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Nitrogen mass balance of a biotrickling filter treating NH3 emissions from pig facilities. Device control using electrical conductivity measurement Texto completo
2019
Dumont, Eric | Lagadec, Solène | Guingand, Nadine | Loyon, Laurence | Amrane, Abdeltif | Couvert, Annabelle
Impact of urbanisation (trends) on runoff behaviour of Pampulha watersheds (Brazil) Texto completo
2019
Seidl, Martin | Hadrich, Bilel | Palmier, Luiz | Petrucci, Guido | Nascimento, Nilo | Laboratoire Eau Environnement et Systèmes Urbains (LEESU) ; AgroParisTech-École nationale des ponts et chaussées (ENPC)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12) | Hydraulic and water resource engineering department (EHR) ; Universidade Federal de Minas Gerais = Federal University of Minas Gerais [Belo Horizonte, Brazil] (UFMG) | Finep Brazil | UFMG Brazil / ENPC France
International audience | The paper presents an analysis of runoff behaviour of four urban catchments between the municipalities of Belo Horizonte and Contagem in Brazil, linked to their land use. Two years of online measurement of flow data, combined with spatial analysis, was linked through runoff modelisation with EPA SWMM. The coefficients of Nash obtained varying between 0.75 and 0.87 demonstrated an adequate modelling approach. A 1-year rain series was applied to evaluate the runoff behaviour of actual land cover and that of 2002. The peak flows normalised to watershed surfaces revealed as the most urbanised (85%) watershed Ressaca with 178 L/ha/s, three times more runoff intensive than the least urbanised (41%) Mergulhão with 67 L/ha/s. Statistical analysis of land cover data and modelling results on watershed and sub-watershed level showed main correlations between hydrological parameters such as peak flow, average event flow and restitution time, but also between land cover and runoff coefficient. This approach gave a linear relation between runoff and green surface, with a runoff coefficient of 0.86 for fully urbanised zone and 0.43 for full “green” cover. Prospective simulation with actual urbanisation rates varying from 4 to 34 ha/year suggested an increase between 6 and 18% of the flows and a possible end of urbanisation within the next two to three decades. These findings should contribute to a better understanding of hydrological impact of Belo Horizonte urbanisation and to the restauration of its Lake Pampulha.
Mostrar más [+] Menos [-]Biocide emissions from building materials during wet weather: identification of substances, mechanism of release and transfer to the aquatic environment Texto completo
2019
Paijens, Claudia | Bressy, Adèle | Frere, Bertrand | Moilleron, Régis | Laboratoire Eau Environnement et Systèmes Urbains (LEESU) ; AgroParisTech-École nationale des ponts et chaussées (ENPC)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12) | Laboratoire Central de la Préfecture de Police (LCPP) ; Préfecture de police de Paris | OPUR
International audience | Biocides are added to or applied on building materials to prevent microorganisms from growing on their surface or to treat them. They are leached into building runoff and contribute to diffuse contamination of receiving waters. This review aimed at summarizing the current state of knowledge concerning the impact of biocides from buildings on the aquatic environment. The objectives were (i) to assess the key parameters influencing the leaching of biocides and to quantify their emission from buildings; (ii) to determine the different pathways from urban sources into receiving waters; and (iii) to assess the associated environmental risk. Based on consumption data and leaching studies, a list of substances to monitor in receiving water was established. Literature review of their concentrations in the urban water cycle showed evidences of contamination and risk for aquatic life, which should put them into consideration for inclusion to European or international monitoring programs. However, some biocide concentration data in urban and receiving waters is still missing to fully assess their environmental risk, especially for isothiazolinones, iodopropynyl carbamate, zinc pyrithione and quaternary ammonium compounds, and little is known about their transformation products. Although some models supported by actual data were developed to extrapolate emissions on larger scales (watershed or city scales), they are not sufficient to prioritize the pathways of biocides from urban sources into receiving waters during both dry and wet weathers. Our review highlights the need to reduce emissions and limit their transfer into rivers, and reports several solutions to address these issues.
