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145
2049 record(s)
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Cr. CEE 90. Control of Phytoplankton Dominance. - ref 900911.0004
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CR CANTABRICO 02/95 - ref 130
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La creciente necesidad de informacion que requiere la evaluacion y gestion actuales de las especies explotadas, especialmente en el caso de la merluza, pero tambien en otros como los gallos, rapes o la cigala, hacen necesario obtener informacion independiente de las pesquerias sobre la situacion de estas poblaciones. Para lo cual se determino la realizacion de los siguientes objetivos:\nEstimacion de indices de abundancia estratificados por edad de merluza, rapes y gallos en las divisiones VIIbk.\nEstimacion de indices de abundancia estratificados de otras especies comerciales como la cigala, el mendo, las rayas o la brotola de fango.\nEstimacion de la fuerza de los reclutamientos y localizacion de las agregaciones de juveniles de merluza, rapes y gallos.\nDescripcion de los patrones de distribucion espacial de las especies demersales y bentonicas en el banco de Porcupine.\nObtencion de muestras de especies comerciales para estudios de niveles de contaminacion por arsenico y metales pesados.\nRecogida de muestras de especies para el estudio de la biologia de las principales especies comerciales en el area (otolitos, ilicios y otros).\nEstudio de la hidrografia (temperatura, salinidad y densidad de la columna de agua) del banco de Porcupine.\nMarcado de rapes para el estudio de sus migraciones y crecimiento.\nRecogida de ejemplares de jurel para estudios de genetica.
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- Exploraciones geofisicas que permitan determinar su constitucion y fisiografia\n- Estudio de procesos fisicos\n- Procesado y tratamiento de datos, para la obtencion de mapas, cartas e informes\n- Estudio de batimetria, geomorfologia, gravimetria, magnetometria y calidades de sedimentos superficiales de las zonas estudiadas
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CR Campana "Ria de Sada",Verano
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AROSA-PRIMAVERA 74
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? Estimation of the abundance of small pelagic fishes, with special focus on anchovy juveniles, in the southern part of the Bay of Biscay.\n? Cartography of the distribution of these populations.\n? Study of the distribution of anchovy and sardine eggs.\n? Biological sampling of the species of interest (e.g. ). Particularly for anchovy, analysis of stomach contents for the characterisation of the food regime and of otholits for the study of daily growth rates.\n? Continuous sampling of auxiliary variables for the characterisation of the ambient environment.\n? Study of the hydrographic conditions and distribution of plankton components in order to define the physical and biological processes which are relevant for the regulation of the species of interest.
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CR PELACUS 0405 Give an improved estiamtion of the abundance of pelagic fish present in the North-east Atlantic waters in spring which is the spawning period for these fish species, but focussing in sardine and anchovy. Complementary to this main objective the survey design and strategies will allow the enviroment be characterised by recording differente variables (i. e. temperature, salinity, fluorescence, plankton, winds or air temperature) in vertical and horizontal profiles along the surveyed area with no noticeable extra-effort. As it was pointed out, these variables will help the acoustic estimations be improved whilst an extensive environment characterisation at the spawning time will be done. This year there was in use for the first time an Laser Optical Plankton Counter (LOPC), in collaboration with investigators of the IFREMER. Also sampling of sardine for the estimation of parameters of fecundity necessary for the application of the MPDH.
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? Estimation of the abundance of small pelagic fishes, with special focus on anchovy juveniles, in the southern part of the Bay of Biscay.\n? Cartography of the distribution of these populations.\n? Study of the distribution of anchovy and sardine eggs.\n? Biological sampling of the species of interest (e.g. ). Particularly for anchovy, analysis of stomach contents for the characterisation of the food regime and of otholits for the study of daily growth rates.\n? Continuous sampling of auxiliary variables for the characterisation of the ambient environment.\n? Study of the hydrographic conditions and distribution of plankton components in order to define the physical and biological processes which are relevant for the regulation of the species of interest.
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CR PELACUS 0404 Give an improved estiamtion of the abundance of pelagic fish present in the North-east Atlantic waters in spring which is the spawning period for these fish species, but focussing in sardine and anchovy. Complementary to this main objective the survey design and strategies will allow the enviroment be characterised by recording differente variables (i. e. temperature, salinity, fluorescence, plankton, winds or air temperature) in vertical and horizontal profiles along the surveyed area with no noticeable extra-effort. As it was pointed out, these variables will help the acoustic estimations be improved whilst an extensive environment characterisation at the spawning time will be done. (French 20050099/ref 4030270)