Maury Olivier, Faugeras Blaise, Restrepo V. (2005). FASST : a fully age-size and space-time structured statistical model for the assessment of tuna populations. In :
International Commission for the Conservation of Atlantic Tunas = Commission Internationale pour la Conservation des Thonidés de l'Atlantique = Comision Internacional para la Conservacion del Atun Atlantico. Madrid : ICCAT, 206-217. (Collective Volume of Scientific Papers ; 54 - SCRS/2001/046).
Titre du document
FASST : a fully age-size and space-time structured statistical model for the assessment of tuna populations
Année de publication
2005
Type de document
Partie d'ouvrage
Auteurs
Maury Olivier, Faugeras Blaise, Restrepo V.
In
International Commission for the Conservation of Atlantic Tunas = Commission Internationale pour la Conservation des Thonidés de l'Atlantique = Comision Internacional para la Conservacion del Atun Atlantico
Source
Madrid : ICCAT, 2005,
206-217 (Collective Volume of Scientific Papers ; 54 - SCRS/2001/046).
This paper describes the model FASST. FASST is a fully structured age, size, space and time stock assessment model. It is expressed as a deterministic system of partial differential equations continuous in age, size and time. Sp ace is represented using large discrete zones interconnected by exchange rates. All the parameterizations used to represent recruitment, growth, mortality and movements are chosen to be size-dependent and age independent. Consequently, for simplicity purposes, the age dimension can be simplified. The model is integrated numerically to simulate the stock dynamics. A complex process -and observation-error framework is used to estimate the model parameters, and hence the past stock status, in a Bayesian context. The model uses simultaneousl y most fishery data currently available for tuna stock assessment such as catch by fleet in number and weight, length-frequency samples, otolith analysis, tag-recapture data. It provides a new way to integrate that information into a consistent stock assessment framework.
