Calculate the fishing mortality that maximizes the maximum sustainable yield (Fmsy) with fixed steepness parameters (h) in the Bevertoh-Holt stock-recruitment relationship.

Calcu_Fmsy calculates the fishing mortality that maximizes the maximum sustainable yield (Fmsy) with fixed steepness parameters (h).

Usage

Calcu_Fmsy(M, Sel, w, g, A = 6, method, F_max = 10, alpha, beta, method_SR)

Arguments

M

A vector of natural mortality rate at age a. The length should be A+1.

Sel

A vector of selectivity at age a. The length should be A+1.

w

A vector of weight at age a. The length should be A+1.

g

A vector of maturity at age a. The length should be A+1.

A

Plus group age. Default is 6.

method

Method of the fishing equation. Either "Baranov" or "Pope" is allowed.

F_max

Maximum value of F values to be searched for determining Fmsy.

alpha

Estimated Parameter alpha in the Beverton-Holt stock recruitment relationship.

beta

Estimated Parameter beta in the Beverton-Holt stock recruitment relationship.

Value

A value of the F that maximizes the yield per recruit.