BUSCADOR RECOLECTA

INTER Cruise (29GD19970215) carried out on the Research Vessel García del Cid in 1997, Interdisciplinary study of mesoscale instabilities and their interaction with local ,region and global circulation on the western Mediterranean. The existence of mesoscale instabilities and the position of the platform-slope front will be investigated, by means of an intensive sampling with simultaneous measurements of physical and biological parameters. Once selected some structures, their Langarian monitoring will be carried out and the evolution of the affected planktonic populations will be investigated. , to study the impact on its survival, with special interest in the first stages of growth of some species of fish and crustaceans characteristic of the area. A small scale study will be carried out in the frontal zone to investigate its border role of planktonic organisms . Campaign plan: A sampling network will be carried out with stations every 5 miles from the coastal zone to beyond the slope front, and data will be recorded continuously with thermosalinograph and ADCP. At each station the following works will be carried out; CTD / fluorometer and water intake with Rosette for nutrient data, concentration of chlorophyll and aromatic compounds in its particulate phase. Microzzoplankton sampling using vertical catches with 0.06 mm nets Macrozooplankton sampling by oblique fishing with 0.3 mm net mesh nets. Sampling of nuethonic macrozzoplankton using 0.8 mm nets To study the temporal viability and survival of species, it will be carried out by following drifting buoys. The buoys will be left in a place where a high concentration of eggs and larvae had been detected.Data analysis: - Laboratory analysis of petroleum and pyrogenic and nutrient hydrocarbons (nitrates, nitrites, phosphates and ammonium) on water samples - Separation in the laboratory of larvae of fish and other organisms of zooplankton. Measurement and extraction of otoliths of larvae of fish and the most abundant species. Biomass of microzzoplncton. -Identification of the different groups of zooplankton. Elaboration of density maps for different species. Spatial distribution certificates. Age of the larvae and monitoring of the cohorts. Analysis of the stomach contents of the fish larvae. -Analysis integrated physical and biological parameters