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IEO/ Balearic Islands Oceanographic Centre
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Estimation by acoustical methods stock biomass of anchovy (Engraulis encrasicolus) and sardine (Sardina pilchardus) Spanish Mediterranean.
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Estimation by acoustical methods stock biomass of anchovy (Engraulis encrasicolus) and sardine (Sardina pilchardus) Spanish Mediterranean.
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The Algerian continental shelf, very narrow and rocky, is not conducive to bottom trawling. Its average length is 6 km, even in certain areas, the 500-meter isobath is 3 miles from the coast. Only in some gulfs in the west of the country (such as Oran), near the Alboran Sea, the platform reaches an extension above average. According to the Algerian Geographic Unit, it is estimated that only 1/3 of the surface is optimal for bottom trawling: 3,500 km2 up to 200 m depth and 7,000 km2 between 200 and 350 m. This limits the availability of demersal species and thus, rg / 1999 / xhtml "> of the total catches of these species (~ 25,000 Tm), about 4,000 (~ 20%) correspond to crustaceans, mainly prawns, which are caught between 200 and 400 m GOALS Determine the abundance and characteristics of the main demersal resources of Algeria. For this, the following partial objectives are proposed: - Know the biological structure of the communities exploited by the trawl fishery on the platform and the upper slope. - Obtain indices of abundance and biomass of the main species, such as mullet, sparids, hake, monkfish, white shrimp, Norway lobster, pink prawn, Moorish prawns, octopus and cuttlefish. - To determine the characteristics of the demographic structure of these species, as well as to know their geographical and bathymetric distribution. - Collect data on the state of maturity, size and weight, and collect biological samples of demersal species for growth and reproduction studies.
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Cr MAHON-III ref. B2945797.975 ICES created form
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Cr OBM-II ref B2945796.975 ICES created form
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LA FINALIDAD GLOBAL ES LA ELABORACION DE UN PROCESO EVOLUTIVO DE PLATAFORMA CONTINENTAL, DE CLIMA TEMPLADO Y DE CARACTER CARBONATADO, APLICABLE A OTROS DOMINIOS SEMEJANTES, ASI COMO A LA INTERPRETACION DEL REGISTRO FOSIL Y SU EVIDENTE REPERCUSION EN EL CAMPO DE LA GEOLOGIA APLICADA. PARA CONSEGUIR UN MODELO DE ESTAS CARACTERISTICAS, SE DEBEN SOLVENTAR DOS ASPECTOS BASICOS: 1.- PROCESOS Y FACTORES DE PRODUCION 2.- PROCESOS Y FACTORES DE ACUMULACION ESTE TIPO DE ESTUDIO MUESTA UN INTERES EXCEPCIONAL DEBIDO A LA ESCASEZ DE TRABAJOS SOBRE EL TEMA. DEBE REMARCARSE, ASI MISMO, EL ESPECIAL INTERES QUE PRESENTA LA CUENCA MEDITERRANEA BAJO MUY DIFERENTES ASPECTOS OCEANOGRAFICOS ENMARCADOS EN LAS VARIACIONES QUE PRESENTA EN CUANTO A COMPOSICION DINAMICA, SEDIMENTACION Y EVOLUCION.
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Cr OBM-III ref B2945799.975 ICES created form
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Cr OBM-IV ref B2945800.976 ICES created form
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Cr OBM-1 ref. B2945794.975 ICES created form
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Cr ROMB-1 Ref B2945789.978 ICES created form