Fadapt:
An adaptive MP that uses trajectory in inferred suplus production and fishing mortality rate to update a TAC
Description
Fishing rate is modified each year according to the gradient of surplus production with biomass (aims for zero). F is bounded by FMSY/2 and 2FMSY and walks in the logit space according to dSP/dB. This is derived from the theory of Maunder 2014.
Usage
Fadapt(x, DLM_data, reps = 100, yrsmth = 7, gg=1)
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
gg
A gain parameter controlling the speed in update in TAC.
Value
A numeric vector of quota recommendations
Details
Tested in Carruthers et al. 2015.
References
Carruthers et al. 2015. Performance evaluation of simple management procedures. Fish and Fisheries. In press.
Maunder. 2014. http://www.iattc.org/Meetings/Meetings2014/MAYSAC/PDFs/SAC-05-10b-Management-Strategy-Evaluation.pdf