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	Provedor de dados ArchiMer (1) Autor Bravington, Mark V. (1) Lorance, Pascal (1) Trenkel, Verena (1) Tipo do documento Text (1) Ano 2012 (1) País France (1) Idioma Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 1 Primeira ... 1 ... Última A random effects population dynamics model based on proportions-at-age and removal data for estimating total mortality ArchiMer Trenkel, Verena; Bravington, Mark V.; Lorance, Pascal. Catch curves are widely used to estimate total mortality for exploited marine populations. The usual population dynamics model assumes constant recruitment across years and constant total mortality. We extend this to include annual recruitment and annual total mortality. Recruitment is treated as an uncorrelated random effect, while total mortality is modelled by a random walk. Data requirements are minimal as only proportions-at-age and total catches are needed. We obtain the effective sample size for aggregated proportion-at-age data based on fitting Dirichlet-multinomial distributions to the raw sampling data. Parameter estimation is carried out by approximate likelihood. We use simulations to study parameter estimability and estimation bias of four... Tipo: Text Ano: 2012 URL: http://archimer.ifremer.fr/doc/00130/24168/22506.pdf Registros recuperados: 1 Primeira ... 1 ... Última

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