Calculate the optimal pattern in fishing mortality

Uses a HARA model to calculate the optimal exploitation pattern

calculate_optimal_fishing(
  R0_m,
  steepness,
  Weight_Age_Mean,
  Maturity_at_Age,
  M_at_Age,
  Post_Spawning_Mortality,
  sel_at_age,
  opt_type = 1,
  utilpow = 0.3
)

Arguments

R0_m

The expected fraction of recruitment in each calendar month

steepness

The assumed steepness of the Beverton-Holt stock-recruitment function

Weight_Age_Mean

The mean weight-at-age

M_at_Age

The natural mortality-at-age schedule

sel_at_age

The selectivity-at-age schedule

opt_type

0 to maximize yield, 1 to maximize HARA utility

utilpow

Exponent of the HARA model

Maturit_at_Age

The maturity-at-age schedule

Post_Spawing_Mortality

The post-spawning mortality at age schedule

Value

A list