Oceanographyc survey collected in the framework of theSTOCA and INGRES3 projects. 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.

Acoustic survey, conducted with an annual periodicity, to assess and map the small- and mid-sized pelagic (neritic) species¿ resources and the oceanographic and biological conditions of the Gulf of Cadiz continental shelf (both Spanish and Portuguese waters, ICES Subdivision IXa South, from Cape Trafalgar to Cape San Vicente, between 20 and 200 m depth). 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 (at a 10-knot speed). Biological characterization of the pelagic community is sampled by opportunistic pelagic trawls (for identification of echo-traces), which are also performed during the day (at a 4-knot speed). 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 through census techniques. Oceanographic characterization of the surveyed area from both discrete (CTD profiles in night stations) and continuous sampling (Thermosalinometer-fluorimeter) coupled to the CUFES sampling. This year, ad hoc Bongo 40 stations arranged in two additional transects were also carried out in order to characterize the ichthyoplankton and mesozooplankton species assemblages in the eastern sector of the study area (Guadalquivir river mouth-Trafalgar) and their relationships with environmental conditions.

Multidisciplinary campaing for mooring instruments and adquiring samples and variables to: * Know the thermohaline, kinematic, dynamic and biological characteristics of the Gulf of Cadiz. * Study of carbon fluxes between the Atlantic and Mediterranean. * Linking climatology, hydrology and hydrodynamics and the early stages of development of the species associated with the platform, with a focus on species of fishing interest. * Provide data to feed global and regional numerical models. * Generate and distribute a database to know the evolution of marine climate and its resources.

1. Estimation de l¿abondance de les poissons pélagiques par echointegration de les eaux côtières sud de l¿Europe. 2. Cartographie de l¿are de distribution. 3. Estimation de la abondance des ouefs par enregistrementg en continue. 4. Etalonnage entre l¿enregistrement en continue des ouefs et les classiques estations avec Pairovet. 5. Estimation de la biomasse fractionée (Mèthode CHN) de plankton. 6. Etude de les conditions oceanographiques et méteorologiques et sa rélation avec la distribution et abondance des oeufs et adultes des poissons pélagiques. 7. Hydrologie: Charactesisation des propietés termohalines des eaux sur le plateau continental. Mesure de profiles verticales de température, salinité et fluorescende dans des stations et acquisition de données de surface (thermosalinometrie, fluorescence, métèorologie). 8. Placton: Détermination des patrons de distribution de la diversité taxonomique et de la biomasse en différent classes de taille du plancton (phyto et zooplancton) dans la zone d¿étude. 9. Cartographie de l'abondance des prédateurs

1. Estimation de l¿abondance de les poissons pélagiques par echointegration de les eaux côtières sud de l¿Europe. 2. Cartographie de l¿are de distribution. 3. Estimation de la abondance des ouefs par enregistrementg en continue. 4. Etalonnage entre l¿enregistrement en continue des ouefs et les classiques estations avec Pairovet. 5. Estimation de la biomasse fractionée (Mèthode CHN) de plankton. 6. Etude de les conditions oceanographiques et méteorologiques et sa rélation avec la distribution et abondance des oeufs et adultes des poissons pélagiques. 7. Hydrologie: Charactesisation des propietés termohalines des eaux sur le plateau continental. Mesure de profiles verticales de température, salinité et fluorescende dans des stations et acquisition de données de surface (thermosalinometrie, fluorescence, métèorologie). 8. Placton: Détermination des patrons de distribution de la diversité taxonomique et de la biomasse en différent classes de taille du plancton (phyto et zooplancton) dans la zone d¿étude. 9. Cartographie de l'abondance des prédateurs

Oceanographic survey collected in the framework of the PESCADIZ and STOCA projects. PESCADIZ is funded by the Instituto Español de Oceanografía / 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.