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	Provedor de dados ArchiMer (2) Autor Fifas, Spyros (2) Berthou, Patrick (1) Foucher, Eric (1) Pitel, Mathilde (1) Vigneau, Joel (1) Palavra-chave Drague (2) Dredge (2) Amande (1) Assessment (1) Baie de Seine (1) Bay of Seine (1) Bittersweet palourdi (1) Bretagne (1) Brittany (1) Campagne (1) Clam (1) Coquille Saint Jacques (1) Eastern Channel (1) Environmental impact (1) Evaluation (1) Fishing boat (1) Gestion (1) Impact environnemental (1) Management (1) Manche orientale (1) Mais... Tipo do documento Text (2) Ano 2001 (2) País France (2) Idioma Francês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Caractéristiques de dragues et pêcheries ArchiMer Pitel, Mathilde; Berthou, Patrick; Fifas, Spyros. Basically, a dredge is a bottom-towed gear and consists of a metal frame with a blade or teeth, to dig into the sediment and extract the shelled molluscs, and a mesh bag to collect the catch. Whereas hand dredging is observed on some intertidal beds (Donax trunculus in France), the use of dredge generally needs a fishing boat. There is a great diversity of dredge types, with specific designs used to target different species in particular beds: Manual dredges for Donax (Donax trunculus), Warty venus (Venus verrucosa) and clams (Venerupis pulastra, Ruditapes sp) Dredges for King scallops (Pecten maximus) Dredges for Warty venus (Venus verrucosa) Dredge for Queen scallops (black and white, Chlamys varia and Chlamys opercularia) Dredges for small... Tipo: Text Palavras-chave: Management; Environmental impact; Spisula; Bittersweet palourdi; Fishing boat; Clam; Dredge; Brittany; Gestion; Impact environnemental; Spisula; Amande; Navire de pêche; Drague; Bretagne. Ano: 2001 URL: http://archimer.ifremer.fr/doc/2001/rapport-4608.pdf Les campagnes d'évaluation du stock de coquilles Saint-Jacques en Manche orientale : méthodologie et estimation des indices d'abondance ArchiMer Vigneau, Joel; Fifas, Spyros; Foucher, Eric. The methodology used for obtaining absolute abundance indices for Eastern Channel scallop is described in this paper. For the survey (COMOR), stratified multi-stage random sampling is used. The number of sampled units is computed based on variance estimates from the last survey. Knowledge of gear (Brittany dredge with a diving plate) selectivity and efficiency parameters is required for estimating total exploitable biomass and absolute abundance indices by age and strata. Details of the mathematical development of all estimators are given. A non parametric bootstrap provides confidence intervals for all estimates. Tipo: Text Palavras-chave: Eastern Channel; Bay of Seine; Dredge; Pecten maximus; Scallop; Survey; Assessment; Manche orientale; Baie de Seine; Drague; Pecten maximus; Coquille Saint Jacques; Campagne; Evaluation. Ano: 2001 URL: http://archimer.ifremer.fr/doc/2001/rapport-6550.pdf Registros recuperados: 2 Primeira ... 1 ... Última

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