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101.
Amelène El-Mufleh Béatrice Béchet Véronique Ruban Michel Legret Blandine Clozel Sylvie Barraud Carolina Gonzalez-Merchan Jean-Philippe Bedell Cécile Delolme 《Environmental science and pollution research international》2014,21(8):5329-5346
Urban stormwater infiltration basins are designed to hold runoff from impervious surfaces and allow the settling of sediments and associated pollutants. However concerns have been expressed about the environmental impacts that may be exerted by the trapped pollutants on groundwater, soils and ecosystems. In this context, sediment characterization represents a key issue for local authorities in terms of management strategies. During the last two decades, several studies were launched including either physical or chemical characterization of stormwater sediments but without real synthesis of data and methods used. Consequently, there is an important need for reviewing the current experimental techniques devoted to the physico-chemical characterization of sediment. The review is based on the outcomes of two experimental sites for which long term monitoring and data collection have been done: the Cheviré basin (near Nantes) and the Django Reinhardt basin (near Lyon). The authors summarize the studies dealing with bulk properties, pollutant contents, their potential mobility and speciation. This paper aims at promoting the significant progresses that were made through a multidisciplinary approach involving multi-scaled and combined experimental techniques. 相似文献
102.
103.
Marchand G Lalonde M Beaudet Y Boivin G Villeneuve S Pépin C 《Journal of environmental monitoring : JEM》2007,9(8):869-876
Cotton workers are recognized as being at risk of developing occupational lung diseases. Some researchers have identified endotoxins as being a potential etiologic agent for some of the respiratory problems. This study wants to document the concentration of endotoxins found in the ambient air of textile mills where cotton fibers are handled and to identify the processing steps where the highest endotoxins concentrations in the air were found and the one where the relative limit values (RLVs) are exceeded. The 4 mills studied process cotton fibers. All the air samples were analyzed using the chromogenic Limulus Amoebocytes lysate LAL method using a kinetic detection principle based on the IRSST's standard method. In this study, a large variability in the concentrations of endotoxins in the air was observed, depending on the mill, the processing step, and the time. Despite these variations, some processes can be identified as being major generators of endotoxins in the ambient air of the mills. The highest concentrations were measured in the weaving and drawing processes and reached 10,000 EU m(-3) of air. The opening, cleaning, carding, spinning and drawing processes are the other major endotoxins generating processes with concentrations from 24 to 8,700 EU m(-3) of air. The endotoxins concentrations exceeded the RLVs for 55% of the workstations in this project. This study demonstrated that endotoxins levels in the cotton industry are high and appropriate control measures are needed. 相似文献
104.
Célie Dupuy Claire Galland Alain Devaux Sylvie Bony Véronique Loizeau Morgane Danion Vianney Pichereau Michel Fournier Jean Laroche 《Environmental science and pollution research international》2014,21(24):13789-13803
A multibiomarker approach was developed to evaluate the juvenile European flounder responses to a complex mixture of 9 polycyclic aromatic hydrocarbons (PAHs) and 12 polychlorinated biphenyls (PCBs). Exposure was performed through contaminated food pellets displaying: (1) PAH and PCB levels similar to those detected in the heavily polluted Seine estuary, respectively in sediments and in flatfish and (2) ten times these concentrations. Several biomarkers of the immune system (e.g., lysozyme concentration and gene expression of complement component C3 and TNF-receptor), DNA damage (e.g., Comet assay), energetic metabolism (e.g.,?activity of cytochrome C oxidase), detoxification process (e.g., cytochrome P450 1A1 expression level: CYP1A1; betaine homocysteine methyl transferase expression level: BHMT) were investigated after 14 and 29 days of contamination, followed by a 14-days recovery period. After 29 days of contamination, the detoxification activity (CYP1A1 expression level) was positively correlated with DNA damages; the increase of the BHMT expression level could also be related to the detoxification process. Furthermore, after the recovery period, some biomarkers were still upregulated (i.e., CYP1A1 and BHMT expression levels). The immune system was significantly modulated by the chemical stress at the two concentration levels, and the lysozyme appeared to be the most sensitive marker of the mixture impact. 相似文献
105.
Soulard Christophe-Toussaint Valette Elodie Perrin Coline Abrantes Patricia Catarina Anthopoulou Theodosia Benjaballah Ouassila Bouchemal Salah Dugué Patrick Amrani Mohamed El Lardon Sylvie Marraccini Elisa Mousselin Guilhem Napoleone Claude Paoli Jean-Christophe 《Regional Environmental Change》2018,18(3):651-662
Regional Environmental Change - To address sustainability challenges of agro-ecosystems located in Mediterranean urban regions, this paper focuses on the multidisciplinary subject of urban... 相似文献
106.
Carole Bedos Marie-France Rousseau-Djabri Dominique Flura Sylvie Masson Enrique Barriuso Pierre Cellier 《Atmospheric environment (Oxford, England : 1994)》2002,36(39-40)
Pesticide volatilization to the atmosphere may be a major pathway of dissipation closely linked with environmental, physico-chemical and technical factors. Understanding the volatilization process requires systems that make it possible to control some of these factors. Wind tunnels meet to these criteria. The volatilization flux is determined from a mass balance, using the difference in atmospheric pesticide concentration between the entrance and the exit of the tunnel and the airflow rate. An experiment was carried out in June 2000 to study the repeatability of this technique. Volatilization of trifluralin was measured in three wind tunnels for 8 days with a sampling period varying between 3 h and 2 days. Pesticide concentration was determined by trapping by XAD-2 resin in a two-stage cartridge, solvent extraction and analysis by gas chromatography. Cumulated losses through volatilization reached 30% of the measured application dose after 8 days, with a variability of less than 20% between the three tunnels. Approximately 20% remained in the topsoil (0–2 cm), with a variability of 14% between the three tunnels. The decrease in the volatilization flux over time is coherent with the expected theoretical evolution for a volatile pesticide such as trifluralin and with previous experimental works. 相似文献
107.
