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Cadiz
158 record(s)
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Cr VERA ref C2945823.987 ICES created form
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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.- Obtencion de datos biologicos de las principales especies comerciales: estados de madurez, proporcion de sexos 6.- Obtencion de datos oceanograficos.
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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.- Obtencion de datos biologicos de las principales especies comerciales: estados de madurez, proporcion de sexos 6.- Obtencion de datos oceanograficos.
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Hidrology and ecosystem evaluation
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Hidrology and ecosystem evaluation
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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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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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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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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.- Obtenci??n de datos biologicos de las principales especies comerciales: estados de madurez, proporcion de sexos 6.- Obtencion de datos oceanograficos.
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The main goal of the INDEMARES CHICA 0211 oceanographic cruise was to study the associated habitats and the environmental conditions related to areas of the gas seepages in the Gulf of Cadiz. For this, the sampling in different mud volcanos was planned using a various methodology: fishing trawl, beam trawl, box corer, gravity corer, benthic trawling dredge, ADCP, and oceanographic sampling carousel (CTD, ADCP, oximeter, turbidity sensor, fluorimeter).The survey was carried out between the 10th February 2011 and the 7th March 2011 having Cadiz as a base port. The fair-weather remained during the campaign except on the 16th February because of the storm conditions.Mud volcanoes (Albolote, Gazul, Anastasya, Tarsis, Pipoca, Chica, Aveiro, Hesperides and Almazan) were sampled on the top, on the slope and on the adjacent areas of each one with the methodologies before mentioned. So, it was collected the following samplings: 47 benthic trawling dredges, 31 beam trawl, 12 fishing trawl, 40 box corers, 10 gravity corers, 132 CTDs and 84 oceanographic sampling carousel.The preliminary results have confirmed the existence of habitats associated with the gas seepages, and other habitats that are included in the Directive Habitats 2000 and OSPAR, as gorgonian reefs over carbonated hard substrate, coral bamboo fields, Isidella, in muddy seafloor, deep sponge aggregations,and communities of the Pennatulacea and of the burrowing megafauna on soft bottoms.