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	Provedor de dados ArchiMer (10) Autor Malet, Nathalie (2) Androuin, Thibault (1) Aumond, Yoann (1) Bodin, Nathalie (1) Bruchon, Franck (1) Dessier, Aurélie (1) Ferraton, Franck (1) Haure, Joel (1) Heussner, S (1) Huet, Jerome (1) Kerherve, P (1) Massey, Jean-laurent (1) Minagawa, M (1) Monaco, A (1) Roos, David (1) Sauriau, Pierre-guy (1) Timmerman, Charles-andre (1) Mais... Palavra-chave Isotopes stables (10) Stable isotopes (5) Bassin de Marennes Oléron (2) Crassostrea gigas (2) Golfe du Lion (2) Microphytobenthos (2) Phytoplancton (2) Phytoplankton (2) Acides gras (1) Artisanal fishery (1) Bay of Brest (1) Bio-ecological indices (1) Bioaccumulation (1) Bioamplification (1) Biomagnification (1) Biotransformation (1) Bramidae (1) Cinétique (1) Communauté mésozooplanctonique (1) Compétition (1) Mais... Tipo do documento Text (10) Ano 2020 (1) 2018 (1) 2015 (3) 2007 (1) 2005 (2) 2003 (1) 2001 (1) Mais... País France (10) Idioma Francês (9) Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 10 Primeira ... 1 ... Última Ecologie trophique de l'espèce ingénieur Crepidula fornicata et implications pour le fonctionnement de son habitat ArchiMer Androuin, Thibault. The slipper limpet (Crepidula fornicata) is an invasive species of European coasts. Protandric hermaphrodite, this gregarious species forms individuals' stacks which accumulate in high density on bottom. For a long time considered as a detrimental invader, the slipper limpet is also an ecosystem engineer, modifying its habitat both physically and biologically. It is model to study how invasive and engineer species can structure and modify the ecosystem that they colonize. In this Ph.D. thesis, these effects have been examined through the trophic functioning of habitats colonized by the slipper limpet, with a special reference to the primary benthic production. Experimental stimulation of subtidal microphytobenthos (MPB) has been demonstrated by the... Tipo: Text Palavras-chave: Isotopes stables; Acides gras; Imagerie hyperspectrale; Microphytobenthos; Rade de Brest; Stable isotopes; Fatty acids; Hyperspectral imaging; Microphytobenthos; Bay of Brest. Ano: 2018 URL: https://archimer.ifremer.fr/doc/00679/79121/81610.pdf Origine et devenir de la matière organique au sein du micro-estuaire temporaire de Fiume Santu (L’Agriate, Haute-Corse) ArchiMer Massey, Jean-laurent. In relation with meteorological, hydrological and topographic characteristics, Corsica has a very large number of temporarily open/closed micro-estuaries. Agriates contains several of them, including the Fiume Santu’s temporarily micro-estuary. These ecosystems are specific because of their sporadic connection with the sea. The opening and closure depends on both the river flow and the presence of the Posidonia oceanica (L.) Delile “banquettes”. Characterization of the global functioning was based on a multiparameter approach (particulate matter and dissolved inorganic matter descriptors, carbon and nitrogen stable isotope, phytoplankton communities), in order to qualify and quantify the organic matter (OM), along an estuary – coastal zone gradient. The OM... Tipo: Text Palavras-chave: Corsica; Fiume Santu; Micro-estuaire temporaire; Matière organique; Isotopes stables; Nutriments; Phytoplancton; Corsica; Fiume Santu; Temporarily open/closed micro-estuary; Organic matter; Stable isotope; Nutrients; Phytoplankton. Ano: 2015 URL: http://archimer.ifremer.fr/doc/00276/38691/37188.pdf Cinétique d'acquisition du terroir Marennes-Oléron par l'huître creuse Crassostrea gigas : approche par les isotopes stables ArchiMer Malet, Nathalie; Sauriau, Pierre-guy; Haure, Joel. Japanese oysters previously reared in controlled conditions were replaced into the Marennes Oléron Bay on intertidal oyster parks during 2002 summertime. Kinetics of carbon and nitrogen isotope ratios was followed in 5 organs (digestive gland, gills, mantle, muscle and gonads). Results confirmed excepted significant differences in isotopie signatures between organs and revealed differences in the time required reaching equilibrium with the isotopie signatures of local food sources. Tipo: Text Palavras-chave: Cinétique; Isotopes stables; Bassin de Marennes Oléron; Crassostrea gigas. Ano: 2003 URL: http://archimer.ifremer.fr/doc/2003/acte-6526.pdf Écologie trophique des juvéniles de merlu (Merluccius merluccius) dans le golfe du Lion : Implications biologiques de la variabilité spatio-temporelle des ressources alimentaires exploitées dans les zones de nourricerie ArchiMer Ferraton, Franck. European hake (Merluccius merluccius) is a commercial and ecological important