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A comparative field study of growth, survival and reproduction of Crassostrea gigas, C-angulata and their hybrids ArchiMer
Soletchnik, Patrick; Huvet, Arnaud; Le Moine, Olivier; Razet, Daniel; Geairon, Philippe; Faury, Nicole; Goulletquer, Philippe; Boudry, Pierre.
This paper reports a comparative study of two cupped oysters, Crassostrea gigas and C angulata, and their hybrids reared in the Marennes-Oleron Sound (France) under usual farming conditions. The relative proficiency of these species was characterized in terms of growth, survival and reproduction, three major concerns for oyster farming. Four populations of each taxon were sampled (C gigas: Japan and France; C angulata: Taiwan and Spain) and used as progenitors to produce six different progenies under common hatchery and nursery conditions (transfer of 5 to 6 g of seed oysters at sea and rearing in bags for 2 years). Mortality profiles differed greatly among the progenies. The C angulata progeny of Taiwanese origin gave the poorest results, with 100%...
Tipo: Text Palavras-chave: Atlantic coast; Crassostrea gigas; Phenotypes; Hybrids; Oyster fanning.
Ano: 2002 URL: http://archimer.ifremer.fr/doc/2002/publication-560.pdf
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Absence de captage de Crassostrea gigas dans le bassin de Marennes-Oléron en 1981 : causes et conséquences ArchiMer
Berthome, Jean-paul; Deslous-paoli, Jean-marc; Heral, Maurice; Razet, Daniel; Garnier, Jacqueline.
The want of C. gigas spat-catching in the Marennes-oleron basin in 1981 can be due to various different reasons which are analysed here. Physico -chemical and trophic factors that can induce variations in the quality of gametogenesis, are successively in comparison with the year 1979 when reproduction was good. The biochemical evolution and a study of gonads slow a lack in maturation in 1981 even during the summer period. Late maturation of gonads bring about physiological consequences which induced mortality of cultivated oysters at the end of winter. A feeble recruit and a decrease of the cultivated stock have economic consequences which here sketched up.
Tipo: Text Palavras-chave: Larvae; Recrutment; Spat; Crassostrea gigas; Oysters; Larves; Recrutement; Captage; Crassostrea gigas; Huîtres.
Ano: 1982 URL: http://archimer.ifremer.fr/doc/1982/acte-2948.PDF
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Acquisition de donnée en continu sur la matière particulaire de la Baie estuarienne de Marennes-Oléron pendant le bloom printaniter planctonique : effet sur le taux de filtration de l'huître Crassostrea gigas ArchiMer
Heral, Maurice; Razet, Daniel; Prou, Jean.
The continuous obtention of different signals has been achieved for 9 days at a -fixed station during May 1988. The speed and direction of the currents have been monitoring concurrently with "in situ" turbidity and fluorescence in relation with the meteorological conditions. The concentration in particulate matter and the planktonic fluorescence fluctuated in direct relation with the water depth, the speed of the current and with the origin of the water masses. The oysters submitted to these large fluctuated conditions showed not constant filtration rate. The filtration calculated by turbidimeters (2 1 h-l g-1 dry weight) was three time less than the one achieved with fluorimeters (61 h-l g-1 dry weight). The filtration rate were fluctuated but not in...
Tipo: Text Palavras-chave: France; Marennes Oleron bay; Acquirring of continous data; Filtration; Crassostrea gigas; Particular matter; Marennes Oléron; Aquisition données; Courantologie; Filtration; Crassostrea gigas; Matière particulaire.
Ano: 1989 URL: http://archimer.ifremer.fr/doc/1989/acte-3021.pdf
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Affinage des huîtres creuses Crassostrea gigas en claires ostréicoles du Bassin de Marennes-Oléron : Etude des modifications de la Norme AFNOR-NF V 45 056 ArchiMer
Robert, Stephane; Goulletquer, Philippe; Soletchnik, Patrick; Geairon, Philippe; Le Moine, Olivier; Razet, Daniel; Faury, Nicole; Taillade, Sylvie.
