| DTe40 {DLMtool} | R Documentation |
Effort searching MP aiming for a fixed stock depletion
Description
Effort is adjusted using a simple rule that aims for a specified level of depletion.
Usage
DTe40(x, Data, reps = 100, plot = FALSE, alpha = 0.4, LB = 0.9, UB = 1.1)
DTe50(x, Data, reps = 100, plot = FALSE, alpha = 0.5, LB = 0.9, UB = 1.1)
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? |
alpha |
The target level of depletion |
LB |
The lowest permitted factor of previous fishing effort |
UB |
The highest permitted factor of previous fishing effort |
Details
The TAE is calculated as:
\textrm{TAE}_y = \frac{D}{\alpha} \textrm{TAE}_{y-1}
where D is estimated current level of depletion and \alpha is argument
alpha specifying the target level of depletion.
The maximum fractional change in TAE is specified with arguments LB and UB
Value
An object of class Rec-class with the TAE slot(s) populated
Functions
-
DTe40: Effort is adjusted to reach 40 percent stock depletion -
DTe50: Effort is adjusted to reach 50 percent stock depletion
Required Data
See Data-class for information on the Data object
DTe40: Dep, MPeff
Rendered Equations
See Online Documentation for correctly rendered equations
Author(s)
T. Carruthers
Examples
DTe40(1, MSEtool::Atlantic_mackerel, plot=TRUE)