MSEtool (version 2.0.1)

HCR_MSY: Harvest control rule to fish at some fraction of maximum sustainable yield

Description

A simple control rule that specifies the total allowable catch (TAC) to be the product of current vulnerable biomass and UMSY.

Usage

HCR_MSY(Assessment, reps = 1, MSY_frac = 1, ...)

Arguments

Assessment

An object of class '>Assessment with estimates of FMSY or UMSY and vulnerable biomass in terminal year.

reps

The number of stochastic samples of the TAC recommendation.

MSY_frac

The fraction of FMSY or UMSY for calculating the TAC (e.g. MSY_frac = 0.75 fishes at 75% of FMSY).

...

Miscellaneous arguments.

Value

An object of class '>Rec with the TAC recommendation.

References

Punt, A. E, Dorn, M. W., and Haltuch, M. A. 2008. Evaluation of threshold management strategies for groundfish off the U.S. West Coast. Fisheries Research 94:251-266.

See Also

make_MP HCR_ramp

Examples

# NOT RUN {
# create an MP to run in closed-loop MSE (fishes at UMSY)
DD_MSY <- make_MP(DD_TMB, HCR_MSY)
class(DD_MSY)

# The same MP which fishes at 75% of UMSY
DD_75MSY <- make_MP(DD_TMB, HCR_MSY, MSY_frac = 0.75)
class(DD_MSY)

# }
# NOT RUN {
myOM <- DLMtool::runMSE(DLMtool::testOM, MPs = c("FMSYref", "DD_MSY"))
# }