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Keyword
Cornide de Saavedra
189 record(s)
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IEO 0574
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Practical teaching techniques oceanographic
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West Mediterranean Continental Shelf Studies in the framework of Spain-USA cooperation projects.
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Acoustic survey, conducted with an annual periodicity, to assess and map the pelagic (neritic) resources and the oceanographic and biological conditions of the Gulf of Cadiz continental shelf (both Spanish and Portuguese waters, ICES Subdivision IXa South). The survey season coincides with the anchovy (Engraulis encrasicolus) peak spawning in order to estimate the anchovy SSB by echo-integration. The acoustic sampling for assessment by echo-integration is performed during daylight hours. Biological characterization of the pelagic community is sampled by opportunistic pelagic trawls (for identification of echo-traces), which are also performed during the day. Ancillary biological information (fish eggs) sampled with CUFES (Continuous Underway Fish Egg Sampler) and coupled to the acoustic sampling. Occurrence of sea birds, turtles, and mammals is also recorded along the acoustic transects. Oceanographic characterization of the surveyed area from both discrete (CTD profiles in night stations) and continuous sampling (Thermosalinometer-fluorimeter) coupled to the CUFES sampling. Additional night pelagic trawls were also performed in order to collate some extra biological material and to carry out specific experiments (e.g., in situ determination of the anchovy target strength, TS; nictimeral behavior?).
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Oceanographic survey collected in the framework of the following research project: 'Metodos de Produccion de Huevos. Estimacion de la biomasa de especies pelagicas de interes comercial: sardina, anchoa, caballa y jurel (ICTIOEVA)'. This Project is funded by the Instituto Español de Oceanografia and the main scientific objective is to produce an index and a direct estimate of the spawning stock biomass of Sardine (Sardine pilchardus) in the Cantabrian Sea and Bay of Biscay (to 45°N) using the Daily Egg Production Method (DEPM). Specific aims:a) To estimate the spawning area distribution of sardine and the daily egg production. b) To collect adults to obtain fecundity estimation c) Distribution and abundance of other commercial species of interest: mackerel, horse mackerel and anchovy.d) To describe the oceanographic and meteorological character of the area of study with the aim of relating environmental conditions (temperature, salinity, currents) with the spatial distribution of the ichthyoplankton
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1.- Estimacion de los indices de abundancia (numero y biomasa), de las especies demersales de mayor interes pesquero, asi como de la fauna asociada a ellas. 2.- Determinacion de la distribucion geografica y batimetrica de las diferentes especies. 3.- Obtencion de las distribuciones de tallas de peces, de las capturas asi como de los crustaceos y moluscos de interes pesquero. 4.- Extraccion de otolitos de merluza. 5.- Obtención de datos biologicos de las principales especies comerciales: estados de madurez, proporción de sexos 6.- Obtencion de datos oceanograficos.
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Seasonal survey to study the annual and interannual variability of ocean circulation in the eastern border of the North Atlantic sub-tropical gyre
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Oceanographic survey collected in the framework of the PESCADIZ, STOCA and INGRES3 projects. PESCADIZ is funded by the Instituto Español de Oceanograf¿a / DCRP and the main scientific objective is to produce an index and a direct estimate of the biomass of demersal target species in the Gulf of Cádiz together with the hydrographic caracterization at the time of the cruise. STOCA is a program conducting systematic hydrographic and plankton observations along three standard sections in the eastern Gulf of Cadiz. INGRES3 is a Spanish Ministry for Science and Innovation funded project that maintains a mooring line at the Spartel sill in the Strait of Gibraltar
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Hidrology and ecosystem evaluation
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OBTENCION DE BALANCES DE MASA ENTRE NUTRIENTES PRODUCCION PLANCTONICA Y EXPORTACION DE MATERIALES AL SEDIMENTO EN LA COSTA NO DE LA PENINSULA IBERICA EN RELACION AL AFLORAMIENTO ESTACIONAL.\nOBTENCION DE MEDIDAS DE LA ESTRUCTURA HIDROGRAFICA SUPERFICIAL, CONCENTRACIONES DE NUTRIENTES Y BIOMASA PLANCTONICA, EN LA ZONA DEL TALUD CONTINENTAL DE GALICIA, A AMBOS LADOS DEL FRENTE DEMIPERMANENTE DE CABO FINISTERRE