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	Provedor de dados OceanDocs (3) Autor Herdson, D. (3) Martínez, J. (3) Rodríguez, W. (3) Palavra-chave Demersal fisheries (2) Http://aims.fao.org/aos/agrovoc/c_2173 (2) Abundance (1) Artisanal fishing (1) Biomass (1) Catch composition (1) Continental shelves (1) Exploitation (1) Geographical distribution (1) Http://aims.fao.org/aos/agrovoc/c_1384 (1) Http://aims.fao.org/aos/agrovoc/c_32413 (1) Http://aims.fao.org/aos/agrovoc/c_5083 (1) Http://aims.fao.org/aos/agrovoc/c_5659 (1) Http://aims.fao.org/aos/agrovoc/c_926 (1) Pelagic fisheries (1) Yield predictions (1) Mais... Tipo do documento Journal Contribution (3) Ano 1985 (3) País Belgium (3) Idioma Espanhol (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Los recursos de peces demersales de la Plataforma Continental del Ecuador. Parte uno. Distribución, abundancia y variaciones OceanDocs Herdson, D.; Rodríguez, W.; Martínez, J.. A survey of demersal fish resources of the Continental Shelf of Ecuador was carried out between October 1980 an July 1985 by the National Fisheries Institute of Ecuador, with British Technical Cooperation. This report deals with the stock assessment part of the work. In the course of seven cruises, 366 valid diurnal hauls were made with a high-opening bottom trawl. The demersal fish resources were estimated by swept area methods and the results are presented. The overall average standing stock of demersal fish was 78 000 t of which 22 000 t was good fish, but 36 000 t were gurnards (Triglidae) and 3 000 t of unusable fish. The main stocks were gurnards, grunts and croakers, sharks and corvinas Cynoscion spp. The southern areas especially the Gulf of... Tipo: Journal Contribution Palavras-chave: Demersal fisheries; Geographical distribution; Abundance; Biomass; Demersal fisheries; Geographical distribution; Biomass; Http://aims.fao.org/aos/agrovoc/c_2173; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_926. Ano: 1985 URL: http://hdl.handle.net/1834/3228 Las pesquerías artesanales de la costa del Ecuador y sus capturas en el año 1982 OceanDocs Herdson, D.; Rodríguez, W.; Martínez, J.. A study was carried out the white fish landings made by the artisanal fisheries in mainland Ecuador in 1982. There were four main groups of landings: the fishery for large pelagic fish, the demersal longline fishery on hard grounds; the set net fisheries for corvina and other medium and large bottom fish and the landings of shrimp by-catch. The fishes caught and their nomenclature; the gears used, the vessels and the fishing communities are briefly described. The landings of with fish by these fisheries in 1082 are given and discussed. The total landings were between 15.000 t and 20.000 t. Of this about 40% was large pelagic fish; 20-30% shrimp by-catch, 20% good quality demersal fish and 10% shark. It should be possible to increase the landings in some... Tipo: Journal Contribution Palavras-chave: Artisanal fishing; Catch composition; Pelagic fisheries; Catch composition; Pelagic fisheries; Http://aims.fao.org/aos/agrovoc/c_1384; Http://aims.fao.org/aos/agrovoc/c_5659. Ano: 1985 URL: http://hdl.handle.net/1834/3225 Los recursos demersales de la Plataforma Continental del Ecuador. Parte dos. Producción potencial y recomendaciones para la utilización del recurso de pesca blanca en el Ecuador OceanDocs Herdson, D.; Rodríguez, W.; Martínez, J.. The stock estimates obtained during the demersal fish resources survey in 1980-1985 were used to estimate the potential yields of demersal stocks of the Ecuadorian Continental Shelf. The difficulties of predicting yields for multispecies fisheries are discussed and modified version of the Gulland model was adopted. The potential realizable yields for multispecies fisheries are discussed and a modified version of the Gulland model was adopted. The potential realizable yield was calculated to be between 15,000 t and 20,000 t per year, of which 2,000 t is good quality fish, 5,000 t per year of small and medium fish and 8,000 t of gurnards. The majority of these resources are at present being fished at around their optimum levels and any further developments... Tipo: Journal Contribution Palavras-chave: Demersal fisheries; Continental shelves; Yield predictions; Exploitation; Demersal fisheries; Continental shelves; Http://aims.fao.org/aos/agrovoc/c_2173; Http://aims.fao.org/aos/agrovoc/c_32413. Ano: 1985 URL: http://hdl.handle.net/1834/3227 Registros recuperados: 3 Primeira ... 1 ... Última

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