Recr | R Documentation |
Recr
returns a biomass of recruited fish to the
population based on a stock-recruit relationship and some measure of
variation.
Recr(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 vector 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, "b" = 200), B = 1000, cv = 0.1)
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