Within its oyster quality project, the Marennes-Oleron Professional Organization (SRC) aims to improve the zootechnic rearing conditions in ponds for the Pacific cupped oyster C. gigas "fines de claires" and "speciales de claires", presently specified by the French norm AFNOR NF V45-056 (AFNOR, 1985). The proposed modifications concern a seasonal management of the oyster biomass per m2 , using 1 and 3kg/m2, during 2 weeks from April 1rst to October 31, and 3 weeks from November 1 to March 31, respectively. The Shellfish Aquaculture Laboratory of Poitou-Charentes (LCPC) carried out experiments to address the professional and decision-makers request for an assessment of those modifications on the final oyster quality compared to the current rearing...
Tipo: Text Palavras-chave: Huître creuse; Crassostrea gigas; Affinage; Claires ostréicoles; AFNOR NF V 45-056; Pacific Cupped oyster; Crassostrea gigas; Growth; Oyster ponds; AFNOR NF V 45-056.
Ano: 1998 URL: http://archimer.ifremer.fr/doc/00102/21325/18948.pdf
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Affinage des huîtres creuses Crassostrea gigas en claires ostréicoles du Bassin de Marennes-Oléron : étude des moficiations de la Norme AFNOR-NF V 45 056 ArchiMer
Robert, Stephane; Goulletquer, Philippe; Soletchnik, Patrick; Geairon, Philippe; Le Moine, Olivier; Razet, Daniel; Faury, Nicole; Taillade, Sylvie.
Dans le cadre de sa démarche « qualité », la SRC de Marennes-Oléron souhaite faire évoluer les normes zootechniques d'élevage de l' huître «fine de claires» et «spéciales de claires» défi nies actuellement par la norme AFNOR NF V 45-056 (AFNOR, 1985). Les modifications proposées concernent une gestion saisonnière de la biomasse par m2 en élevage, respectivement de 1 et 3kg/m2 pendant 2 semaines entre les 1 avril-31 0ctobre et 3 semaines, du 1 novembre au 3 1 mars. Le Laboratoire Conchylicole de Poitou-Charentes (LCPC) a engagé des expérimentations afin de répondre à la demande professionnelle et administrative d 'évaluer l'effet sur la qualité finale des huîtres des modifications d'élevage proposées, en comparaison avec la norme officielle AFNOR (1985)....
Tipo: Text Palavras-chave: Huître creuse; Crassostrea gigas; Affinage; Claires ostréicoles; AFNOR NF V 45-056.
Ano: 1998 URL: http://archimer.ifremer.fr/doc/00072/18366/15939.pdf
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Analyse de la capacité trophique de l'écosystème "claires ostréicoles" dans le cadre de l'affinage de l'huître creuse Crassostrea gigas (Bassin de Marennes-Oléron) ArchiMer
Soletchnik, Patrick; Razet, Daniel; Goulletquer, Philippe; Geairon, Philippe; Le Moine, Olivier; Faury, Nicole.
Bien que défini par la Norme AFNOR (NF V45-056), l'affinage des huîtres C. gigas en claires ostréicoles traditionnelles reste une pratique zootechnique non contrôlée. L'expérimentation 1994 a permis de tester 1) l'effet de la densité d'élevage (2 à 10 huîtres/m2) sur la croissance et la production de C. gigas, 2) la variabilité au sein de la claire de la croissance, et 3) d'évaluer les différentes sources de variabilité des paramètres physico-chimiques et trophiques de la colonne d'eau et de l'interface eau sédiment. Différentes échelles spatio-temporelles de ces variables ont été évaluées variant entre 2 périodes consécutives de emplissage du marais jusqu'au suivi en continu (pas de temps de 5rnn) des paramètres. Les modèles de calibration des signaux en...
Tipo: Text Palavras-chave: Crassostrea gigas; Production; Affinage; Claires ostréicoles; Modèle écosystème.
Ano: 1995 URL: http://archimer.ifremer.fr/doc/00072/18361/15933.pdf
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Anomalies de croissance de la coquille de Crassostrea gigas dans le bassin de Marennes -Oléron. Bilan de toris années d'observation ArchiMer
Heral, Maurice; Berthome, Jean-paul; Polanco Torres, E.; Alzieu, Claude; Deslous-paoli, Jean-marc; Razet, Daniel; Garnier, Jacqueline.