species in the Gulf of Lions. Juveniles are mainly located on the continental shelf, and abundance of smaller individuals (< 15 cm) is highest during spring in deeper areas principally. Juvenile hake (5 to 24 cm) density, relative condition factor, food resources and food web structure were investigated in four locations of the continental shelf (distributed with depth : shallow-deep, and distance from the Rhone river mouth : Rhone-Agde) during three springs (2002-2003-2004). Changes of food resources were identified with hake length, spatio-temporal variations were also observed for smaller juveniles (< 15 cm). Despite of hake prey diversity, the same organic source is at... Tipo: Text Palavras-chave: Zone de nourricerie; Réseau trophique; Isotopes stables; Facteur de condition relative; Ressources alimentaires; Juvéniles; Merluccius merluccius; Golfe du Lion. Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/these-4196.pdf Contamination des crustacés décapodes par les composes organohalogénés : étude détaille de la bioaccumulation des PCB chez l'araignée de mer Maja brachydactyla ArchiMer Bodin, Nathalie. Marine decapod crustaceans are macrobenthic opportunist species, of great commercial interest, and can accumulate pollutants. Worrying about consumers' safety, polychlorobiphenyls (PCBs), polybromodiphenyl Ethers (PBDEs) and dioxins (PCDD/Fs) were analyzed in four crustacean species from the coastal waters of Brittany and Normandy. As regards to regulations, the consumption of crustacean muscle doesn't raise any health problems. The second objective of this study was to evaluate the biological processes influencing PCB bioaccumulation in the spider crab Maja brachydactyla. From a quantitative point of view, organotropism, diet and age were the major factors acting on contamination. From a qualitative point of view, PCB fingerprints depended on sex, and to... Tipo: Text Palavras-chave: Food safety; Biotransformation; Biomagnification; Food webs; Stable isotopes; Decapod crustaceans; Bioaccumulation; Polychlorinated biphenyls; Organic contaminants; Sécurité sanitaire; Biotransformation; Bioamplification; Réseaux trophiques; Isotopes stables; Crustacés décapodes; Bioaccumulation; Contaminants organiques. Ano: 2005 URL: http://archimer.ifremer.fr/doc/2005/these-1149.pdf Stable isotopes (C-13/C-12 and N-15/N-14) in settling organic matter of the northwestern Mediterranean Sea: biogeochemical implications ArchiMer Kerherve, P; Minagawa, M; Heussner, S; Monaco, A. Within the framework of the High Frequency Flux (HFF) experiment (MATER programme), time-series sediment traps have been deployed for two months on the continental slope off Marseilles to measure downward particle fluxes at a high frequency sampling rate (two and six days). Combined isotopic analyses of carbon and nitrogen have been performed on selected samples. Both isotopic tracers have been used for the first time on organic material of the Mediterranean Sea (Gulf of Lions) to determine the main biological sources and to address the biogeochemical processes that affected this material. Settling particles were characterised by very low values of delta N-15 (near 0 parts per thousand) and delta C-13 (near -24.5 parts per thousand) that indicate the... Tipo: Text Palavras-chave: Isotopes stables; Traceurs isotopiques; Particules en sédimentation; Fixation d’azote; Golfe du Lion; Stable isotopes; Isotopic tracers; Settling particles; Nitrogen fixation; Gulf of Lions. Ano: 2001 URL: http://archimer.ifremer.fr/doc/00289/40019/38609.pdf Variations saisonnières et ontogéniques des interactions trophiques : Etude des poissons de Manche – mer du Nord à plusieurs niveaux d’organisation ArchiMer Timmerman, Charles-andre. Les interactions trophiques sont à la base de nombreux processus régissant la structure et le fonctionnement des écosystèmes. Cependant, de nombreuses sources de variations sont mal connues comme les variations saisonnières et ontogéniques. Ces variations ont été appréhendées à plusieurs niveaux d’organisation, l’assemblage, l’espèce et l’individu dans les écosystèmes de Manche orientale (MO) et de la baie sud de la mer du Nord (BSMDN). Ces variations ont été tout d’abord étudiées en analysant les isotopes stables du carbone (13C) et de l’azote (15N), qui fournissent des informations sur l’utilisation des ressources et de l’habitat dans un espace à deux dimensions. Ces analyses ont été réalisées sur plusieurs tissus en raison de leurs différents temps... Tipo: Text Palavras-chave: Isotopes stables; Niveaux d’organisation; Niche; Compétition; Couplage bentho-pélagique. Ano: 2020 URL: https://archimer.ifremer.fr/doc/00676/78816/81060.pdf