Consulta: subjectFacets:"Crépidule"
Registros recuperados: 7
Data/hora: 07/06/2024 06:43:53

Bilan du suivi de l'exploitation industrielle de la crépidule en Bretagne Nord (baies de Saint-Brieuc et du Mont Saint-Michel) 2002-2005
Provedor de dados: 5
Autores: 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

Etude sanitaire de la zone 35.01 groupe I - Crépidule. Ille et Vilaine
Provedor de dados: 5
Autores: Cheve, Julien; Gerla, Daniel.
Ce rapport final présente l’évaluation de la qualité microbiologique et chimique de la zone 35.01 pour le groupe I : crépidule (Crepidula fornicata), gastéropode filtreur. Aux vues de l’étendue de la zone d’étude (environ 20 km) et de sa position au large, la phase initiale de l’étude ne s’est pas attachée à la définition précise de l’ensemble des caractéristiques du littoral bordant la zone. Mais elle a consisté en une approche plus globale à l’échelle des bassins versants. L’étude s’est déroulée entre novembre 2012 et janvier 2014, avec l’obtention de 26 résultats microbiologiques (dénombrement des E. coli dans 100 g de CLI (Chair et Liquide Intervalvaire)) et la recherche sur un échantillon de molécules chimiques (Cadmium, mercure, plomb, PCB dioxine...
Tipo: Text
Palavras-chave: Etude sanitaire; E. coli; Contamination bactériologique des coquillages; Contaminants chimiques; Milieu marin; Qualité microbiologique et chimique des zones de production; Département 35; Ille-et-Vilaine; Baie du Mont- Saint-Michel; Groupe I; Crépidule; Crepidula fornicata.
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00179/29044/27481.pdf

Cartographie et évaluation du stock de crépidules en baie du Mont Saint-Michel, en 2004
Provedor de dados: 5
Autores: 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

Réseau de surveillance benthique – Région Bretagne. Approche sectorielle subtidale : Identification et caractérisation des habitats benthiques du secteur Trégor-Goëlo
Provedor de dados: 5
Autores: Ehrhold, Axel; Chevalier, Claire; Alix, Anne-sophie; Autret, Elodie; Caisey, Xavier; Drussel, Benjamin; Gaffet, Jean-dominique; Hamon, Dominique; Houlgatte, Eric; Pluquet, Fabrice; Biscara, Laurie; Choisnet, Justine; Bajjouk, Touria.
In 2000 Ifremer launched and coordinated the development of a monitoring strategy for the REBENT network (REseau BENThique) in order to assess the aftermath of the “Erika” oil spill which took place in December 1999. Its aim is to provide consistent baseline knowledge on coastal benthic habitats, as well as to develop a monitoring tool that detects changes at various spatial and temporal scales. Sector-based seabed habitat mapping in shallow water (&lt; 50 m deep), is currently being conducted throughout Brittany's coastal waters using a combination of geoacoustic marine systems together with ground-truthing using biological grab sampling and seabed observations.  Due to the extended area, the overlap of soft and rocky bottoms, and contrasting hydrological...
Tipo: Text
Palavras-chave: Rebent; Trégor-Goëlo; Bréhat; Cartographie d’habitats; Sonar latéral; Macrofaune benthique; Peuplements; Crépidule; Maërl; Sédiments; Morphologie; Dynamique sédimentaire; Rebent; Trégor-Goëlo; Bréhat archipelago; Marine habitat mapping; Sidescan sonar; Benthic macrofauna; Communities; Crepidula bed; Maerl; Sediment; Morphology; Bedload transpor.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00280/39161/37724.pdf

Répartition et évaluation du stock de la crépidule (Crepidula fornicata), entre le cap Fréhel et le Mont Saint-Michel (Manche Ouest)
Provedor de dados: 5
Autores: Blanchard, Michel.
This report deals with results obtained in 1995 and 1996 through a grant of Council of Brittany. The distribution and stock assessment of the slipper-limpet population (Crepidulafornicata) is analysed, in the near shoreline between Cap Fréhel and Mont-Saint-Michel. Several cruises allowed to use side-scan sonar, underwater video and scuba diving observations. Hamon grab has been used for quantitative sampling. Several direct observations were done ashore for complete informations. On this seaside of Brittany, it is observed that the population is mainly concentrated along the coast and main densities are found in the bay of Cancale, around deep oyster beds. Total fresh biomass is estimated about 149 000 metric tons. Local reasons and consequences of such a...
Tipo: Text
Palavras-chave: North of Brittany; Side scan sonar; Spread analysis; Stock assessment; Cartography; Crepidula fornicata; Slipper limpet; Bretagne nord; Sonar à balayage latéral; Causes de prolifération; Évaluation de stock; Distribution géographique; Crepidula fornicata; Crépidule.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/1999/rapport-3854.pdf

Dynamique de comblement d'un bassin sédimentaire soumis à un régime mégatidal : Exemple de la Baie du Mont-Saint-Michel
Provedor de dados: 5
Autores: Ehrhold, Axel.
This work has been performed in a DRET/CNRS convention and related to the problems of sedimentary dynamics in a bay dominated by tidal currents. It combines the descriptive study of the morphosedimentary units with the modeling of bedload processes. At the South channel Isles, the Mont-Saint-Michel bay is well known for his exceptional tidal range. It's open to the offshore with two broad master channels on both sides from the Chausey's archipelago. On the coarse sedimentary cover of pebbles and gravels, sediments dynamic series of some  plurikilometres sandy ribbons. These sands are temporarily stocked in lonely bedforms and in coastal maritime banks, sandwaves field of Granville and tide delta. The coastal banks are connected in the littoral prism. They...
Tipo: Text
Palavras-chave: Bedload transport; Hydrodynamic numerical model; Sediment color; Crepidule; Coastal banks; Sandwaves; Sand ribbons; Swells; Tidal currents; Sedimentary prism; Norman breton Gulf; Transport solide; Code numérique; Couleur des sédiments; Crépidule; Bancs côtiers; Dunes tidales; Rubans sableux; Houle; Courants de marée; Prisme sédimentaire; Golfe normand breton.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/1999/these-3232.pdf

Suivi des opérations de nettoyage des bancs de crépidules (Crepidula fornicata), en mai 1995, sur le littoral de Fouras (Charente-Maritime)
Provedor de dados: 5
Autores: Blanchard, Michel; Thomas, Gerard.
An experiment was carried out in order to look at the feasability of slipper-Iimpets removal in the area of Fouras (Charente-Maritime, France) between May, 9 - 12, 1995. A total of 150 tons were removed from oyster beds, boiled according to a dutch process and dropped in amarine dump near Aix Island.  It was necessary to check the process efficiency as weil as the environmental quality. lFREMER measure data and observations before, during and after this experiment are the topics of concern.  The process appears to be efficient and the discharge has no significant effect on the environment.
Tipo: Text
Palavras-chave: Crépidule; Crepidula fornicata; Traitement; Fouras; Charente-Maritime; Slipper-limpet; Crepidula fornicata; Process; Fouras; Charente-Maritime; France.
Ano: 1998
URL: http://archimer.ifremer.fr/doc/00094/20511/18182.pdf