The appearance and changes of the oyster shell's gelatinous bags have been monitored since 1979. The increase in thickness that causes the growth into a "ball" can be explained by an overproduction of gel. The various environmental factors that can intervene in the secretion of gel are successively examined.
Tipo: Text Palavras-chave: Oysters; Shell; Crassostrea gigas; Huîtres; Coquille; Crassostrea gigas.
Ano: 1981 URL: http://archimer.ifremer.fr/doc/1981/acte-2943.pdf
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Approche de l'activité de prédation de l'huître creuse Crassostrea gigas par les bigorneaux perceurs Ocenebra erinacea et Ocenebra inornata. Régulation des populations de perceurs Ocenebra erinacea et Ocenebra inornata : survie vis-à-vis des températures négatives et action du brûlage sur des pontes naturelles ArchiMer
Robert, Stephane; Grangere, Karine; Amiot, Jean-baptiste; Le Moine, Olivier; Soletchnik, Patrick; Guilpain, Patrice; Seugnet, Jean-luc; Geairon, Philippe; Goulletquer, Philippe; Razet, Daniel; Faury, Nicole; Garcia-meunier, Pascale; Martel, C..
Parmi les problèmes qui handicapent la production du bassin, la surexploitation du milieu trophique est souvent mise en référence (Bacher 1989, Héral, 1991) de la même façon des mortalités importantes sont régulièrement enregistrées principalement en période estivale Lodato M.I., 1997, Goulettquer, 1998, Soletchnick, 1998, 2000. Depuis la fin des années 1990 la prédation par bigorneaux perceurs est un problème important régulièrement signalé par les professionnels, au point que la section régionale a organisé un ramassage collectif des perceurs en avril 2001 . Ce problème n' est pas nouveau, dans les années 30, la prédation par Ocenebra erinacea était enregistrée pour ses ravages sur les bancs d'élevage de La Rochelle, Bourgneuf ou Arcachon (Robert S., et...
Tipo: Text Palavras-chave: Bigorneaux perceurs; Ocenebra erinacea; Ocenebra inornata; Huître creuse; Crassostrea gigas; Prédation.
Ano: 2002 URL: http://archimer.ifremer.fr/doc/00077/18791/16367.pdf
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Aquaculture traditionnelle de l'huître creuse (Crassostrea gigas - Thunberg) sur le littoral français. Affinage automnal en bassins semi-fermés (claires ostréicoles) ArchiMer
Soletchnik, Patrick; Le Moine, Olivier; Goulletquer, Philippe; Geairon, Philippe; Razet, Daniel; Faury, Nicole; Fouche, Dominique; Robert, Stephane.
L'aquaculture des huîtres est une activité traditionnelle en France depuis le moyen âge. Sur la côte atlantique, dans le bassin de Marennes Oléron, la commercialisation annuelle de C. gigas atteint environ 50 000 tonnes. Cette région bénéficie d'une infrastructure de claires ostréicoles, anciens marais salants, où les huîtres sont affinées avant commercialisation. L'huître est un produit de consommation festif dont les 3/4 se commercialisent durant les fêtes de fin d'année. A l'heure actuelle les techniques d'affinage, visant à améliorer la qualité (goût, coloration, engraissement des huîtres), sont peu fiables. Malgré les aléas météorologiques de la saison automnale, des cultures de diatomées (Skeletonema costatum) sont réalisées avec succès en bassins...
Tipo: Text Palavras-chave: Claires ostréicoles; Affinage; Huître creuse; Crassostrea gigas; Marennes Oléron.
Ano: 1999 URL: http://archimer.ifremer.fr/doc/00199/31047/29464.pdf
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BABE : Comparaison des sites de Ronce et Baie de Veys, incidence sur la reproduction et les mortalités : Ecologie côtière, mortalités, croissance, environnement - Physiologie - Immunologie ArchiMer
Soletchnik, Patrick; Le Moine, Olivier; Faury, Nicole; Guilpain, Patrice; Geairon, Philippe; Razet, Daniel; Seugnet, Jean-luc; Robert, Stephane; Ropert, Michel; Simonne, Charlotte; Hugonnet, Virginie; Moal, Jeanne; Pouvreau, Stephane; Huvet, Arnaud; Samain, Jean-francois; Lambert, Christophe; Soudant, Philippe; Frouel, Stephane; Choquet, Gwenaelle; Delaporte, Maryse; Paillard, Christine.
