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DLMtool (version 4.4.1)

qopt: Internal optimization function that find the catchability (q where F=qE) value required to get to user-specified stock depletion (current biomass / unfished biomass)

Description

The user specifies the level of stock depleiton. This funciton takes the derived effort trajectories and finds the catchabiltiy to get the stock there.

Usage

qopt(lnq, depc, Fc, Perrc, Mc, hc, Mac, Wac, R0c, Vc, nyears, maxage, movc,
  Spat_targc, SRrelc, aRc, bRc, opt = T)

Arguments

lnq

internal parameter

depc

internal parameter

Fc

internal parameter

Perrc

internal parameter

Mc

internal parameter

hc

internal parameter

Mac

internal parameter

Wac

internal parameter

R0c

internal parameter

Vc

internal parameter

nyears

internal parameter

maxage

internal parameter

movc

internal parameter

Spat_targc

internal parameter

SRrelc

internal parameter

aRc

internal parameter

bRc

internal parameter

opt

internal parameter