Recr: Recruitment function

In pdolder/MixFishSim: Mixed Fishery fleet dynamics simulation tool

Recruitment function

Description

Recr returns a biomass of recruited fish to the population based on a stock-recruit relationship and some measure of variation.

Usage

Recr(model, params, B, cv, ..)

Arguments

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.

Value

returns the recruitment to the population in biomass.

Examples

Recr(model = 'BH', params = c("a" = 2000, "b" = 200), B = 1000, cv = 0.1)

pdolder/MixFishSim documentation built on Oct. 17, 2023, 4:25 p.m.