Acoustic evaluation and mapping of neritic pelagic resources and oceanographic and biological conditions of the continental shelf of the Gulf of Cadiz.

Multidisciplinary cruise: Mooring,sampling physical and chemical variables that will: - Study thermohaline characteristics, kinematics, dynamics and biology of the eastern half of the Gulf of Cadiz - Study of carbon flows between the Atlantic and Mediterranean watershed. - Establish relationships between climate, hydrology and hydrodynamics and the early stages of development of the species associated with the platform, with emphasis on species of commercial interest in a space/time. - Provide data to feed global and regional numerical models. - Generate and distribute a database for the evolution of the marine climate and its resources.

The campaign has two objectives: 1. Making a mesh of CTD's in the Ibiza channel and radial RADMED in Mallorca Channel. 2. The launch drifter of the Ibiza channel for the program SOCIB Drifter Facility.

The sediments of the Galician Interior Basin realm are capable of recording the peculiar conditions of the last glacial‐interglacial dynamics transition into the current interglacial and their evolution into present day, as they are influenced by the Thermohaline Circulation (THC) and because their proximity to the important continental land‐mass of western Iberia. The knowledge of the rates and magnitudes of change of this system is critical to understand its climate dynamics, processes and feedbacks, and hence its role on a local to sub‐regional scale. The inference of these climatic mechanisms encrypted in the deep‐sea sedimentary record needs to constrain the spatial and temporal scales of the sedimentary processes involved, in particular the identification of source areas, pathways and transport, storage times and hydrodynamic conditions. To adequately assess these encrypted sedimentary archives it is instrumental to identify the sedimentary expression of the main processes and forcements involved and accurately determine the spatial and temporal scales, rates and magnitudes of the processes and feedbacks that generate these records. This proposal aims to carry out a high‐resolution reconstruction of the transport time,provenance, sediment fluxes, wave climate, bottom‐current variability and post‐depositional alteration in a number of surficial samples and cores from the Galician Interior Basin. This project will provide a first insight into the relation between the last North Atlantic climate oscillation and the local regional components including abrupt climate changes (i.e. H events) and local events since the end of the last glacial period from a paleoclimatic proxies perspective. We will use a twofold approach by first constraining the current sedimentary conditions to their associated local wave climate and North Atlantic regional forcements to subsequently infer the paleoenvironmental conditions from the past 30‐50 ky sedimentary record. Firstly, analysing and modelling the present hydraulic conditions from newly acquired and historical wave climate and oceanographic records from the study area will study the current sedimentary conditions and forcements. These data will be linked to the present day sedimentation conditions by direct measurements of present day sedimentation and oceanographic conditions, supported by moored sediment traps, CTD, Doppler records and surficial samples. Epifauna, infauna, microfauna and sediment microestructure will also be studied. Subsequently we will udertake a multidisciplinary study combining high‐resolution geochemical, physical properties, environmental magnetic sediment derived records with high precision U‐series isotopes analyses in a well‐constrained geochronological framework. Further support will be provided by seismic‐acoustic data acquisition. The combination of these sedimentological, micropaleontological, geochemical and geophysical tools will help in better resolving the role of current strength, circulation and sediment provenance changes also considering across vs. along margin transport balances in the sedimentary record of the Galician Internal basin over the last 30‐50 ky

NA

Investigate the Spanish Continental Shelf West Off Canary Island

Campaign for sampling GIFT series in which to analyze physicochemical variables that will: - Monitor thermohaline and biogeochemical characteristics of the water masses converge in the Strait of Gibraltar - Study of the flow of carbon greenhouse gases, methane and nitrous oxide from the Atlantic and Mediterranean and the processes involved in its regulation. - Evaluation of the exchange of CO2, CH4 and N2O ocean-atmosphere.

Get abundance indices of groundfish demersales species. Get the size structure of commercially exploited stocks. Collection of biological material. Prospecting deep zones. Get physical-chemical parameters of water in the study area.

GEOLOGY PROSPECTION OF THE SEA FLOOR

EVALUACION DE LA SENSIBILIDAD DEL BUCLE MICROBIANO AL IMPACTO DE MULTIPLES FACTORES EN ECOSISTEMAS ACUATICOS MEDITERRANEOS OBJETIVOS: De acuerdo con los planteados en el proyecto Microsens, los objetivos de la campaña serán los siguientes: 1. Cuantificar la biodiversidad de la comunidad planctónica, mediante la determinación de: 1.1 La abundancia y biomasa de bacterias y picoplancton autótrofo 1.2. La composición taxonómica, abundancia y biomasa de fitoplancton 1.3. La composición taxonómica, abundancia y biomasa de nanoflagelados y ciliados. 1.4. La composición taxonómica, abundancia y biomasa de micro y macrozooplancton. 2. Cuantificar el flujo de carbono entre los distintos grupos funcionales que constituyen el bucle microbiano y la cadena de consumidores, para lo cual se llevarán a cabo medidas de la producción primaria y respiración en diferentes fracciones del plancton 3. Determinar las respuestas funcionales y metabólicas de la comunidad planctónica ante cambios en el espectro de radiación solar y en la concentración de nutrientes mediante experimentos de micro-cosmos realizados a bordo.