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A simple control rule that explicitly specifies the target apical F independent of any model.

Usage

HCR_fixedF(Assessment, reps = 1, Ftarget = 0.1)

Arguments

Assessment

An object of class Assessment with estimates of next year's abundance or biomass.

reps

The number of replicates of the TAC recommendation (not used).

Ftarget

The value of F.

Value

An object of class MSEtool::Rec with the TAC recommendation.

Details

The catch advice is calculated using the catch equation of the corresponding assessment. See Assessment@forecast$catch_eq, a function that returns the catch advice for a specified Ftarget.

See also

Author

Q. Huynh

Examples

# create an MP to run in closed-loop MSE (fishes at F = 0.2)
F0.2 <- make_MP(SP, HCR_fixedF, Ftarget = 0.2)

# \donttest{
myOM <- MSEtool::runMSE(MSEtool::testOM, MPs = c("FMSYref", "F0.2"))
#>  Checking OM for completeness
#>  Loading operating model
#>  Optimizing for user-specified movement
#>  Calculating MSY reference points for each year
#>  Optimizing for user-specified depletion in last historical year
#>  Calculating historical stock and fishing dynamics
#>  Calculating per-recruit reference points
#>  Calculating B-low reference points
#>  Calculating reference yield - best fixed F strategy
#>  Simulating observed data
#>  Running forward projections
#>  1 / 2  Running MSE for FMSYref 
#> 
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#> 
#>  2 / 2  Running MSE for F0.2 
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#> 
# }