Description Usage Arguments Details Value Functions Required Data Rendered Equations Author(s) References See Also Examples
A surplus production equivalent of DBSRA that uses a demographically derived prior for intrinsic rate of increase (McAllister method, below)
1 2 3 
x 
A position in a datalimited methods data object 
Data 
A datalimited methods data object 
reps 
The number of stochastic samples of the MP recommendation(s) 
plot 
Logical. Show the plot? 
The TAC is calculated as:
\textrm{TAC} = K D \frac{r}{2}
where K is estimated unfished biomass, D is depletion, and r is the estimated intrinsic rate of increase.
Like all SRA methods, this MP requires a timeseries of catch extending from the beginning of exploitation.
An object of class Rec
with the TAC
slot populated with a numeric vector of length reps
SPSRA
: Base version. Requires an estimate of current depletion
SPSRA_ML
: Variant that uses a meanlength mortality estimator to obtain
a prior for current stock depletion.
See Data for information on the Data
object
SPSRA
: Cat, Dep, FMSY_M, L50, MaxAge, Mort, steep, vbK, vbLinf, vbt0, wla, wlb
SPSRA_ML
: CAL, Cat, Dep, FMSY_M, L50, Lbar, Lc, MaxAge, Mort, steep, vbK, vbLinf, vbt0, wla, wlb
See Online Documentation for correctly rendered equations
T. Carruthers
McAllister, M.K., Pikitch, E.K., and Babcock, E.A. 2001. Using demographic methods to construct Bayesian priors for the intrinsic rate of increase in the Schaefer model and implications for stock rebuilding. Can. J. Fish. Aquat. Sci. 58: 18711890.
Other Surplus production MPs: Fadapt
,
Rcontrol
, SPMSY
,
SPmod
, SPslope
1 2  SPSRA(1, DLMtool::SimulatedData, plot=TRUE)
SPSRA_ML(1, DLMtool::SimulatedData, plot=TRUE)

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