnaud | Unité de recherche Biogéochimie des Ecosystèmes Forestiers (BEF) ; Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) | Luxembourg Institute of Science and Technology (LIST) | Laboratoire d'Ecologie Microbienne - UMR 5557 (LEM) ; Université Claude Bernard Lyon 1 (UCBL) ; Université de Lyon-Université de Lyon-Ecole Nationale Vétérinaire de Lyon (ENVL)-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)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) | Centre Alpin de Recherche sur les Réseaux Trophiques et Ecosystèmes Limniques (CARRTEL) ; Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Observatoire des Sciences de l'Univers de Grenoble (Fédération OSUG) | ANR-11-INBS-0001,ANAEE-FR,ANAEE-Services(2011) | ANR-11-LABX-0002,ARBRE,Recherches Avancées sur l'Arbre et les Ecosytèmes Forestiers(2011)
International audience | In rural areas, nitrate concentrations in surface waters most often originate from the leaching of excess N fertilizer in agricultural lands, whereas forested catchments often have good water quality. However, Douglas-fir plantations may induce nitrogen cycle unbalances which may lead to an excess of nitrate production in the soil. We hypothesize that the excess of production of nitrate in the soil and nitrate leaching to streamwater is greater in catchments planted with Douglas fir. We used paired catchments in both France and Luxembourg with different land covers (Douglas-fir, Spruce, Deciduous, Grassland and clearcut) which were monitored over a 3-5 year period in order to assess the effect of Douglas-fir plantations on the chemical composition of surface water. Nitrate concentration in the soil and groundwater were also monitored. The results show that nitrate concentrations in streams draining Douglas-fir catchments were two to ten times higher than in streams draining other land covers, but were similar to the clearcut catchment. Nitrate concentrations under Douglas-fir in groundwater (up to 50 mg L-1) and in the soil were also higher than under all other land covers. Soil nitrate concentration was related to stream nitrate concentration. This suggests that soil processes, through excessive nitrate production under Douglas-fir, are driving the nitrate concentration in the stream water and our hypothesis of a transfer of a fairly large proportion of this excessive production from the soil to the stream is supported. This study also shows that nitrate concentrations in surface and ground waters in rural areas could also originate from Douglas fir forested catchments. The impact of Douglas-fir is nevertheless reduced downstream through a dilution effect: mixing tree species at the catchment scale could thus be a solution to mitigate the effect of Douglas-fir on nitrate concentration in surface waters.
اظهر المزيد [+] اقل [-]Pollutant Pb burden in Mediterranean Centroscymnus coelolepis deep-sea sharks النص الكامل
2022
Véron, A. | Dell'Anno, A | Angelidis, M, O | Aloupi, M | Danovaro, R | Radakovitch, O. | Poirier, A | Heussner, S | 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) | Centre de recherche sur la dynamique du système Terre (GEOTOP) ; École Polytechnique de Montréal (EPM)-McGill University = Université McGill [Montréal, Canada]-Université de Montréal (UdeM)-Université du Québec en Abitibi-Témiscamingue (UQAT)-Université du Québec à Rimouski (UQAR)-Concordia University [Montreal]-Université du Québec à Montréal = University of Québec in Montréal (UQAM) | Polytechnic University of Marche / Università Politecnica delle Marche (UNIVPM) | University of the Aegean | Stazione Zoologica Anton Dohrn (SZN) | Laboratoire de recherche sur les transferts des radionucléides dans les écosystèmes aquatiques (IRSN/PSE-ENV/SRTE/LRTA) ; Service de recherche sur les transferts et les effets des radionucléides sur les écosystèmes (IRSN/PSE-ENV/SRTE) ; Institut de Radioprotection et de Sûreté Nucléaire (IRSN)-Institut de Radioprotection et de Sûreté Nucléaire (IRSN) | Centre de Formation et de Recherche sur les Environnements Méditérranéens (CEFREM) ; Université de Perpignan Via Domitia (UPVD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)
Pollutant Pb burden in Mediterranean Centroscymnus coelolepis deep-sea sharks النص الكامل
2022
Véron, A. | Dell'Anno, A | Angelidis, M, O | Aloupi, M | Danovaro, R | Radakovitch, O. | Poirier, A | Heussner, S | 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) | Centre de recherche sur la dynamique du système Terre (GEOTOP) ; École Polytechnique de Montréal (EPM)-McGill University = Université McGill [Montréal, Canada]-Université de Montréal (UdeM)-Université du Québec en Abitibi-Témiscamingue (UQAT)-Université du Québec à Rimouski (UQAR)-Concordia University [Montreal]-Université du Québec à Montréal = University of Québec in Montréal (UQAM) | Polytechnic University of Marche / Università Politecnica delle Marche (UNIVPM) | University of the Aegean | Stazione Zoologica Anton Dohrn (SZN) | Laboratoire de recherche sur les transferts des radionucléides dans les écosystèmes aquatiques (IRSN/PSE-ENV/SRTE/LRTA) ; Service de recherche sur les transferts et les effets des radionucléides sur les écosystèmes (IRSN/PSE-ENV/SRTE) ; Institut de Radioprotection et de Sûreté Nucléaire (IRSN)-Institut de Radioprotection et de Sûreté Nucléaire (IRSN) | Centre de Formation et de Recherche sur les Environnements Méditérranéens (CEFREM) ; Université de Perpignan Via Domitia (UPVD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)
International audience | We report lead (Pb) analyses in juvenile (n = 37; mean length = 24.7 ± 2.3 cm) and adult (n = 16; mean length = 52.3 ± 9.3 cm) Centroscymnus coelolepis Mediterranean deep-sea sharks that are compared to Pb content in bathy-demersal, pelagic and shallow coastal sharks. Median Pb concentrations of C. coelolepis muscle (0.009-0.056 wet ppm) and liver (0.023-0.061 wet ppm) are among the lowest encountered in shark records. Stable Pb isotope imprints in adult C. coelolepis muscles highlight that most of Pb in C. coelolepis is from human origin. Lead isotopes reveal the persistence of gasoline Pb emitted in the 1970s in low-turnover adult shark's muscle while associated liver imprints are in equilibrium with recent pollutant Pb signatures suggesting an efficient pollutant Pb turnover metabolism. The comparison of Pb distribution between adult and juvenile cohorts suggests the role of dietary exposure and possible maternal offloading of Pb during gestation, likely associated to vitellogenesis in this aplacental viviparous deep-sea shark.
