Islope1: A management procedure that incrementally adjusts the TAC to maintain a
Description
The least biologically precautionary of two constant index / CPUE methods
proposed by Geromont and Butterworth 2014. Tested by Carruthers et al. 2015Usage
Islope1(x, DLM_data, reps = 100, yrsmth = 5, lambda=0.4,xx=0.2)
Arguments
x
A position in data-limited methods data object
DLM_data
A data-limited methods data object
reps
The number of TAC samples
yrsmth
Years over which to smooth recent estimates of surplus
production
lambda
A gain parameter controlling the speed in update in TAC.
xx
Parameter controlling the fraction of mean catch to start using in
first year
Value
A numeric vector of quota recommendationsDetails
Tested by Carruthers et al. 2015.References
Carruthers et al. 2015. Performance review of simple management
procedures. Fish and Fisheries. In press. Geromont, H.F., Butterworth, D.S. 2014. Generic management procedures for
data-poor fisheries; forecasting with few data. ICES J. Mar. Sci.
doi:10.1093/icesjms/fst232