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Análisis de poblaciones virtuales modificado a partir de una aproximación a la ecuación de captura permitiendo una implementación numérica sencilla.

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Author
Hernández, D.R.
Mendiolar, M.
Date
2017

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Alternative Title
Virtual population analysis modified as a result of an approximation to the catch equation that allows a simple numerical implementation
Abstract
A modification to the Virtual Population Analysis as a result of an approximation to the catch equation that allows to avoid solving nonlinear equations in each cohort reconstruction process is presented. The relative errors obtained when estimating the fishing instantaneous mortality rate per age (maximum and mean in absolute value) remained lower than 1.4 percent within the M and F range values (natural instantaneous mortality rate and fishing instantaneous mortality rate) considered (0 menor o igual que M menor o igual que 1.2 y 0 menor o igual que F menor o igual que 2). The new method can be adapted to a particular situation (M and F range values) by simply solving an optimization problem (minimization of the maximum relative error absolute value) easily achieved using a calculation sheet or considering the approximation corresponding to any of the domains hereby analyzed.
Se presenta una modificación al Análisis de Poblaciones Virtuales a partir de una aproximación a la ecuación de captura que permite evitar resolver ecuaciones no lineales en el proceso de reconstrucción de cada cohorte. Los errores relativos obtenidos al estimar la tasa instantánea de mortalidad por pesca por edad (máximo y medio en valor absoluto) se mantuvieron inferiores al 1,4 por ciento dentro del rango de valores de M y F (tasa instantánea de mortalidad natural y tasa instantánea de mortalidad por pesca) considerados (0 minor or equal M minor or equal 1.2 y 0 minor or equal F minor or equal 2). El nuevo método puede adaptarse a una situación particular (rango de valores de M y F) resolviendo simplemente un problema de optimización (minimización del valor absoluto del error máximo relativo) que se logra fácilmente utilizando una planilla de cálculo o considerando la aproximación correspondiente a alguno de los dominios que aquí se analizan.
Journal
Revista de Investigación y Desarrollo Pesquero
Volume
30
Page Range
pp.89-103
URI
http://hdl.handle.net/1834/12711
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Revista de Investigación y Desarrollo Pesquero

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