منابع مشابه
Fishery Stock Assessment Models
Historically, stock assessments of Atlantic blue marlin (Makaira nigricans) and white marlin (Tetrapturus albidus), conducted under the auspices of the International Commission for the Conservation of Atlantic Tunas (ICCAT), have been restricted to production modeling approaches. Production models are used due to the unique fisheries and biological aspects of the species which result in a pauci...
متن کاملApplication to fishery stock assessment
We consider a Monte Carlo Markov chain (MCMC) algorithm for fisheries stock assessment. The biomass of this stock at a given year could be modeled as a nonlinear function of the biomass and catch for the two previous years, of different parameters (recruitment, growth rate, natural mortality rate). Given a time series of annual catch and effort data, we would like to achieve the best fitting be...
متن کاملTropical Stock Assessment Packagesfor Programmable
Fishery biology, particularly the applied aspect of stock assessment, became a truly quantitative science in the mid-1950s, when the Beverton & Holt and Schaefer"workhorse" models for stock assessment were produced. Unfortunately, the computations involved in using either of these models and their variants and successors were generallyquite tedious. In the 1960s and early 1970s, various authors...
متن کاملTesting spatial heterogeneity with stock assessment models
This paper describes a methodology that combines meta-population theory and stock assessment models to gain insights about spatial heterogeneity of the meta-population in an operational time frame. The methodology was tested with stochastic simulations for different degrees of connectivity between sub-populations and applied to two case studies, North Sea cod (Gadus morua) and Northeast Atlanti...
متن کاملUpdate of Navarin walleye pollock stock assessment
Stock assessment model was so called effort-controlled version of the ISVPA-group of separable cohort models (for details of the model see appendix and references to it). This version of the model attributes residuals in cohort part of the model to errors in catch-at-age data, assuming that selection pattern (patterns) is stable. This version is often more robust for noisy catch-at-age data. Ad...
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ژورنال
عنوان ژورنال: International Journal of Aquaculture
سال: 2017
ISSN: 1927-5773
DOI: 10.5376/ija.2017.07.0024