Catálogo de datos del IEO
Keyword
balances and scales
116 record(s)
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Mantenimiento de los colectoresprofundos de langosta, obtención de larvas filosomas y muestreo con dragas en maerl.
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New calibration tests between B/O Cornide de Saavedra and the B/O Miguel Oliver, by the results of the 2013 campaign Demersal, showing behavior too benthic.
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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.
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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.
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Oceanographic survey collected in the framework of the following research project: ¿Métodos de Producción de Huevos. Estimación de la biomasa de especies pelágicas de interés comercial: sardina, anchoa, caballa y jurel (ICTIOEVA)¿. This Project is funded by the Instituto Español de Oceanografía and the main scientific objective the survey 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 45ºN) 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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Study of strategies to reduce discards and unwanted species: selectivity and survival in trawling in Cantabrian-Northwest zone.
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Main objectives: Aplication of Daily Egg Production Method to estimate Sardine Spawning Stock Biomass. Estimate spawning area of sardine. Secondary objectives: Estimate egg and larva abundances for sardine, anchovy, mackarel and horse mackarel. Measure the salinity , temperature depth in the water column using ctd profiles.
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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. Sampling consist in collecting plankton samples to identify and stage the mackerel and horse mackerel eggs. Environmental parameters: At each station profile of sea temperature and salinity are recorded.
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Identification of benthic communities. During the cruise is intended to cover the following targets: - Identify the benthic habitats and their spatial distribution by direct sampling (epibentonic trawl) and indirect (ROV, sled). - Complete the floristic and faunistic inventory. - Characterize the sediment (grain size and organic matter). - Multibeam bathymetric survey. Further analysis of this information will give us to : - Perform a bionomic map of marine benthos, representing the bottom type and the biological community that inhabits it. - Estimate the benthic biodiversity. - Estimate the abundance of the most characteristic species. - Mapping the main habitats of interest. - Get a sedimentary map. - Complete the geomorphology of the study area.
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Study of strategies to reduce discards and unwanted species: selectivity and survival in trawling in Cantabrian-Northwest zone.