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Registros recuperados: 5
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Approche quantitative de la fonction de nourricerie jouée par les systèmes vasières-estuaires 5
Parlier, Emmanuel.
Coastal fish populations settle more or less frequently, at various stages, estuarine systems. Tidal marshes are one of the components of these mosaics of habitats. The first part of this work describes fish assemblages through the utilisation of these systems by fishes analysed in order to propose a revised functional classification of ecological guilds. T h i s new classification is used to compare fish communities of four estuarine systems in the western coast of France: the Mont Saint- Michel Bay, the Saint-Brieuc Bay, the Loire estuary and the Aiguillon Bay. The second part aims at characterizing the nursery function as defined by Beck et al. (2001). Acombinative approach based on gut content analysis, and stable isotope analysis shows that Yo Y s e a...
Tipo: Text Palavras-chave: Isotope ratio; Otolith; Saltmarsh; Nursery; Mont Saint Michel Bay; Saint Brieuc Bay; Aiguillon Bay; Seine estuary; Loire estuary; NEA; Dicentrarchus labrax; Fish communities; Rapports isotopiques; Otolithe; Marais salés; Nourricerie; Baie du Mont Saint Michel; Baie de Saint Brieuc; Baie de l'Aiguillon; Seine; Loire; ANE; Dicentrarchus labrax; Peuplement de poissons.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/these-4601.pdf
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Bilan du suivi de l'exploitation industrielle de la crépidule en Bretagne Nord (baies de Saint-Brieuc et du Mont Saint-Michel) 2002-2005 5
Blanchard, Michel; Hamon, Dominique.
The slipper-limpet (Crepidula fornicata) is a marine gastropod which causes serious perturbations in shellfish beds, because of spatial spreading and density rising. Along French coasts, in Northern Brittany, two bays are highly colonized : bay of Saint-Brieuc, centre for scallops fishery, and bay of Mont-Saint-Michel, a famous oyster-farming area, with a total limpet stock about 450 000 metric tons. The association AREVAL was founded in 2001 to manage there, an industrial collect of limpets by a succing-dredge, followed ashore by a treatment for calcareous soil improvement. The scientific survey, contracted to IFREMER, included measurements of long andshort-term dredge's effects on grounds and limpet population, and proposals to set up dredging...
Tipo: Text Palavras-chave: France; Western Channel; Bay of Mont Saint Michel; Bay of Saint Brieuc; Impact; Dredging; Treatment; Crepidula fornicata; Slipper limpet; Manche Ouest; Baie du Mont Saint Michel; Baie de Saint Brieuc; Impact; Dragage; Exploitation; Crepidula fornicata; Crépidule.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/rapport-6301.pdf
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Cartographie et évaluation du stock de crépidules en baie du Mont Saint-Michel, en 2004 5
Blanchard, Michel; Clabaut, Philippe; Abernot-le Gac, Chantal.
In 2003 and 2004, 3 cruises were organized using observations systems and sampling techniques to carry out cartography and stock assessment of the Slipper-limpet population (Crepidula fornicata) in the bay of Mont-Saint-Michel (Western Channel). This was done as part of the National Programme of Coastal Environment (Programme National d'Environnement Côtier - PNEC). The study helped to update previous data collected in 1995-96 with similar techniques : side-scan-sonar and submarine video for observation, and scuba diving and grabs for samples collection. Results show that during an eight years period, the limpet population spread in the southern part of the bay and that its stock rose about 50%, reaching about 150,000 metric tons, south of a...
Tipo: Text Palavras-chave: Manche ouest; Golfe normano breton; Baie du Mont Saint Michel; Sonar à balayage latéral; Cartographie; Évaluation de stock; Crepidula fornicata; Crépidule; Western Channel; Norman Gulf; Bay of Mont Saint Michel; Side scan sonar; Cartography; Stock assessment; Crepidula fornicata; Slipper limpet.
Ano: 2006 URL: https://archimer.ifremer.fr/doc/2006/rapport-5901.pdf
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Consommation de la macro-faune invertébrée benthique par les oiseaux d'eau en baie du Mont-Saint-Michel 5
Le Mao, Patrick; Pasco, Pierre-yves; Provost, Sébastien.
An evaluation of the energy transfer between zoobenthos and water birds in the Mont-Saint-Michel bay was carried out from October 2003 until September 2004. Global consumption by waders is similar to that estimated on data collected 20 years ago, in spite of strong variations in seasonal occurrence and species composition of shorebirds populations in the bay. Total consumption (including gulls and predatory anseriformes) is about 2,15 g ash free dry weight/m2 /year, a very low figured if compared to results from the Wadden Sea. These two results seems to confirm the initial findings from the PNEC research program in the Mont-Saint-Michel bay: the bay is an oligotrophic system (oceanic type) presenting a strong functional inertness in the mid and long term,...
Tipo: Text Palavras-chave: France; Mont Saint Michel Bay; Water birds; Benthic macrofauna; Baie du Mont Saint Michel; Oiseaux d'eau; Macro faune invertébrée benthique.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/publication-2600.pdf
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Estimation du stock d'huîtres creuses Crassostrea gigas, en élevage en Baie de Cancale, en octobre 2002 5
Mazurie, Joseph; Bouget, Jean-francois.
in order to estimate the carrying capacity of Mont Saint-Michel Bay, the stock (or biomass) of cupped oysters, Crassostrea gigas, cultivated intertidally, in Cancale Bay, has been estimated in october 2002. Aerial photographs, at 2 scales (1/10 000 and 1/2000), provided by the mollusc farmers union, have been used to estimate the cumulative length of surelevaged trestles (« tables ») and the occupation rate by oyster bags. A field survey, between the 7th and 9th of october 2002, has been conducted by Ifremer with the help of « Lycée Maritime de Saint-Malo », on 40 sampled stations : 3 subsample bags per station were examined (counts and weights of different age-class oysters). 309 ha out of 333 leased ha were considered exploited (after elimination of...
Tipo: Text Palavras-chave: Baie du Mont Saint Michel; Cancale; Crassostrea gigas; Cupped oysters; Production; Biomass; Baie du Mont Saint Michel; Cancale; Crassostrea gigas; Huîtres creuses; Production; Biomasse; Stock.
Ano: 2004 URL: http://archimer.ifremer.fr/doc/2004/rapport-5296.pdf
Registros recuperados: 5
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