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| Registros recuperados: 32 | |
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| Bayed, Abdellatif; Quiniou, Francoise; Benrha, Ali; Guillou, Monique. |
| The condition of three intertidal Paracentrotus lividus populations, which inhabit an area between Rabat and Casablanca (Morocco) known by its high wave energy and its substantial anthropogenic disturbances were described. The growth rate of the juvenile sea urchins in this intertidal zone was low compared with more sheltered populations. A sharp increase in the gonad index was observed between January and March at the beginning of a period of algal production, and was concomitant with increases in seawater temperature and food consumption rate. This gonad index increase was followed by a single spawning period occurring between March and June, probably triggered by the phytoplankton bloom induced by upwelling conditions. Larval development in all three... |
| Tipo: Text |
Palavras-chave: Moroccan Atlantic; Growth; Population; Juvenile; Reproduction. |
| Ano: 2005 |
URL: http://archimer.ifremer.fr/doc/2005/publication-602.pdf |
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| Carteau, David; Vallee-rehel, Karine; Linossier, Isabelle; Quiniou, Francoise; Davy, Romain; Compere, Chantal; Delbury, Maxime; Fay, Fabienne. |
| The development of new antifouling coatings with respect to the marine environment is actually crucial. The aim of the present work is to concept an erodible paint formulated with biodegradable polyester as binders and which combines two modes of prevention: chemical and physical repelling of biofouling. This system is principally dedicated to disturb durable settlement of microfouling. Each component was chosen according to its specific properties: chlorhexidine is a bisdiguanide antiseptic with antibacterial activity, zinc peroxide is an inorganic precursor of high instable entities which react with seawater to create hydrogen peroxide, Tween 85 is a non ionic surfactant disturbing interactions between colonizing organisms and surface. Obtained results... |
| Tipo: Text |
Palavras-chave: Environmental coatings; Antifouling; Active substances; Microfouling. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00168/27923/27273.pdf |
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| Quiniou, Francoise; Toularastel, France; Le Fevre-lehoerff, Geneviève. |
| La surveillance d'un milieu peut se faire par la mesure des concentrations de "contaminants" dans l'eau, la matière vivante et le sédiment. C'est d'ailleurs ce qui est réalisé par le RNO sur le littoral français depuis 1974. Le dosage de ces contaminants donne une évaluation des niveaux de leurs concentrations dans les zones étudiées. Un effet de l'accumulation des contaminants dans la matière vivante peut aussi être mesuré grâce aux techniques biochimiques du type mesure de l'Acetylcholinestérase, EROD (GALGANI, 1987). La mesure des effets biologiques sur les organismes marins peut être réalisée par le biais des bioessais. Ces derniers permettent d'évaluer la qualité biologique d'un milieu : eau, sédiment ou rejets et émissaires divers. (Les réponses des... |
| Tipo: Text |
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| Ano: 1991 |
URL: http://archimer.ifremer.fr/doc/00132/24360/22360.pdf |
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| Pavillon, J-f; Quiniou, Francoise; Caisey, Xavier; Menasria, R.. |
| Les résultats présentés dans cette synthèse reprennent en partie ceux présentés séparément par les deux laboratoires marins : le laboratoire de Physiologie des êtres marins de l'Institut océanographique de Paris et l'antenne brestoise du Département Chimie des polluants de la Direction de l'Environnement Littoral de l'Ifremer, dans les rapports de juillet 99, juillet 2000 et octobre 2002 complétés par des résultats obtenus de juillet 2000 à juillet 2001. L'objectif principal du programme devait permettre de caractériser les effets de la matière organique sur "l'expression" (la biodisponibilité) de la toxicité de substances modèles ; trois Hydrocarbures Aromatiques Polycycliques (HAP) : le fluoranthène, le benzo(k)fluoranthène et le phénanthrène. En effet... |
| Tipo: Text |
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| Ano: 2003 |
URL: http://archimer.ifremer.fr/doc/00132/24288/22286.pdf |
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| Hourmant, Annick; Amara, Anis; Pouline, Patrick; Durand, Gael; Arzul, Genevieve; Quiniou, Francoise. |
| The herbicide bentazon (CASRN 25057-89-0) is extensively used in agriculture in Brittany (France) to replace atrazine. Bentazon is not readily adsorbed by soil and therefore it enters adjacent freshwater ecosystems, making its way to estuarine and marine waters areas. Information regarding its effects on marine ecosystems is scarce. Phytotoxicity assessments were conducted in the laboratory on the common diatom Chaetoceros gracilis using both the active ingredient and its formulated product (Basamais). The 3 day EC50 Using cell counts were, respectively, 150 mg/L and 60 mu g/L for bentazon active ingredient and for bentazon-formulated while cellular volume was increased. Although bentazon is known as a photosystem II inhibitor, it produced an increase of... |
| Tipo: Text |
Palavras-chave: Photosynthesis; Marine diatom; Growth; Chlorophylls; Chaetoceros gracilis; Carotenoids; Bentazon; ATP. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/2009/publication-6637.pdf |
