Recr_mat | R Documentation |
Recr_mat
returns a matrix of spatially referenced
biomass of recruited fish to the population based on a stock-recruit
relationship and some measure of variation.
Recr_mat(model, params, B, cv, ..)
model |
is a character detailing the recruitment function to use (currently 'BH' for Beverton and Holt or 'Ricker' for a Ricker stock-recruit relationship. |
params |
is a Numeric vector of length 2, containing labelled a and b parameters for the stock-recruit function. For Beverton and Holt a refers to the maximum recruitment rate in biomass, b refers to the Spawning Stock Biomass (SSB) required to produce half the maximum. For Ricker a refers to the maximum productivity per spawner and b the density dependent reduction in productivity as the stock increases. |
B |
is a Numeric matrix containing the SSB of the adult population from which the recruitment derives. |
cv |
is a Numeric vector containing the coefficient of variation in the recruitment function. |
returns the recruitment to the population in biomass.
Recr(model = 'BH', params = c("a" = 2000/4, "b" = 200/4), B =
matrix(c(1000,2000,500,750), nc = 2), cv = 0.1)
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