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handle: 10261/189480
[ES] En Biología pesquera es interesante calcular densidades, o índices relacionados con ellas, de los peces existentes en el mar. Estas densidades nos permiten, bien estimar la cantidad total de peces en el mar, o bien calcular tasas de mortalidad, y de aquí efectos de la actividad pesquera sobre la producctividad de las poblaciones sometidas a explotación. [...]
[EN] In fisheries biology, the estimati of fish density is very important. When catch per unit of effort is used to estimate densities, diddiculties often arise, mainly in purse-seine fisheries. [...]
11 pages, 2 figures, 3 tables.-- Trabajo inédito presentado en el I Congreso de Zoología de Chile (Santiago de Chile, 1960)
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