Monthly survey to study thermohaline and biological characterization of water masses in the East-North Atlantic.

Analyze and evaluate the environmental impact on the coastal area of Gibraltar caused by the dumping of concrete and rock blocks into the sea.

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.

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.

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.

To estimate the spawning stock biomass of european anchovy (Engraulis encrasicolus) in the Bay of Biscay in spring.

LASEA campain from project CGL2011-30302-C02 has the following objectives: Phase 1: Acquire bathymetric and seismic data from the gulf of Cadiz using acoustic echo sounders EM710, TOPAS and Sparker. Phase 2: Obtain sediment samples from the gulf of Cadiz and complementary bathymetric data.

The objective of the project RADIALES, formulated in 1990, aims at 'understanding and modelling the response of the marine ecosystem to the sources of temporal variability in oceanographic and planktonic components, particularly foccusing in those factors and processes affecting biological production and potentially altering the ecosystem services'. This project represents the oldest multidisciplinary ocean observation initiative still active in Spain.

1. Calibration and testing transducers noise due to the change of their location. 2. To estimate the abundance of the main pelagic fish (sardines, anchovies, mackerel, mackerel, etc.) by the method of echo integration in the northern Spanish coast and map their range. 3. Determine the main biological characteristics of target fish species: age structure and length, length / weight ratio and maturity stage from sampling biological sardine, anchovy, mackerel, horse mackerel, horse mackerel, chub mackerel, blue whiting and hake. 4. Determine the size structure of all fish species caught. 5. Estimate the TS / length ratio of the target species 6. To estimate the relative abundance and mapped the distribution of sardine and anchovy eggs. 7. Characterization of the hydrological conditions of the survey area, especially thermohaline properties of the waters over the continental shelf. Measurement of vertical profiles of temperature, salinity and fluorescence in stations (CTD Casts) and acquisition of continuous sea surface data (ttemperature, salinity and fluorescence). 8. Study of the relationship of oceanographic and meteorological conditions with distribution and abundance of sardine eggs and adults. 9. Determine the distribution patterns of taxonomic diversity and biomass different size classes of plankton (pico-, phyto- and zooplankton) in the study area. 10. Characterize the horizontal and vertical distribution of plankton. Mapping biomass plankton size classes 11. Plankton biomass estimation, fractional and total. Studying the relationship between ichthyoplankton and plankton. 12. Estimate the natural abundance of N15 in sardine, anchovy, mackerel, and krill and myctophids to determine their trophic position. 13. Mapping the abundance of top predators 14. Map the relative abundance of anthropogenic sea surface microplastic 15. Estimate the strength of recruitment of anchovy and other species in the Cantabrian.

Time series of oceanographic data in the Spanish Western Mediterranean