Data/hora: 10/06/2024 14:54:26

Provedor de dados: | Institutional Archive of Ifreme (ArchiMer)
País: | France
Título: | Evaluation des stocks mytilicoles de Basse-Normandie en 2006
Autores: | Nogues, Loic; Gangnery, Aline.
Data: | 2008-09
Ano: | 2008
Resumo: | Since 1989, the standing stock of bivalves cultivated in Normandy was estimated every 5 years by Ifremer. Within the frame of the OGIVE project, a new study was conducted in 2006 to evaluate the mussel standing stock. Classical sampling methods (stratified, two-stage and simple random sampling) were used and adapted to each culture area. The total standing stock in Normandy was evaluated to 23 550 tons with a precision of 10.94 %. The west coast of Cotentin remained the main production area in Normandy with approximately 22 000 tons of mussels, whereas the east coast and the baie des Veys only represented a small part of the total stock (respectively 6% and 1%). The collected data were also used to map the spatial distribution of mussel biomasses. This map was based on kriging techniques. The results obtained through kriging were then used to re-evaluate the standing stock. The results showed that the distribution of mussel biomasses was spatially structured. The estimation of the standing stock was similar whatever the statistical method used. This work allowed to validate simultaneously the total standing stock as well as the spatial distribution.
Tipo: | Text
Idioma: | Francês

Identificador:

http://archimer.ifremer.fr/doc/00254/36489/35031.pdf

http://archimer.ifremer.fr/doc/00254/36489/

Formato: | application/pdf

Fonte:

2008 Ifremer

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