Ecologie alimentaire de l'huitre Crassostrea gigas : dynamiques des compositions isotopiques naturelles ArchiMer Malet, Nathalie. Trophic transfers of particulate organic matter sources to the Pacific oyster Crassostrea gigas were investigated in the oyster farming bay of Marennes-Oléron for two years. Stable isotope ratios of carbon and nitrogen were used to trace the origin and fate of primary production and organic matter inputs into the bay, and to depict trophic transfers to oysters that were experimentally reared according to traditional methods. Characterizing particulate organic matter sources available for oysters utilized a combination of hydrobiological parameters and stable isotope ratios. Processes of food incorporation by oysters were described for five organs such as gills, digestive gland, mantle, muscle and gonads, and were interpreted taking into account... Tipo: Text Palavras-chave: Microphytobenthos; Phytoplankton; Organs; Trophic discrimination; Tissue turnovers; Particulate organic matter; Marennes Oléron Bay; Pertuis Charentais; Stable isotopes; Pacific oysters; Crassostrea gigas; Microphytobenthos; Phytoplancton; Hydrologie; Organes; Enrichissement trophique; Renouvellement tissulaire; Matière organique particulaire; Bassin de Marennes Oléron; Pertuis Charentais; Isotopes stables; Crassostrea gigas; Huître creuse. Ano: 2005 URL: http://archimer.ifremer.fr/doc/2005/these-2089.pdf Projet ANCRE-DMX2 : Indicateurs biologiques et écologiques pour une gestion durable des stocks de poissons DéMersauX profonds (100–700 m) d’intérêt halieutique à La Réunion ArchiMer Roos, David; Aumond, Yoann; Huet, Jerome; Bruchon, Franck. L'usage de la ligne à main mécanisée (moulinet électrique) s'est développé à La Réunion au cours des années 2000. Ce métier s’est développé à la suite d’une campagne de prospection des ressources halieutiques profondes (200-700m), menée conjointement par le CRPMEM et l’Ifremer en 2000. L’objectif de cette campagne par pêche au moulinet électrique visait à identifier de nouvelles ressources démersales à des fins de diversification pour la petite pêche artisanale côtière professionnelle réunionnaise. Ainsi, les premiers résultats de cette étude avaient mis en évidence l'existence de nouvelles espèces et des stocks encore peu exploités à l’époque. Leur exploitation par la pêche professionnelle mais aussi par la pêche plaisancière s’est dès lors développée... Tipo: Text Palavras-chave: Poissons démersaux; Pêche profonde; La Réunion; Pêche artisanale côtière; Indicateurs biologiques et écologiques; Stock halieutique; Lutjanidae; Bramidae; Epinephelidae; Squalidae; Ligne à main mécanisée; Isotopes stables; Contenus stomacaux; Génétique; Sclérochronologie; Demersal fish; Deepwater fishery; Reunion island; Artisanal fishery; Bio-ecological indices; Fish stock; Lutjanidae; Bramidae; Epinephelidae; Squalidae; Electric reel fishing gear; Isotopic analyses; Stomach contents; Genetic; Sclerochronology. Ano: 2015 URL: http://archimer.ifremer.fr/doc/00347/45812/45553.pdf Analyse du compartiment mésozooplanctonique et écologie alimentaire printanière de la sardine, Sardina pilchardus (Walbaum, 1782), et de l’anchois, Engraulis encrasicolus (Linné, 1758) adultes dans le Golfe de Gascogne ArchiMer Dessier, Aurélie. Dietary studies of marine species constitute an important key to improve the understanding of its biology and of its role in the ecosystem. Thus, prey-predator relationships structure and determine population dynamics and the trophic network at the ecosystem scale. Among the major study sites, the marine ecosystem is submitted to natural and anthropogenic constraints. In the North-Eastern part of the Atlantic Ocean, the Bay of Biscay is a large open area surrounded South by Spain and East by France. This bay is an historic place of intense fishery activities for which the main small pelagic species targeted are the pilchard, Sardina pilchardus and the anchovy, Engraulis encrasicolus. The aim of this work is to analyze the trophic ecology of these two small... Tipo: Text Palavras-chave: Petits poissons pélagiques; Traceurs écologiques; Isotopes stables; Parasites; Mercure; Communauté mésozooplanctonique; Qualité du régime alimentaire; Golfe de Chaînes; Zooplancton marin; Isotopes stables; Expérience d’alimentation; Poissons pélagiques -- Gascogne; Small pelagic fish; Ecological tracers; Stable isotopes; Parasites; Mercury; Mesozooplanktonic community; Diet quality; Feeding experiment. Ano: 2015 URL: http://archimer.ifremer.fr/doc/00353/46447/46197.pdf Registros recuperados: 10 Primeira ... 1 ... Última

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