A function to calculate the total allowable catch (TAC). Based on the MSY (maximum sustainable yield) principle, the TAC is the product of either UMSY or FMSY and the available biomass, i.e. vulnerable biomass, in terminal year.
TAC_MSY(Assessment, reps, MSY_frac = 1)
A vector of length reps
of stochastic samples of TAC recommendation. Returns NA's
if missing either UMSY/FMSY or vulnerable biomass.
An Assessment object with estimates of UMSY or FMSY and terminal year vulnerable biomass.
The number of stochastic draws of UMSY or FMSY.
The fraction of FMSY or UMSY for calculating the TAC (e.g. MSY_frac = 0.75 fishes at 75% of FMSY).
HCR_MSY HCR40_10 HCR60_20