computeFbrp {FLRef}R Documentation

computeFbrp() Computes biological reference points corresponding to the proxy Fbrp

Description

computeFbrp() Computes biological reference points corresponding to the proxy Fbrp

Usage

computeFbrp(
  stock,
  sr = "missing",
  proxy = NULL,
  x = NULL,
  blim = 0.1,
  type = c("b0", "btrg", "value"),
  btri = "missing",
  bpa = "missing",
  verbose = T,
  fmax = 5
)

Arguments

stock

object of class FLStock

sr

stock recruitment model of class FLSR

x

basis in percent for sprx and bx, e.g. 40 for spr40

blim

values < 1 are taken as fraction to B0 and blim > 1 as absolute values unless specified otherwise

type

type of blim input, values < 1 are

  • "b0" fraction to B0

  • "btrg" fraction to Btarget (first occurring in proxy)

  • "value" absolute value

btri

Btrigger can specified as absolute value

bpa

Bpa can specified as absolute value

verbose
fmax

maximum Flim = max(Flim,fmax*Fbrp)

proxies

choice of Fmsy proxies (combinations permitted)

  • "sprx" spawning potential ratio spr/spr0 with basis x

  • "bx" SSB as fraction xSSB0

  • "f0.1" 10

  • "msy" maximum surplus production (not defined for segreg)

Value

brp object of class FLBRP with computed Fbrp reference points

Examples

data(ple4)
srr = srrTMB(as.FLSR(ple4,model=rickerSV),spr0=spr0y(ple4))
brp = computeFbrp(stock=ple4,sr=srr,proxy=c("sprx","f0.1"),blim=0.1,type="b0")
ploteq(brp,obs=TRUE,refpts="msy")
[Package FLRef version 1.0.6 Index]