Four laboratories are involved in this multidisciplinary study: the Conchological Laboratory of Normandie (LCN), the Invertebrates Physiology Laboratory (LPI), the Université Bretagne Occidentale (LEMAR IHP) and the Conchological Laboratory of Poitou-Charentes (LCPC). The part of the study which is presented here (thematics "Coastal ecology") was produced in collaboration with the LCN. The data on the Bay of Veys was collected by Michel Ropert. This study aims at observing the "sites" effect on mortality and on the general biology of the animal, as well as measuring some environmental elements (e.g. water temperature, etc.). The geographical sites are Gefosse in the Bay of Veys (East Cotentin) and the Ronce bank in the south of the Marennes Oléron Bay. The...
Tipo: Text Palavras-chave: Immunologie; Physiologie; Paramètres environnementaux; Croissance; Ecologie côtière; Baies des Veys Cotentin; Ronce Charente Maritime; Comparaison sites; Reproduction; Mortalités; Crassostrea gigas; Huîtres.
Ano: 2002 URL: http://archimer.ifremer.fr/doc/2002/acte-3405.pdf
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Bilan de l'année 1996 : Cultures d'huîtres en eaux profondes ; Suivi de l'activité physiologique de C. gigas sur le banc de Ronce (mortalités anormales sur le banc de Ronce) ; Valorisation des claires ostréicoles ArchiMer
Goulletquer, Philippe; Le Moine, Olivier; Soletchnik, Patrick; Razet, Daniel; Turpin, Vincent; Robert, Jean-michel; Gras, Paul; Faury, Nicole; Geairon, Philippe; Taillade, Sylvie; Lodato, Marie; Lagarde, Franck.
La contractualisation SRC/IFREMER-URAPC concernait en 1996 trois actions spécifiques : • Expertise pour les cultures d'huîtres en eaux profondes, • Suivi de l'activité physiologique sur le banc de Ronce, • Valorisation des claires ostréicoles - optimisation du processus d'affinage. Le premier thème n'a pu être abordé que via les différentes réunions préparatoires SRC Ré Centre Ouest, Marennes-Oléron et les commissions des cultures marines. Depuis l'accord de la CCM de La Rochelle en date du 11/04/1996, le dossier reste en attente d'un accord budgétaire des différents partenaires. Le second thème concerne le suivi de l'activité physiologique des huîtres creuses sur le banc ostréicole de Ronce-Perquis. La méthodologie est basée sur l'utilisation d'un...
Tipo: Text Palavras-chave: Ostréiculture; Elevage en eaux profondes; Crassostrea gigas; Physilogie; Mortalité; Claire ostréicole; Bassin de Marennes Oléron; Charente-Maritime.
Ano: 1997 URL: http://archimer.ifremer.fr/doc/00102/21316/18936.pdf
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Bilan des actions MOREST 2004 du Laboratoire Envrionnement et Ressources du Poitou-Charentes (LERPC) ArchiMer
Soletchnik, Patrick; Le Moine, Olivier; Geairon, Philippe; Faury, Nicole; Razet, Daniel; Robert, Stephane; Prou, Jean.
The objectives for 2004: - Continuation of the study of the "on-bottom/off-bottom" mortality south of the Marennes Oléron Bay with a study of acute stress (sequel to Dynamo & DynamoR studies) (WP 2.2.8). - Continuation of the laboratory analysis of the dynamoR 2003 samples (biological material) and data (WP 2.2.3). - Analysis of the data on the characterisation of summer mortality (WP 2.2.1) in relation to the environment. Through these tasks, the objectives are: (1) understanding the "on-bottom/off-bottom" mortality model of C. gigas in the Marennes Oléron Bay and underlining the environmental causes of summer mortality, (2) bringing a regional answer to this issue, (3) widening the study of the mortality / environment relationship to all the French...
