catch_func: Catch function

In salmonMSE: Management Strategy Evaluation for Salmon Species

Catch function

Description

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

salmonMSE documentation built on Aug. 20, 2026, 5:09 p.m.