Discards of the Spanish fleet in ICES Divisions
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AuthorsPérez-Contreras, M.N. (María Nélida); Pereda, P. (Pilar); Uriarte, A. (Andrés); Trujillo-Gorbea, V. (Valentín); Olaso-Toca, L.I. (Luis Ignacio); Lens, S. (Santiago)
KeywordsCommercial and non-commercial species discards
Sea turtles and sea birds
Objectives: 1. To estimate the discards of commercial and non-commercial species, including pinnipeds, cetaceans, sea turtles and sea birds, incidentally caught by different fishing gears of the Spanish fleets in ICES Divisions. 2. To estimate of the total volume and/or number discarded by fleet in each ICES Division by scaling-up the results of the sampling programme using data on the fishing effort. 3. To obtain the size composition of the most significant species of discards of different fisheries unit. 4. To evaluate of the causes of discard procedures per fleet. 5. To evaluate of the impact of the fishing activity in each fishery unit in relation to the total biomass catches. Methodologies : A discard sampling programme, taking place during the year 1994, was applied based on stratified random sampling by fisheries unit. Fishing gears used were, Trawl, Long Line, Gill Net, and Purse Seine in the ICES Subareas: VI, VII, VIII and IX . Discards volume of all taxa, including ...
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