Cartographie et évaluation du stock de crépidules en baie du Mont Saint-Michel, en 2004

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Identifiant documentaire 9-5901
Identifiant OAI oai:archimer.ifremer.fr:5901
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Auteur(s): Blanchard, Michel,Clabaut, Philippe,Abernot-le Gac, Chantal
Mots clés 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
Date de publication 01/03/2006
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Droits de réutilisation 2006 Ifremer

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Description
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 Pointe-de-Grouin to Pointe-de-Champeaux line.

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