Tipo: Text Palavras-chave: Ecosystèmes conchylicoles; Modélisation; Bassin de Marennes Oléron; MOREST; Mortalités; Crassostrea gigas; Huîtres.
Ano: 2004 URL: http://archimer.ifremer.fr/doc/2004/acte-3388.pdf
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Bilan énergétique de l'huître creuse (Crassostrea gigas) durant la période de forte croissance en mai en Baie de Marennes-Oléron (France) ArchiMer
Soletchnik, Patrick; Heral, Maurice; Razet, Daniel; Bougrier, Serge; Geairon, Philippe.
Ecophysiological study was conducted on the japanese oyster (Crassostrea gigas) reared in Marennes-Oléron bay (France), during May 1992. Most of the somatic growth of the oyster occured during that month. The measurements were achieved from a removable laboratory stated in Le Chapus for 3 days at different tide level (coefficient of 49, 57, and 88). The food conditions were monitored through a computer with a continuous record of the turbidity during aIl the tidal cycle. In spite of an important variation between the food conditions in mean seston load, from 13,5 to 54,6 mg/!, the available organic matter ranged from 3 to 4,9 mg/l. The rate of organic matter in the water ranged 22 % to 9 %. The organic selection efficiency was significantly higher for the...
Tipo: Text Palavras-chave: Energetic budget; Selection efficiency; Filtration; Crassostrea gigas; Budget énergétique; Sélection; Consommation; Crassostrea gigas.
Ano: 1993 URL: http://archimer.ifremer.fr/doc/1993/acte-3068.pdf
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Bilan énergétique de l'huître japonaise Crassostrea gigas en conditions expérimentales de laboratoire au cours du mois de septembre 1991 ArchiMer
Soletchnik, Patrick; Bougrier, Serge; Razet, Daniel; Geairon, Philippe; Prou, Jean; Heral, Maurice; Barille, Laurent.
L'étude ci dessous, réalisée chez Crassostrea gigas, a comme objectif de comparer l'effet de différents types d'aliments sur le bilan énergétique de cette espèce.
Tipo: Text Palavras-chave: Huître creuse; Crassostrea gigas; Bilan énergétique; Sources alimentaires; Biodépots; Tri pré-ingestif.
Ano: 1992 URL: http://archimer.ifremer.fr/doc/00100/21095/18720.pdf
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Caractérisation sur estran des performances de croissance, maturation et survie des deux-taxons d'huîtres creuses C. gigas et C. angulata, hybrides et "exotiques" ArchiMer
Soletchnik, Patrick; Huvet, Arnaud; Le Moine, Olivier; Razet, Daniel; Geairon, Philippe; Goulletquer, Philippe; Faury, Nicole.
This study presents the zootechnical performances in their natural habitat, the Marennes Oléron Bay, of two Crassostrea gigas and Crassostrea angulata taxons of European and Asian origin, as well as those of their "European" hybrids (6 studied strains). Growth performance seems to be a phenotypic characterisation linked with the maternal origin (c. gigas or C. angulata). The Asian "pure gigas" or "pure angulata" strains' growth performances differ more from those of their European "sisters" than the European taxons with their hybrids. The C. angulata strain, of Taiwanese origin, does not survive the second culture week in the Marennes Oléron Bay. The C. angulata strain seems to "carry" a strong mortality potential. After 6 months of off-bottom culture, the...
Tipo: Text Palavras-chave: Survie; Performance croissance; Hybrides; Zootechnie; Crassostrea angulata; Crassostrea gigas; Huîtres.
Ano: 2001 URL: http://archimer.ifremer.fr/doc/2001/acte-3382.pdf
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Caracteristiques saisonnieres de l'hydrobiologie du complexe estuariende Marennes-Oleron (France). ArchiMer
Heral, Maurice; Razet, Daniel; Deslous-paoli, Jean-marc; Berthome, Jean-paul; Garnier, J..
Four seasonal compaigns providing a sampling of 15 stations each followed during half a tide cycle, i.e. 120 water samples permit the definition of the main hydrobiological features of Marennes-Oleron Bay: salinity and turbidity, phytoplanktonic biomasses, ATP concentrations. The authors suggest that a new way of adapted sampling to their objectives, will work out in the future by sampling during tidal cycles but as frequently as possible.
