|
|
|
|
| |
|
|
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 |
| |
|
| |
|
| |
|
|
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 |
| |
|
|
|