Catálogo de datos del IEO
Creation year
2013
229 record(s)
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Evaluation of demersal and benthic ecosystem in the northern coast of Spain, using bottom trawl surveys
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Cartographic survey, obtaining seismic profiles and knowledge of the nature of the fund from high-resolution geophysical techniques (multi-beam and parametric probes) and the use of dredgers.
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Cartographic survey, obtaining seismic profiles and knowledge of the nature of the fund from high-resolution geophysical techniques (multi-beam and parametric probes) and the use of dredgers.
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Cartographic survey, obtaining seismic profiles and knowledge of the nature of the fund from high-resolution geophysical techniques (multi-beam and parametric probes) and the use of dredgers.
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Cartographic survey, obtaining seismic profiles and knowledge of the nature of the fund from high-resolution geophysical techniques (mutihaz and parametric probes) and the use of dredgers
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The marine ecosystem of the island of El Hierro, one of the richest and most sensitive of the spanish region, is experiencing the consequences of the first recorded underwater eruption in the Canary Islands in the last 500 years of volcanological history. The principal objective of VULCANO is to characterize the marine ecosystem from a physical-chemical-biological approach in order to quantify the environmental impact caused by the eruptive process. This main aim splits into five particular objectives: 1) to characterize the ecosystem before and after the eruption process, 2) to study the spatio-temporal variability of physical, chemical and biogeochemical properties, 3) to evaluate the impact of the eruptive process on lower trophic levels and 4) Characterization of the physiographic, morphological and structural changes on the seafloor associeted to submarine eruptions and 5) the data integration in existing databases, SIG implementation and dissemination by viewers. These objectives will be accomplished through the development of a multidisciplinary working plan which includes the realization of 3 oceanographic cruises and satellite observations.
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The main objectives for the MedSeA cruise are to: - Refine climatological maps of carbonate species distribution (pH, pCO2, CO32-, CT, AT, CaCO3 saturation states), along with their isotopic signatures, in the Mediterranean Sea. - Report on the determination of the anthropogenic carbon distribution throughout the whole Mediterranean Sea and its associated uncertainty estimate - Determine the effects of carbonate chemistry on Mediterranean calcifying and non-calcifying planktonic organisms. - Determine synergistic effects of acidification, warming and nutrients on key pelagic organisms. - Identify and quantify responses of fundamental Mediterranean biogeochemical processes to acidification and warming. - MedSeA is carried out in collaboration with the Geotraces program in order to collect water for chemical large volume trace elements and isotopes such as Th/Pa, Artificial radionuclides, Th-234, Nd-isotopes and Ra.
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The main aim of the Triennial surveys is to estimate the spawning stock biomass of mackerel and horse mackerel applying the Annual and Daily Egg Production Method (AEPM and DEPM). The method relates the number of freshly spawned eggs found in the water column to the number of female having produced these eggs. Knowing the fecundity of the females and the sex ratio provides an estimate for the spawning-stock Biomass. In the frame of the ICES WGMEGS,AZTI is in charge of sampling the area of the Bay of Biscay during period 3 (March April) and 4 (May). Sampling consist in collecting plankton samples to identify and stage the mackerel and horse mackerel eggs, and capture adults mackerel to estimate reproductive parameters (Fecundity, atresia, Batch fecundity, Spawning Fraction and sex ratio). Data of length, weight, sex maturity and otolith for age determination are recorded at each haul. Therefore, additional samples will be collecting for the following objectives: a) Plankton and Adult mackerel samples for genetic analysis. The objective of this sampling is to determinate the population structure of NEA mackerel and test the spawning homing behaviour. b) Adults mackerel samples for GCxGC-MS analysis for discrimination of spawning ground. c) Fish Eggs for fluorescent and in situ hybridization-Method (ISH). Environmental parameters: At each station profile of sea temperature and salinity are recorded.
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The campaign targets under INFUECO 1113, to carry on board the research vessel Angeles Alvariño, are the identification and mapping of habitats and characterization of biogenic benthic and demersal species. Specific objectives focus on the investigation of benthic Banks areas of 'Amanay' and 'El Banquete' by direct and visual methods. Specifically: · Extensive visual videogrammetry HD with sled towed "NEXUS". · Recognition with multibeam bathymetric probe.
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Prospecting Scomber scombrus and Trachurus trachurus eggs and adult catches to estimate egg production and fecundity of Scomber scombrus for joint international evaluation of spawning stock biomass of mackerel by the method annual egg production (MPAH) and production eggs Trachurus.