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DLMtool (version 5.0.2)

L95target: A management procedure that adjusts the TAC up/down from reference (target) level (that is a fraction of mean recent premanagement catches) to reach a target mean length of fish caught.

Description

This MP is based on Ltarget1 proposed by Geromont and Butterworth 2014, but here the target and limit mean lengths are based on the length at maturity distribution rather than an arbitrary multiplicative of the mean length.

Usage

L95target(x, Data, reps = 100, yrsmth = 5, buffer=0)

Arguments

x

A position in data-limited methods data object

Data

A data-limited methods data object

reps

The number of TAC samples

yrsmth

Years over which to calculate the mean historical catch

buffer

Parameter controlling the fraction of mean catch to set the reference (or target) TAC level - acts as a precautionary buffer

Value

A numeric vector of TAC recommendations

References

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