DLMtool (version 3.2)

LstepCE1: A management procedure that incrementally adjusts the TAC according to the mean length of recent catches.

Description

A effort-based version of least biologically precautionary of four adaptive length-based MPs proposed by Geromont and Butterworth 2014. Tested by Carruthers et al. 2015

Usage

LstepCE1(x, DLM_data, reps = 100, yrsmth = 5, xx = 0, stepsz = 0.05,  llim = c(0.96, 0.98, 1.05))

Arguments

x

A position in data-limited methods data object

DLM_data

A data-limited methods data object

reps

The number of effort samples

yrsmth

Years over which to smooth recent estimates of surplus production

xx

Parameter controlling the fraction of mean catch to start using in first year

stepsz

Parameter controlling the size of the effort update increment.

llim

A vector of length reference points that determine the conditions for increasing, maintaining or reducing the effort.

Value

A numeric vector of input controls