Mostrar más [+] Menos [-]Gastropod pedal mucus retains microplastics and promotes the uptake of particles by marine periwinkles Texto completo
2019
Gutow, Lars | Bartl, Kevin | Saborowski, Reinhard | Beermann, Jan
The rapid dissemination of microplastics in many habitats of the oceans has raised concerns about the consequences for marine biota and ecosystems. Many adverse effects of microplastics on marine invertebrates are consequences of ingestion. Accordingly, the identification of mechanisms that facilitate the uptake of microplastics is essential for the evaluation of possible implications for marine organisms and food webs. Gastropods produce mucus for locomotion. Gastropod pedal mucus naturally retains formerly suspended micro-organisms, such as bacteria, microalgae, and seaweed spores. The retained organisms are consumed by gastropods that forage on pedal mucus. Here, we investigated the potential of gastropod pedal mucus to retain suspended microplastic particles and make them available for ingestion by periwinkles that forage on the contaminated mucus. In laboratory experiments, mucus of the periwinkles Littorina littorea and Littorina obtusata efficiently retained microplastics. Retention of microplastics varied between mucus from conspecifics of different size but not between mucus from either species. The density of microplastics in mucus trails increased concomitantly with the experimental particle concentration but was independent of incubation time. Aging of mucus and, particularly, desiccation affected the retention of microplastics. Periwinkles ingested microplastics when foraging on the contaminated mucus. Our results reveal a functional link between biogenic accumulation of microplastics and their trophic transfer by marine benthic herbivores into marine food webs.
Mostrar más [+] Menos [-]Microbial Emission from an anaerobic digestion site Texto completo
2019
Bayle, Sandrine | Rocher, J. | Cadiere, Axelle
Today, the environmental awareness is leading to the recovery of the solid organic waste and the use of fossil fuels. Methanisation, or anaerobic digestion, is a solution. This process is the transformation of organic matter by bacteria in the absence of oxygen. It allows both the treatment of organic waste and provides two main products biogas and digestate. Digestate is an improved fertilizer that can be used by spreading or composting. Biogas can be used to produce heat or electricity. Biogas production is currently supported by governments of developed countries. In France, the number of installations is gradually increasing (Club Biogaz ATEE, 2011). However, waste used as raw material can potentially be rich in microorganisms. Currently, some questions arise about the potential spread of micro-organisms by this type of process. Among the among the dispersal pathways, the airborne mode of spread is often poorly explored. During the anaerobic process, a few phases seem to be able to cause the aerosolization of microorganisms, for example, the stock of raw materials or digestate handling. In this context, the EMAMET project was realised to provide data on atmospheric emissions from these processes (Bayle et al, 2016). The objectives of this study are to enumerate and describe the airborne microbial community on anaerobic digestor site caracterized by molecular approach. On a quarterly basis, over a one-year period, of the anaerobic digestion of waste water activated sludge has been monitored. For each campaign, four sampling locations have been investigated; the storage area for raw materials, the raw material preparation area, the digestion reactor and the phase separation zone of the digestate. A fifth simple, an outdoor control sampling point was also included.
Mostrar más [+] Menos [-]Nitrogen mass balance of a biotrickling filter treating NH3 emissions from pig facilities. Device control using electrical conductivity measurement Texto completo
2019
Dumont, Eric | Lagadec, Solène | Guingand, Nadine | Loyon, Laurence | Amrane, Abdeltif | Couvert, Annabelle | Institut Universitaire de Technologie - Nantes (IUT Nantes) ; Université de Nantes (UN) | Traitement Eau Air Métrologie (GEPEA-TEAM) ; Laboratoire de génie des procédés - environnement - agroalimentaire (GEPEA) ; Institut Universitaire de Technologie - Nantes (IUT Nantes) ; Université de Nantes (UN)-Université de Nantes (UN)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST) ; Université de Nantes (UN)-Université de Nantes (UN)-Institut Universitaire de Technologie Saint-Nazaire (IUT Saint-Nazaire) ; Université de Nantes (UN)-Ecole Polytechnique de l'Université de Nantes (EPUN) ; Université de Nantes (UN)-École nationale vétérinaire, agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS)-Centre National de la Recherche Scientifique (CNRS)-Université Bretagne Loire (UBL)-IMT Atlantique (IMT