Threshold Fishing Mortality Harvest Control Rule

Return an allowable fishing mortality rate based on a threshold (hockey-stick) harvest control rule, using spawning stock biomass (SSB) as the input.

threshold_f_hcr(fmax, fmin, urp, lrp, naa, dem_params)

Arguments

fmax

maximum F to apply

fmin

minimum F to apply

urp

SSB level above which fmax is applied

lrp

SSB level below which fmin is applied

naa

numbers-at-age vector (used to internally compute SSB)

dem_params

demographic parameters (used to internally compute SSB)

Value

F as defined by SSB and the provided reference points