Average Catch with a size limit
AvC_MLL.RdA example mixed control MP that uses the average catch output control MP together with a minimul size limit set at the size of maturity.
AvC_MLL(x, Data, reps = 100, plot = FALSE)
Arguments
| x | A position in the data object |
|---|---|
| Data | A data object |
| reps | The number of stochastic samples of the MP recommendation(s) |
| plot | Logical. Show the plot? |
Value
An object of class Rec with the TAC, SL slot(s) populated
Details
The average catch method is very simple. The mean historical catch is calculated and used to set
a constant catch limit (TAC). If reps > 1 then the reps samples are drawn from a log-normal
distribution with mean TAC and standard deviation (in log-space) of 0.2.
For completeness, the TAC is calculated by:
$$\textrm{TAC} =\frac{\sum_{y=1}^{\textrm{n}}{C_y}}{\textrm{n}}$$
where \(\textrm{TAC}\) is the the mean catch recommendation, \(n\) is the number of historical years, and \(C_y\) is the catch in historical year \(y\).
The size of retention is set to the length of maturity.
This MP has been included for demonstration purposes of a mixed control MP.
Required Data
See Data for information on the Data object
AvC_MLL: Cat, LHYear, Year
Rendered Equations
See Online Documentation for correctly rendered equations