Atlantique) ; Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Institut Universitaire de Technologie - La Roche-sur-Yon (IUT La Roche-sur-Yon) ; Université de Nantes (UN)-Institut Universitaire de Technologie - Nantes (IUT Nantes) ; Université de Nantes (UN)-Université de Nantes (UN)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST) ; Université de Nantes (UN)-Université de Nantes (UN)-Institut Universitaire de Technologie Saint-Nazaire (IUT Saint-Nazaire) ; Université de Nantes (UN)-Ecole Polytechnique de l'Université de Nantes (EPUN) ; Université de Nantes (UN)-École nationale vétérinaire, agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS)-Centre National de la Recherche Scientifique (CNRS)-Université Bretagne Loire (UBL)-IMT Atlantique (IMT Atlantique) ; Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Institut Universitaire de Technologie - La Roche-sur-Yon (IUT La Roche-sur-Yon) ; Université de Nantes (UN) | Chambre Régionale d'Agriculture de Bretagne | Institut du Porc (IFIP) | Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) | Institut des Sciences Chimiques de Rennes (ISCR) ; Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes) ; Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS)
International audience
Mostrar más [+] Menos [-]Retrotransposon methylation and activity in wild fish (A. anguilla): A matter of size Texto completo
2019
Pierron, Fabien | Daffe, Guillemine | Lambert, Patrick | Couture, Patrice | Baudrimont, Magalie | Environnements et Paléoenvironnements OCéaniques (EPOC) ; École Pratique des Hautes Études (EPHE) ; Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Bordeaux (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) | Ecosystèmes aquatiques et changements globaux (UR EABX) ; Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) | Centre Eau Terre Environnement [Québec] (INRS - ETE) ; Institut National de la Recherche Scientifique [Québec] (INRS) | ANR-16-CE34-0008,TRACE,Effets transgénérationnels des polluants chez les poissons: l'épigénétique et son implication en écotoxicologie(2016)
Retrotransposon methylation and activity in wild fish (A. anguilla): A matter of size Texto completo
2019
Pierron, Fabien | Daffe, Guillemine | Lambert, Patrick | Couture, Patrice | Baudrimont, Magalie | Environnements et Paléoenvironnements OCéaniques (EPOC) ; École Pratique des Hautes Études (EPHE) ; Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Bordeaux (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) | Ecosystèmes aquatiques et changements globaux (UR EABX) ; Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) | Centre Eau Terre Environnement [Québec] (INRS - ETE) ; Institut National de la Recherche Scientifique [Québec] (INRS) | ANR-16-CE34-0008,TRACE,Effets transgénérationnels des polluants chez les poissons: l'épigénétique et son implication en écotoxicologie(2016)
[Departement_IRSTEA]Eaux [ADD1_IRSTEA]Systèmes aquatiques soumis à des pressions multiples | International audience | Understanding how organisms cope with global change is a major question in many fields of biology. Mainly, understanding the molecular mechanisms supporting rapid phenotypic changes of organisms in response to stress and linking stress-induced molecular events to adaptive or adverse outcomes at the individual or population levels remain a major challenge in evolutionary biology, ecology or ecotoxicology. In this view, the present study aimed to test (i) whether environmental factors, especially pollutants, can trigger changes in the activity of retrotransposons (RTs) in wild fish and (ii) if changes in RT DNA methylation or transcription levels can be linked to modifications at the individual level. RTs are genetic elements that have the ability to replicate and integrate elsewhere in the genome. Although RTs are mainly quiescent during normal development, they can be experimentally activated under life-threatening conditions, affecting the fitness of their host. Wild eels were collected in four sampling sites presenting differing levels of contamination. The methylation level and the transcriptional activity of two RTs and two genes involved in development and cell differentiation were analyzed in fish liver in addition to the determination of fish contaminants levels and diverse growth and morphometric indices. An up-regulation of RTs associated to lower methylation levels and lower growth indices were observed in highly contaminated fish. Our results suggest that RT activation in fish experiencing stress conditions could have both detrimental and beneficial implications, affecting fish growth but promoting resistance to environmental stressors such as pollutants. Retrotransposons could represent interesting environment-sensitive molecular markers allowing to link stress-induced molecular events to adverse outcomes at higher levels.