Fritz Kleinschroth John R. Healey Sylvie Gourlet‐Fleury Frédéric Mortier Radu S. Stoica 《Conservation biology》2017,31(2):469-480
Forest degradation in the tropics is often associated with roads built for selective logging. The protection of intact forest landscapes (IFL) that are not accessible by roads is high on the biodiversity conservation agenda and a challenge for logging concessions certified by the Forest Stewardship Council (FSC). A frequently advocated conservation objective is to maximize the retention of roadless space, a concept that is based on distance to the nearest road from any point. We developed a novel use of the empty‐space function – a general statistical tool based on stochastic geometry and random sets theory – to calculate roadless space in a part of the Congo Basin where road networks have been expanding rapidly. We compared the temporal development of roadless space in certified and uncertified logging concessions inside and outside areas declared IFL in 2000. Inside IFLs, road‐network expansion led to a decrease in roadless space by more than half from 1999 to 2007. After 2007, loss leveled out in most areas to close to 0 due to an equilibrium between newly built roads and abandoned roads that became revegetated. However, concessions in IFL certified by FSC since around 2007 continuously lost roadless space and reached a level comparable to all other concessions. Only national parks remained mostly roadless. We recommend that forest‐management policies make the preservation of large connected forest areas a top priority by effectively monitoring – and limiting – the occupation of space by roads that are permanently accessible. 相似文献
108.
Sylvie Pouteau 《Journal of Agricultural and Environmental Ethics》2014,27(1):1-25
Concern for what we do to plants is pivotal for the field of environmental ethics but has scarcely been voiced. This paper examines how plant ethics first emerged from the development of plant science and yet also hit theoretical barriers in that domain. It elaborates on a case study prompted by a legal article on “the dignity of creatures” in the Swiss Constitution. Interestingly, the issue of plant dignity was interpreted as a personification or rather an “animalization of plants.” This sense of irony makes sense when one realizes that on scientific grounds the plant is a “second animal,” i.e., it differs from the animal in degree of life or some ethically-relevant criterion but not in nature. From the point of view of ethics however, plants should be defended for what they are by nature and not by comparison to external references: the ethical standing of plants cannot be indexed to animals. It is thus reckoned that to circumvent this odd fetishism, the plant ethics can only be adequately addressed by changing the theory of plant science. Common sense tells us this: plants and animals belong to radically different fields of perception and experience, a difference that is commonly captured by the notion of kingdom. In this paper we remind the ethical conversation that plants are actually incommensurable with animals because they are unsplit beings (having neither inside nor outside), i.e., they live as “non-topos” in an undivided, unlimited, non-centered state of being. It is concluded that the unique ontology of plants can only be addressed through a major change from object-thinking to process-thinking and a move from ego-centric to “peri-ego” ethics. 相似文献
109.
Hernandez-Ramirez G Brouder SM Ruark MD Turco RF 《Journal of environmental quality》2011,40(4):1229-1240
Artificial subsurface drainage in cropland creates pathways for nutrient movement into surface water; quantification of the relative impacts of common and theoretically improved management systems on these nutrient losses remains incomplete. This study was conducted to assess diverse management effects on long-term patterns (1998-2006) of NO, NH, and PO loads (). We monitored water flow and nutrient concentrations at subsurface drains in lysimeter plots planted to continuous corn ( L.) (CC), both phases of corn-soybean [ (L.) Merr.] rotations (corn, CS; soybean, SC), and restored prairie grass (PG). Corn plots were fertilized with preplant or sidedress urea-NHNO (UAN) or liquid swine manure injected in the fall (FM) or spring (SM). Restored PG reduced NO eightfold compared with fields receiving UAN (2.5 vs. 19.9 kg N ha yr; < 0.001), yet varying UAN application rates and timings did not affect NO across all CCUANs and CSUANs. The NO from CCFM (33.3 kg N ha yr) were substantially higher than for all other cropped fields including CCSM (average 19.8 kg N ha yr, < 0.001). With respect to NH and PO, only manured soils recorded high but episodic losses in certain years. Compared with the average of all other treatments, CCSM increased NH in the spring of 1999 (217 vs. 680 g N ha yr), while CCFM raised PO in the winter of 2005 (23 vs. 441 g P ha yr). Our results demonstrate that fall manuring increased nutrient losses in subsurface-drained cropland, and hence this practice should be redesigned for improvement or discouraged. 相似文献
110.
Poirier Larabie Sylvie Jutras Martin Leclair Grégoire St-Jean Isabelle Kleinert Christine Gagné François Gagnon Christian 《Environmental science and pollution research international》2022,29(30):45303-45313
Environmental Science and Pollution Research - Aquatic organisms are continuously exposed to emerging contaminants coming from urban effluents of wastewater treatment plants. The contamination of... 相似文献