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Catch function

Source: R/catch_func.R
catch_func.Rd

Internal function that does catch calculations for the preterminal and terminal marine fisheries.

Usage

catch_func(
  NO,
  HO,
  type = c("u", "catch"),
  U,
  K,
  V,
  MSF = FALSE,
  m = 1,
  release_mort = 0,
  p_mature_NO = array(1, dim(NO)),
  p_mature_HO = array(1, dim(HO)),
  AEQ_NO = array(1, dim(NO)),
  AEQ_HO = array(1, dim(HO))
)

Arguments

NO

Array [ns, nage, n_g] of natural-origin fish

HO

Array [ns, nage, n_r] of hatchery-origin fish

type

Character. Whether to calculate removals from harvest rate "u"or catch "catch"

U

Numeric or function. Harvest rate of fishery

K

Numeric or function. Total catch of the fishery

V

Matrix [ns, nage] Relative vulnerability by age class to fishery

MSF

Logical, whether fishing is mark-selective

m

Numeric vector length [ns], mark rate of hatchery-origin fish. Only used if MSF = TRUE.

release_mort

Numeric vector length [ns], proportion of released unmarked fish that die. Only used if MSF = TRUE.

p_mature_NO

Optional, array [ns, nage, n_g] of maturity for natural-origin fish. Only use to calculate adult equivalents escapement.

p_mature_HO

Optional, array [ns, nage, n_r] of maturity for hatchery-origin fish. Only use to calculate adult equivalents escapement.

AEQ_NO

Optional, array [ns, nage, n_g] of adult equivalents for natural-origin fish.

AEQ_HO

Optional, array [ns, nage, n_r] of adult equivalents for hatchery-origin fish.

Value

Named list:

  • K_NO kept natural-origin catch, same dimension as NO

  • K_HO kept hatchery-origin catch, same dimension as HO

  • D_NO discarded (live + dead) natural-origin catch, same dimension as NO

  • D_HO discarded (live + dead) hatchery-origin catch, same dimension as HO

  • DD_NO dead discarded natural-origin catch, same dimension as NO

  • DD_HO dead discarded hatchery-origin catch, same dimension as HO

  • Nsurv_NO natural-origin survivors, same dimension as NO

  • Nsurv_HO hatchery-origin survivors, same dimension as HO

  • U_NO natural-origin harvest rate (ratio of kept catch and abundance), vector ns

  • U_HO hatchery-origin harvest rate (ratio of dead catch and abundance), vector ns

  • Ex_NO natural-origin exploitation rate (ratio of dead catch and abundance), vector ns

  • Ex_HO hatchery-origin exploitation rate (ratio of dead catch and abundance), vector ns