Mostrar más [+] Menos [-]Retrotransposon methylation and activity in wild fish (A. anguilla): A matter of size Texto completo
2019
Pierron, Fabien | Daffe, Guillemine | Lambert, Patrick | Couture, Patrice | Baudrimont, Magalie
Understanding how organisms cope with global change is a major question in many fields of biology. Mainly, understanding the molecular mechanisms supporting rapid phenotypic changes of organisms in response to stress and linking stress-induced molecular events to adaptive or adverse outcomes at the individual or population levels remain a major challenge in evolutionary biology, ecology or ecotoxicology. In this view, the present study aimed to test (i) whether environmental factors, especially pollutants, can trigger changes in the activity of retrotransposons (RTs) in wild fish and (ii) if changes in RT DNA methylation or transcription levels can be linked to modifications at the individual level. RTs are genetic elements that have the ability to replicate and integrate elsewhere in the genome. Although RTs are mainly quiescent during normal development, they can be experimentally activated under life-threatening conditions, affecting the fitness of their host. Wild eels were collected in four sampling sites presenting differing levels of contamination. The methylation level and the transcriptional activity of two RTs and two genes involved in development and cell differentiation were analyzed in fish liver in addition to the determination of fish contaminants levels and diverse growth and morphometric indices. An up-regulation of RTs associated to lower methylation levels and lower growth indices were observed in highly contaminated fish. Our results suggest that RT activation in fish experiencing stress conditions could have both detrimental and beneficial implications, affecting fish growth but promoting resistance to environmental stressors such as pollutants.
Mostrar más [+] Menos [-]Threats Underestimated in Freshwater Plastic Pollution: Mini-Review Texto completo
2019
Blettler, Martín | Wantzen, Karl, M | Cités, Territoires, Environnement et Sociétés (CITERES) ; Université de Tours (UT)-Centre National de la Recherche Scientifique (CNRS) | LE STUDIUM Loire Valley Institute for Advanced Studies (LE STUDIUM) ; Bureau de Recherches Géologiques et Minières (BRGM)-Institut National de la Recherche Agronomique (INRA)-Centre national du machinisme agricole, du génie rural, des eaux et forêts (CEMAGREF)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de recherche pour le développement [IRD] : UR-Centre National de la Recherche Scientifique (CNRS) | This research was partly supported by LE STUDIUM - Institute for Advanced Studies, Loire Valley, Orléans, France
This is the post-print version of the following article: "Threats Underestimated in Freshwater Plastic Pollution: Mini-Review", which has been published in final form at https://link.springer.com/article/10.1007/s11270-019-4220-z | International audience | Plastic pollution is one of the most acute environmental topics of our time. While there is a great scientific effort to tackle this problem, it has not always been well-coordinated or properly targeted. In this short review we call for scientists to get involved in three crucial topics (threats) underestimated-or ignored-in freshwater systems: i) plastic-species entanglement, ii) plastic as nesting material and iii) macroplastic debris coming from mismanaged household solid waste. Reducing the knowledge gaps between marine and freshwater environments will be crucial to solute the plastic pollution problem effectively and globally. Therefore, we make a plea here to reinforce research activities on these three issues in freshwater environments worldwide.
Mostrar más [+] Menos [-]Biochemical impacts in adult and juvenile farmed European seabass and gilthead seabream from semi-intensive aquaculture of southern European estuarine systems Texto completo
2019
Rocha, C.P. | Cabral, Henrique | Nunes, Claudia, Ana | Coimbra, M.A. | Gonçalves, F.J.M. | Marques, J.C. | Gonçalves, A.M.M. | Universidade de Lisboa = University of Lisbon = Université de Lisbonne (ULISBOA) | Ecosystèmes aquatiques et changements globaux (UR EABX) ; Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) | UNIVERSIDADE DE AVEIRO QOPNA LAQV AVEIRO PRT ; Partenaires IRSTEA ; Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) | UNIVERSIDADE DE COIMBRA MARE COIMBRA PRT ; Partenaires IRSTEA ; Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)
[Departement_IRSTEA]Eaux [ADD1_IRSTEA]Dynamique et fonctionnement des écosystèmes | International audience | The nutritional value and developmental variations of cultured fish were assessed for European seabass and gilthead seabream specimens reared in semi-intensive aquaculture systems in two Portuguese estuaries. Quantification of total protein and of carbohydrate and fatty acid profiles was carried out to determine differences between the composition of the same species in two development stages reared in four distinct farms. A significant influence of the rearing site on the nutritional composition of the same species was found for adult European seabass regarding saturated, monounsaturated and highly unsaturated fatty acids contents, both between estuaries and within each estuary. In gilthead seabream, saturated, monounsaturated, polyunsaturated and highly unsaturated fatty acids content were also influenced by the rearing site. Carbohydrate analysis showed a significant influence of the rearing site on free sugar and polysaccharide content in fish of both species, and there was no influence on the species' protein content. Differences in fatty acid and carbohydrate content among juvenile and adult stages were found for all the groups studied. The present study supported the existing evidence that semi-intensive rearing systems are subjected to the variability of extrinsic factors in the rearing sites, influencing the nutritional value of the same species, namely regarding lipid and carbohydrate profiles, depending on the production site. From a consumer's perspective, such differences may come as a disadvantage of the rearing method, as it is expected for a product to provide equal nutritional properties and benefits regardless its origin, especially within the same country.
