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	Provedor de dados ArchiMer (2) Autor Scalabrin, Carla (2) Diner, Noel (1) Masse, Jacques (1) Weill, Alain (1) Palavra-chave Fish shoal (2) Fisheries acoustics (2) Acoustique halieutique (1) Analyse statistique (1) Banc de poissons (1) Bay of Biscay (1) Classification hiérarchique (1) Clustering analysis (1) Echo-integration (1) Echo-intégration (1) Pelagic fish (1) Statistical analysis (1) Mais... Tipo do documento Text (2) Ano 1993 (2) País France (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Acoustic detection of the spatial and temporal distribution of fish shoals in the Bay of Biscay ArchiMer Scalabrin, Carla; Masse, Jacques. Echo sounder data were used to investigate the spatio-temporal variability of shoal behaviour in the Bay of Biscay. Data collected from annual surveys were processed using MOVIES-B software in order to mcasure this variability. The software was designed to measure morphological, energetic and space-time distribution descriptors from the acoustic signal received from fish shoals. Two surveys, DAAG 90 and DAAG 91, provided the appropriate characteristics for such an analysis. The survey's objective was to obtain relative abundance indices for the anchovy (Engraulis encrasicolus) biomass in the Bay of Biscay. The surveys were carried out in the same area (southern Bay of Biscay), at the same period (April) within one year interval (1990 and 1991), using the... Tipo: Text Palavras-chave: Fish shoal; Fisheries acoustics; Bay of Biscay; Pelagic fish. Ano: 1993 URL: http://archimer.ifremer.fr/doc/00190/30111/28580.pdf MOVIES-B: an acoustic detection description software. Application to shoal species' classification ArchiMer Weill, Alain; Scalabrin, Carla; Diner, Noel. Software, MOVIES-B, developed by IFREMER (Institut français de recherche pour l'exploitation de la mer), enables the recognition of echogram features as acoustic detection structures according to spatial-energetic contiguity criteria. These structures (shoals, plankton layers) are described by energetic, morphological, spatial and temporal descriptors. Specifying acoustic detections as individual shoals will allow shoal by shoal echo-integration and may lead to better biomass estimation and shoal species description. The conceptual and operational framework of MOVIES-B is presented in the first part of this paper. The second part presents preliminary work performed in order to assess the feasibility of classification and possible species identification of... Tipo: Text Palavras-chave: Echo-intégration; Banc de poissons; Acoustique halieutique; Analyse statistique; Classification hiérarchique; Echo-integration; Fish shoal; Fisheries acoustics; Statistical analysis; Clustering analysis. Ano: 1993 URL: http://archimer.ifremer.fr/doc/00190/30078/28573.pdf Registros recuperados: 2 Primeira ... 1 ... Última

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