hcr_management_bio: Biomass-based Harvest Control Rule

In einarhjorleifsson/mac: Miscalaneous set of functions related fish stock assessment work

Description

The Biomass-based HCR is used in the case of the Icelandic cod and saithe. Here it is implemented such that the TAC next year is a multiplier of the target harvest rate and the observed reference biomass (i.e. that includes observation errrors).

If the Btrigger is set in the rule (Btrigger > 0) then linear reductions of fishing mortality is done relative to observed spawning stock biomass (i.e. that includes observation errrors).

Usage

hcr_management_bio(y, h, bio, ssb, ctr)

Arguments

y	XXX
h	XXX
bio	vector Observed reference biomass.
ssb	vector Observed spawning stock biomass.
ctr	XXX

Note

To do: Modify function so that buffer is not active below Btrigger and also to a EU type TAC-constraint.

einarhjorleifsson/mac documentation built on May 16, 2019, 1:29 a.m.