اظهر المزيد [+] اقل [-]Pollutant Pb burden in Mediterranean Centroscymnus coelolepis deep-sea sharks النص الكامل
2022
Veron, A. | Dell'Anno, A. | Angelidis, M.O. | Aloupi, M. | Danovaro, R. | Radakovitch, O. | Poirier, A. | Heussner, S.
We report lead (Pb) analyses in juvenile (n = 37; mean length = 24.7 ± 2.3 cm) and adult (n = 16; mean length = 52.3 ± 9.3 cm) Centroscymnus coelolepis Mediterranean deep-sea sharks that are compared to Pb content in bathy-demersal, pelagic and shallow coastal sharks. Median Pb concentrations of C. coelolepis muscle (0.009–0.056 wet ppm) and liver (0.023–0.061 wet ppm) are among the lowest encountered in shark records. Stable Pb isotope imprints in adult C. coelolepis muscles highlight that most of Pb in C. coelolepis is from human origin. Lead isotopes reveal the persistence of gasoline Pb emitted in the 1970s in low-turnover adult shark's muscle while associated liver imprints are in equilibrium with recent pollutant Pb signatures suggesting an efficient pollutant Pb turnover metabolism. The comparison of Pb distribution between adult and juvenile cohorts suggests the role of dietary exposure and possible maternal offloading of Pb during gestation, likely associated to vitellogenesis in this aplacental viviparous deep-sea shark.
اظهر المزيد [+] اقل [-]Current status, spatial features, health risks, and potential driving factors of soil heavy metal pollution in China at province level النص الكامل
2020
Hu, Bifeng | Shao, Shuai | Ni, Hao | Fu, Zhiyi | Hu, Linshu | Zhou, Yin | Min, Xiaoxiao | She, Shufeng | Chen, Songchao | Huang, Mingxiang | Zhou, Lianqing | Li, Yan | Shi, Zhou | Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental and Resource Sciences ; Zhejiang University [Hangzhou, China] | Unité de Science du Sol (Orléans) (URSols) ; Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) | Université d'Orléans (UO) | Department of Earth System Science [Tsinghua] ; Tsinghua University [Beijing] (THU) | School of Earth Sciences, Zhejiang University (ZJU) | College of Environmental and Resource Sciences, Zhejiang University | Institute of Land Science and Property, School of Public Affairs ; Zhejiang University [Hangzhou, China] | InfoSol (InfoSol) ; Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) | Information Center of Ministry of Ecology and Environment | Institute of Agricultural Remote Sensing and Information Technology Application ; Zhejiang University [Hangzhou, China]
International audience | In this study we systematically reviewed 1203 research papers published between 2008 and 2018 in China and recorded related data on eight kinds of soil heavy metals (Cr, Pb, Cd, Hg, As, Cu, Zn, and Ni). Based on that, the pollution levels, ecological risk and health risk caused by soil heavy metals were evaluated and the pollution hot spots and potential driving factors of different heavy metals in different provinces were also identified. Results indicated accumulation of heavy metals in soils of most provinces in China compared with background values. Consistent with previous findings, the most prevalent polluted heavy metals were Cd and Hg. Polluted regions are mainly located in central, southern and southwestern China. Hunan, Guangxi, Yunnan, and Guangdong provinces were the most polluted provinces. For the potential health risk caused by heavy metals pollution, children are more likely confront with non-carcinogenic risk than adults and seniors. And children in Hunan and Guangxi province were experiencing relatively larger non-carcinogenic risk. In addition, children in part of provinces were undergoing potentially carcinogenic risks due to soil heavy metals exposure. Furthermore, in our study the 31 provinces in mainland China were divided into six subsets according to corresponding potential driving factors for heavy metal accumulation. Our study provide more comprehensive and updated information for contributing to better soil management, soil remediation, and soil contamination control in China.
اظهر المزيد [+] اقل [-]