Mostrar más [+] Menos [-]Biomarkers as tools for monitoring within the Water Framework Directive context: concept, opinions and advancement of expertise | Les biomarqueurs comme outils de surveillance dans le contexte de la directive-cadre sur l'eau : concept, avis et avancement de l'expertise Texto completo
2019
Milinkovitch, T. | Geffard, Olivier | Geffard, Alain | Mouneyrac, Catherine | Chaumot, Arnaud | Xuereb, B. | Fisson, Cédric | Minier, Christophe | Auffret, Michel | Perceval, O. | Egea, E. | Sanchez, W. | Fondation de Coopération Scientifique ROVALTAIN | RiverLy - Fonctionnement des hydrosystèmes ; Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) | Université de Reims Champagne-Ardenne (URCA) | Stress Environnementaux et BIOsurveillance des milieux aquatiques (SEBIO) ; Institut National de l'Environnement Industriel et des Risques (INERIS)-Université de Reims Champagne-Ardenne (URCA)-Université Le Havre Normandie (ULH) ; Normandie Université (NU)-Normandie Université (NU)-SFR Condorcet ; Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS) | Centre National de la Recherche Scientifique (CNRS) | BIOlogie des populations, Stress, Santé, Environnement (BIOSSE) ; Université Catholique de l'Ouest (UCO) | Université Le Havre Normandie - UFR Sciences et Techniques (ULHN UFR ST) ; Université Le Havre Normandie (ULH) ; Normandie Université (NU)-Normandie Université (NU) | Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) ; Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) | Agence Française pour la Biodiversité (AFB) | French biodiversity agency (AFB)
Biomarkers as tools for monitoring within the Water Framework Directive context: concept, opinions and advancement of expertise | Les biomarqueurs comme outils de surveillance dans le contexte de la directive-cadre sur l'eau : concept, avis et avancement de l'expertise Texto completo
2019
Milinkovitch, T. | Geffard, Olivier | Geffard, Alain | Mouneyrac, Catherine | Chaumot, Arnaud | Xuereb, B. | Fisson, Cédric | Minier, Christophe | Auffret, Michel | Perceval, O. | Egea, E. | Sanchez, W. | Fondation de Coopération Scientifique ROVALTAIN | RiverLy - Fonctionnement des hydrosystèmes ; Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) | Université de Reims Champagne-Ardenne (URCA) | Stress Environnementaux et BIOsurveillance des milieux aquatiques (SEBIO) ; Institut National de l'Environnement Industriel et des Risques (INERIS)-Université de Reims Champagne-Ardenne (URCA)-Université Le Havre Normandie (ULH) ; Normandie Université (NU)-Normandie Université (NU)-SFR Condorcet ; Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS) | Centre National de la Recherche Scientifique (CNRS) | BIOlogie des populations, Stress, Santé, Environnement (BIOSSE) ; Université Catholique de l'Ouest (UCO) | Université Le Havre Normandie - UFR Sciences et Techniques (ULHN UFR ST) ; Université Le Havre Normandie (ULH) ; Normandie Université (NU)-Normandie Université (NU) | Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) ; Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) | Agence Française pour la Biodiversité (AFB) | French biodiversity agency (AFB)
[Departement_IRSTEA]Eaux [TR1_IRSTEA]BELCA [ADD1_IRSTEA]Systèmes aquatiques soumis à des pressions multiples - Trend Editorial | International audience | TheWater Framework Directive (WFD) currently supports chemical and ecological monitoring programmes in order to achieve the good water surface status. Although chemical and ecological assessments are necessary, they have some limitations. Chemical approaches focus on certain substances identified as priorities, but they do not take into account other potentially harmful substances and also ignore the hazards related to contaminant cocktails. On the other hand, while ecological approaches provide holistic information on the impairment of biological communities in ecosystems, they do not distinguish the role of contaminants in these alterations, and consequently do not allow the establishment of contaminant impact reduction plans. Consequently, ecotoxicologists suggest the use of effect-based tools such as biomarkers. Biomarkers highlight the effect of potentially harmful substances (or a cocktail), and their specificity towards the chemicalsmakes it possible to properly discriminate the role of toxicantswithin biological community impairments. Thus, the integration of such tools (besides existing chemical and ecological tools) in the WFD could considerably improve its biomonitoring strategy. The B n' B project (Biomarkers and Biodiversity) exposes key objectives that will allow to (i) establish an inventory of the biomarkers developed by French laboratories; (ii) determine their methodological advancement and limits and, on this basis, formulate recommendations for biomonitoring use and future research needs; (iii) discuss the biomarkers' ecological significance, specificity to contaminants and interpretation capacity; (iv) establish, in fine, a selection of valuable biomarkers to enter the WFD; and (iv) propose integrative tools to facilitate the decision-taking by stakeholders.