Tipo: Text Palavras-chave: Seasonal variations; Salinity; ATP; Estuaries; Turbidity; Hydrobiology; Salinity; Phytoplankton; Estuaries; Biomass; Hydrobiology; Physicochemical properties; Phytoplankton; Environmental conditions; Biomass.
Ano: 1982 URL: http://archimer.ifremer.fr/doc/1982/publication-1854.pdf
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Cartographie du marais salé de Charente Maritime ArchiMer
Le Moine, Olivier; Geairon, Philippe; Razet, Daniel.
Our objectives can be broken down into two main axes: -Mapping of the swamp and of its use - Thematic mapping of the trophic availability of the hydraulic units. Data acquisition has been continued throughout the year 2003 To do so, a number of technical adjustments have been necessary. In this final phase of the contract, a new point of view has been tackled: that of modelisation. Indeed, considering the complexity of the calculations used, the evaluation of the trophic availability in the different hydraulic units requires the use of such techniques and software. Spatial analyses have been continued, and a number of models aimed at simplifying measurement acquisitions have been created.
Tipo: Text Palavras-chave: Modélisation; Traitement spatiaux; Cartographie; Charente Maritime; Zone littorale; Marais.
Ano: 2004 URL: http://archimer.ifremer.fr/doc/2004/rapport-6377.PDF
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Characteristics of the particulate matter during the Mai '92 experiment. Effect on ecophysiological functions on mussel and oyster populations. ArchiMer
Prou, Jean; Soletchnik, Patrick; Heral, Maurice; Geairon, Philippe; Razet, Daniel; Bougrier, Serge.
In order to complete the knowledge of seasonal variability of ecophysiological parameters, in situ experiment was conducted in May 1992 at the sampling site "Le Chapus". As in the previous experiments (May '91, October '91 and February '92), the race-way technique was used to study ecophysiological behavior of oyster and mussel populations submitted to natural variability.
Tipo: Text Palavras-chave: Pacific cupped oyster; Crassotrea gigas; Particulate matter; Pigments; Particle size distribution; Retention; Filtration; Mytilus edulis.
Ano: 1992 URL: http://archimer.ifremer.fr/doc/00100/21091/18715.pdf
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Composition de la matière organique particulaire dans les eaux du bassin de Marennes-Oléron : apport énergétique pour la nutrition de l'huître ArchiMer
Heral, Maurice; Razet, Daniel; Maestrini, Serge; Garnier, Jacqueline.
A twice monthly study shows that the major amount of organic material is from detrtic origin, and is brought in winter, when valeus of mineral seston are very high. In the sping time, phytoplancton blooms, do not make up for lack of detritic material where as in the summer, oceanic phytoplancton is composed of important amounts of carbohydrates. Available food is defined as sum of protids, lipids and carbohydrates and mesured in energetic therms. This allows to foretell the amount of food that molluscs ar likely to assimilate.
Tipo: Text Palavras-chave: Marennes Oléron; Nutrition; Matière organique; Crassostrea gigas; Huîtres.
Ano: 1980 URL: http://archimer.ifremer.fr/doc/1980/acte-3003.pdf
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Composition en éléments azotés minéraux et orgnaiques dissous de l'eau du bassin conchylicole de Marennes-Oléron ArchiMer
Heral, Maurice; Robert, Jean-michel; Truquet, Isabelle; Barbaroux, Olivier; Garnier, Jacqueline; Razet, Daniel.
Values of nitrogen nutrients (ammonia, nitrite and nitrate) are compared with values of total organic nitrogen and urea. In summer, the consumation by micro and macrophytes is added to less important telluric input of nineral nitroge. However, an important provision of organic nitrogen remains. On the contrary, in winter, organic nitrogen does not represent more than 10% of total nitrogen. The autors postulate that populations of oysters are at the starting point of the organic nitrogen production cycle.
Tipo: Text Palavras-chave: Crassostrea gigas; Biochimical composition; Oysters; Crassostrea gigas; Composition biochimique; Huîtres.
Ano: 1981 URL: http://archimer.ifremer.fr/doc/1981/acte-2940.pdf
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