Estimation by acoustical methods stock biomass of anchovy (Engraulis encrasicolus) and sardine (Sardina pilchardus) Spanish Mediterranean.

Oceanographic survey collected in the framework of the following research project: - Métodos de Produccion de Huevos. Estimacion de la biomasa de especies pelagicas de interes comercial: sardina, anchoa, caballa y jurel (ICTIOEVA)-. This Project is funded by the Instituto Espanol de Oceanografia and the main scientific objective is to produce an index and a direct estimate of the biomass of the Gulf of Cadiz anchovy stock using the Daily Egg Production Method (DEPM). Specific aims: a) To estimate the spawning area distribution of anchovy and the daily and total egg production. b) To collect adults to obtain anchovy gonads for atresia and fecundity estimation c) Distribution and abundance of other commercial species of interest: sardine, horse mackerel 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

Estimation by acoustical methods stock biomass of anchovy (Engraulis encrasicolus) and sardine (Sardina pilchardus) Spanish Mediterranean.

A circumnavigation oceanographic expedition to generate a high resolution inventory of global change impact on the ecosystem of the ocean, researching its biodiversity in the deep.

The impact of trawling activity on a highly vulnerable habitat: the facies of Isidella elongata, a characteristic facies of Mediterranean deep sea communities, which is surprisingly a poorly known ecosystem.

This survey covers the international NAFO Regulation Area in divisions 3NO. It started in 1995 with the only purpose of collecting data for stock assessment of target species down to 700 m, but its aims and research area have widened with time. Currrently, the survey covers a depth range of 50-1500 m and its goals are the following: 1.Regarding the target species (Hippoglossoides platessoides, Limanda ferruginea, Reinhardtius hippoglossoides, Glyptocephalus cynoglossus, Gadus morhua, Sebastes sp, Macrourus berglax, Centroscyllium fabricii and Raja radiata) and other species of commercial interest (Urophycis tenuis; Pandalus borealis) : a) to obtain biomass and abundance indexes b) to estimate recruitment, c) to investigate the population structure To achieve this, biological information (length, weight, sex, maturity, stomach contents) is obtained from about 30 species, as well as otoliths and gonads from cod, Greenland halibut and roughead grenadier. The remaining fish and commercial invertebrate species are length measured and weighted. 2..Collection of oceanographic data (temperature, salinity, oxygen and fluorescence); 3.Invertebrate data collection: all species are identified to the maximum possible level on board, or otherwise photographed and preserved for later examination at the lab, counted and weighted, with the aim of investigating the benthic invertebrate faunal assemblage and presence of vulnerable species.

1:The trophic web structure in the bays of Málaga and Almería (Iberian coast, Alborán Sea) 2: The levels of eutrophication in the coastal strip between Delta del Ebro and Rosas (Iberian coast, NW Mediterranean).

A circumnavigation oceanographic expedition to generate a high resolution inventory of global change impact on the ecosystem of the ocean, researching its biodiversity in the deep.

According to European Regulation governing the collection and Management Program Core Data Fishery evaluate the abundance and distribution of stocks, regardless of the information from commercial fishing and the impact of fishing on the environment

Investigate the deep crustal structure of the Alboran sea