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	Provedor de dados OceanDocs (2) Autor Bogazzi, E. (2) Burgos, G. (1) Hernandez, D.R. (1) Lasta, M.L. (1) Lucifora, L.O. (1) Valero, J. (1) Mais... Palavra-chave Scallop fisheries (2) Abundance (1) Biomass (1) Catch/effort (1) Fishery surveys (1) Fishing effort (1) Fishing grounds (1) Fishing vessels (1) Http://aims.fao.org/aos/agrovoc/c_24027 (1) Http://aims.fao.org/aos/agrovoc/c_24251 (1) Http://aims.fao.org/aos/agrovoc/c_2947 (1) Http://aims.fao.org/aos/agrovoc/c_2954 (1) Http://aims.fao.org/aos/agrovoc/c_926 (1) Oceanic fronts (1) Stock assessment (1) Mais... Tipo do documento Journal Contribution (1) Theses and Dissertations (1) Ano 2008 (1) 2001 (1) País Belgium (2) Idioma Espanhol (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última El proceso de pesca en la explotación de la vieira patagónica (Zygochlamys patagonica) y las respuestas espacio-temporales de las poblaciones OceanDocs Bogazzi, E.. Several attributes of populations of sedentary organisms differentiate benthic fisheries from those approached by the classic theory, inspired by fin-fisheries. The assessment and management of sedentary resources require the application of non-conventional methodological tools. Understanding the fishing process, in particular, is central to the analysis and management of those fisheries. The purpose of this thesis was to investigate the fishing process and its impact on stocks of the Patagonian scallop (Zygochlamys patagonica) fishery. Data and information utilized included: (i) historical data from commercial vessels and experimental fishing; (ii) positional, catch and effort data, and additional information corresponding to fleet activity between 1995... Tipo: Theses and Dissertations Palavras-chave: Scallop fisheries; Stock assessment; Fishing vessels; Catch/effort; Fishing effort; Fishing grounds; Oceanic fronts; Stock assessment; Fishing vessels; Fishing effort; Fishing grounds; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_2954; Http://aims.fao.org/aos/agrovoc/c_24027; Http://aims.fao.org/aos/agrovoc/c_2947. Ano: 2008 URL: http://hdl.handle.net/1834/2996 Uso de técnicas geoestadísticas en la estimación de la abundancia de vieira patagónica (Zygochlamys patagonica). OceanDocs Lasta, M.L.; Hernandez, D.R.; Bogazzi, E.; Burgos, G.; Valero, J.; Lucifora, L.O.. To evaluate absolute biomass, a research cruise was conducted on three scallop (Zygochlamys patagonica)beds (38°S-56°W, September 1998). The estimated bed surface was 1,162 nm(2). Sampling stations were regularly spaced at 5 nm intervals. A total of 118 trawls were performed with a non-selective dredge 2,5 m wide (efficiency 16-21. ). Trawls duration and speed were 10 minutes and 3 nm.h(-1)respectively. Samples were taken to estimate total and commercial (greater or equal than 55 mm total height)scallop weight and size frequency distribution. Coefficients of variation (CV)of the estimated biomass were calculated for each bed using geoestatistical techniques and a simple random sampling alternative with the same number of samples. The CVs for total scallop... Tipo: Journal Contribution Palavras-chave: Fishery surveys; Scallop fisheries; Biomass; Abundance; Biomass; Http://aims.fao.org/aos/agrovoc/c_926. Ano: 2001 URL: http://hdl.handle.net/1834/1870 Registros recuperados: 2 Primeira ... 1 ... Última

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