Depletion Harvest Control Rule (HCR) — depletion.hcr • msemodules

Implements a depletion-based harvest control rule (HCR), adjusting harvest rates and TAC (Total Allowable Catch) based on stock status relative to depletion thresholds.

depletion.hcr(
  stk,
  ind,
  metric = "ssb",
  mult = 1,
  hrmsy,
  K,
  trigger = 0.4,
  lim = 0.1,
  min = 1e-05,
  dupp = NULL,
  dlow = NULL,
  all = TRUE,
  ...,
  args,
  tracking
)

Arguments

stk: FLStock. The stock object to which the HCR applies.
ind: FLQuant. The abundance index used as input for computing adjustments.
metric: Character or function. The metric applied to measure stock status. Default is 'ssb' (spawning stock biomass).
mult: Numeric. A scaling multiplier for adjusting the harvest rate. Default is 1.
hrmsy: Numeric. Harvest rate that achieves maximum sustainable yield (MSY