Mostrar más [+] Menos [-]Biomarkers as tools for monitoring within the Water Framework Directive context: concept, opinions and advancement of expertise Texto completo
2019
Milinkovitch, Thomas | Geffard, Olivier | Geffard, Alain | Mouneyrac, Catherine | Chaumot, Arnaud | Xuereb, Benoit | Fisson, Cédric | Minier, Christophe | Auffret, Michel | Perceval, Olivier | Egea, Emilie | Sanchez, Wilfried
The Water Framework Directive (WFD) currently supports chemical and ecological monitoring programmes in order to achieve the good water surface status. Although chemical and ecological assessments are necessary, they have some limitations. Chemical approaches focus on certain substances identified as priorities, but they do not take into account other potentially harmful substances and also ignore the hazards related to contaminant cocktails. On the other hand, while ecological approaches provide holistic information on the impairment of biological communities in ecosystems, they do not distinguish the role of contaminants in these alterations, and consequently do not allow the establishment of contaminant impact reduction plans. Consequently, ecotoxicologists suggest the use of effect-based tools such as biomarkers. Biomarkers highlight the effect of potentially harmful substances (or a cocktail), and their specificity towards the chemicals makes it possible to properly discriminate the role of toxicants within biological community impairments. Thus, the integration of such tools (besides existing chemical and ecological tools) in the WFD could considerably improve its biomonitoring strategy. The B n’ B project (Biomarkers and Biodiversity) exposes key objectives that will allow to (i) establish an inventory of the biomarkers developed by French laboratories; (ii) determine their methodological advancement and limits and, on this basis, formulate recommendations for biomonitoring use and future research needs; (iii) discuss the biomarkers’ ecological significance, specificity to contaminants and interpretation capacity; (iv) establish, in fine, a selection of valuable biomarkers to enter the WFD; and (iv) propose integrative tools to facilitate the decision-taking by stakeholders.
Mostrar más [+] Menos [-]Biomarkers as tools for monitoring within the Water Framework Directive context: concept, opinions and advancement of expertise Texto completo
2019
Milinkovitch, Thomas | Geffard, Olivier | Geffard, Alain | Mouneyrac, Catherine | Chaumot, Arnaud | Xuereb, Benoit | Fisson, Cedric | Minier, Christophe | Auffret, Michel | Perceval, Olivier | Egea, Emilie | Sanchez, Wilfried
The Water Framework Directive (WFD) currently supports chemical and ecological monitoring programmes in order to achieve the good water surface status. Although chemical and ecological assessments are necessary, they have some limitations. Chemical approaches focus on certain substances identified as priorities, but they do not take into account other potentially harmful substances and also ignore the hazards related to contaminant cocktails. On the other hand, while ecological approaches provide holistic information on the impairment of biological communities in ecosystems, they do not distinguish the role of contaminants in these alterations, and consequently do not allow the establishment of contaminant impact reduction plans. Consequently, ecotoxicologists suggest the use of effect-based tools such as biomarkers. Biomarkers highlight the effect of potentially harmful substances (or a cocktail), and their specificity towards the chemicals makes it possible to properly discriminate the role of toxicants within biological community impairments. Thus, the integration of such tools (besides existing chemical and ecological tools) in the WFD could considerably improve its biomonitoring strategy. The B n' B project (Biomarkers and Biodiversity) exposes key objectives that will allow to (i) establish an inventory of the biomarkers developed by French laboratories; (ii) determine their methodological advancement and limits and, on this basis, formulate recommendations for biomonitoring use and future research needs; (iii) discuss the biomarkers' ecological significance, specificity to contaminants and interpretation capacity; (iv) establish, in fine, a selection of valuable biomarkers to enter the WFD; and (iv) propose integrative tools to facilitate the decision-taking by stakeholders.
Mostrar más [+] Menos [-]