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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.\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.\nRecogida de material para estudios de contaminacion por metales pesados.\nRecogida de material para estudios geneticos.\nRecogida de la especie 'POTA EUROPEA' para estudios de parasitos.
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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.\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.\nRecogida de material para estudios de contaminacion por metales pesados.\nRecogida de material para estudios geneticos.
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The overall aim of the UKSOLAS project DOGEE-SOLAS is the parameterization of air-sea gas exchange, which is a currently a major uncertainty in global modelling. RRS Discovery cruise D320 thus was primarily concerned with the measurement of air-sea gas transfer velocities and some of the important physical parameters that influence them through contributing to near surface turbulence, and other processes. In brief, specific cruise objectives were: 1. Determine open ocean gas transfer velocities through a number of dual-tracer releases (3He & SF6). 2. Investigate the role of surfactant in gas exchange through a targeted surfactant release in conjunction with (1). 3. Determine CO2 fluxes and transfer velocities, and make associated hydrographic and turbulence related measurements from autonomous ASIS (Air-Sea Interaction Spar) buoys. 4. Measure air-sea fluxes of CO2, sensible heat, latent heat and momentum using the AUTOFLUX automated sensor array 5. Measure underway, total gas tension, dissolved O2, and CO2 to obtain independent air-sea gas exchange estimates. 6. Make covariance and gas budgeting estimates of air-sea gas exchange using intelligent profiling Lagrangian floats. 7. Independently determine DMS fluxes and gas transfer velocities for comparison with CO2 to examine the role of gas solubility in gas transfer. 8. Deploy a spar buoy (NOC) for measurement of wave heights and bubble properties 9. Record and measure whitecap coverage and wave breaking coincident with the air-sea flux measurements using ship mounted cameras 10. Record key meteorological variables 11. Quantify flow distortion biases in the direct flux measurements via the use of established models. 12. Make biogas, surfactant and bacterial measurements in the surface microlayer and in the uppermost metres of the ocean using surface microlayer samplers, a remotely operated catamaran, and a near surface sampler. 13. Deploy an autonomous powered profiler (ASIP) for turbulence-related measurements in the mixed layer. Objectives 1-12 were all met. Unfortunately, due to mechanical failure and loss of ASIP, objective 13 was not realised.
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Main objectives: assesment and maping of spawing biomass of blue whiting by ecointegration, characterization of the hidrologic conditions of the surveyed area.
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Spanish Porcupine bottom trawl survey aims to collect data on the distribution and relative abundance, and biological information of commercial fish in Porcupine bank area (ICES Division 7b-k). The primary target species are hake, monkfish, white anglerfish and megrim, which abundance indices are estimated by age, with abundance indices also estimated for Nephrops, four-spot megrim and blue whiting. Data collection is also collected for several other demersal fish species and invertebrates.
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Evaluate transport of water salinity, temperature, carbon and other variables of the greenhouse
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Spanish Porcupine bottom trawl survey aims to collect data on the distribution and relative abundance, and biological information of commercial fish in Porcupine bank area (ICES Division VIIb-k). The primary target species are hake, monkfish, white anglerfish and megrim, which abundance indices are estimated by age, with abundance indices also estimated for Nephrops, four-spot megrim and blue whiting. Data collection is also collected for several other demersal fish species and invertebrates.
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To estimate stratified abundances indices by age of hake, megrims and monkfishes. To estimate stratified abundances indices of commercial fish species (N. norvergicus, P. blennoides, H. dactylopterus, G. cynoglossus and rays). To estimate recruitment indices and spatial trends of younger ages of hake, megrims and monkfishes. To describe the spatial distribution patterns of demersal and benthic species of Porcupine. To collect data for the determination of biological parameters for the demersal species selected by DCF (Data Collection Framework).
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Spanish Porcupine bottom trawl survey aims to collect data on the distribution and relative abundance, and biological information of commercial fish in Porcupine bank area (ICES Division VIIb-k). The primary target species are hake, monkfish, white anglerfish and megrim, which abundance indices are estimated by age, with abundance indices also estimated for Nephrops, four-spot megrim and blue whiting. Data collection is also collected for several other demersal fish species and invertebrates.
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Spanish Porcupine bottom trawl survey aims to collect data on the distribution and relative abundance, and biological information of commercial fish in Porcupine bank area (ICES Division VIIb-k). The primary target species are hake, monkfish, white anglerfish and megrim, which abundance indices are estimated by age, with abundance indices also estimated for Nephrops, four-spot megrim and blue whiting. Data collection is also collected for several other demersal fish species and invertebrates.m