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| Auby, Isabelle; Bocquene, Gilles; Quiniou, Francoise; Dreno, Jean-paul. |
| Within the framework of the study on cup oyster breeding in the Arcachon Basin (IFREMER's SURGIBA Programme, co-financed by Europe, the Regional Council of Aquitaine, the Regional Council of Gironde and the Arcachon Basin's inter-communal Syndicate), some pesticides have been researched in the main waterways and in the waters of several of the Basin's zones (Figure 1), during the summer months (June to September) from 1999 to 2003 inclusive (Auby and Maurer, 2004). The presence of a certain number of molecules, mainly from herbicides, was found in the waters and it has generally been possible to identify their source. Certain substances come from agricultural uses or park maintenance; others are from nautical sources (anti-fouling paint for protecting the... |
| Tipo: Text |
Palavras-chave: France; Arcachon basin; Hydrology; Chlorpyfiros; Chlorpyfiros; Insecticide; Weedkiller; Contamination; Marine environment. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/rapport-2398.pdf |
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| Alzieu, Claude; Bocquene, Gilles; Delesmont, Régis; Dhainaut-courtois, Nicole; Empis, Anne; Forget, Joelle; Glemarec, Michel; Pavillon, Jean-françois; Pruvot, Chrystèle; Quiniou, Francoise. |
| RAPPEL DES OBJECTIFS - Les objectifs visés par l'étude à l'origine du présent contrat consistaient à proposer et réaliser une démarche d'analyse prévisionnelle des risques environnementaux applicable aux boues de dragages des ports maritimes et à leur immersion. L'objectif final était de fournir aux services portuaires et aux Cellules de la Qualité des Eaux Littorales du Ministère de l'Aménagement du Territoire et de l'Environnement, une méthodologie de prévision des risques environnementaux des immersions des matériaux de dragage, facilitant ainsi leur gestion. |
| Tipo: Text |
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| Ano: 2003 |
URL: http://archimer.ifremer.fr/doc/00075/18613/16166.pdf |
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| Halgand, Daniel; Arzul, Genevieve; Cochard, Marie-laure; Erard-le Denn, Evelyne; Huet, Jerome; Le Claire, Jacques; Quiniou, Francoise. |
| Monitoring n°10, 2nd phase, of PENLY nuclear power - plant takes in account studies between March and september 1999. Hydrology, microbiology,phytoplankton, zooplankton and fishing are studied. |
| Tipo: Text |
Palavras-chave: Pelagos; Halieutique; Centrale nucléaire; Surveillance; Pelagos; Fishing; Nuclear power plant; Monitoring. |
| Ano: 2000 |
URL: http://archimer.ifremer.fr/doc/00080/19075/16670.pdf |
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| Burgeot, Thierry; Gagnaire, Beatrice; Renault, Tristan; Haure, Joel; Moraga, D.; David, E.; Boutet, L.; Sauriau, P.g.; Malet, Nathalie; Bouchet, V.; Lapegue, Sylvie; Bouilly, Karine; Le Moullac, Gilles; Arzul, Genevieve; Knoery, Joel; Quiniou, Francoise; Bacher, Cedric; Soletchnik, Patrick. |
| Les mortalités d'huîtres observées sur les côtes françaises apparaissent principalement à proximité du sédiment et pendant la gamétogenèse. Les interactions de facteurs environnementaux sur les écosystèmes conchylicoles comme la température, les apports des bassins versants et le compartiment sédimentaire illustrent un risque de mortalité lié à différentes sources de stress (Thème 1). Les variations de la qualité de la ressource trophique pendant l'effort de gamétogenèse favorise une baisse de l'énergie disponible (Thème 2) et contraint l'organisme fragilisé à fournir un effort d'adaptation (Fent 2004). L'apparition d'un stress pendant cette période sensible des huîtres pourrait constituer un facteur aggravant de mortalité. L'objectif de cette étude est... |
| Tipo: Text |
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| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/00304/41538/40746.pdf |
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| Bedier, Edouard; Knoery, Joel Radford; Fleury, Pierre-gildas; Quiniou, Francoise; Langlade, Aime; Cozic, Amandine; Delesmont, Edith; Delesmont, Régis; Caisey, Xavier; Lecureuil, Laetitia. |
| The phenomenon of summer mortalities of the Pacific cupped oyster Crassostrea gigas is observed in France since the beginning of the 90's. These mortalities are classically associated to younger stages and summer temperatures and occur during the reproduction period of the animal. The studies undertaken during the project Morest (2001-2005), showed that a number of biological and environmental risks, the interaction of them induces lethal stresses for animals in physiological weakness, exists in summer. Among these risks, that which is withstood by the oysters bred close to the sediment proved to be significant in intertidal areas. In Quiberon bay (southern Brittany, France), the breeding practices of sowing oysters in deep water is thus likely to expose... |
| Tipo: Text |
Palavras-chave: Huître; Crassostrea gigas; Mortalité; Sédiment; Composé réduit; Flux; Sulfure; Ammonium; Oyster; Crassostrea gigas; Mortality; Sediment; Reduced compound; Flux; Sulphide; Ammonia. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/00108/21956/19550.pdf |
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| Registros recuperados: 32 | |
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