Skip to contents

Calculate spawners after broodtake

Source: R/hatchery.R
calc_spawners.Rd

Internal function that calculates remaining spawners after broodtake and additional removals.

Usage

calc_spawners(broodtake, NO, HO, stray, phatchery, premove_HOS, premove_NOS, m)

Arguments

broodtake

List, returned by calc_broodtake()

NO

Matrix [nage, n_g], natural-origin in-river return

HO

Matrix [nage, n_r], hatchery-origin in-river return

stray

Matrix [nage, n_r], hatchery-origin strays in-river return

phatchery

Numeric, proportion of HO that return to hatchery instead of the spawning ground. HOB is taken from this subset. Set to NA to obtain HOB on the way to spawning ground.

premove_HOS

Numeric, proportion of HO fish to remove (after brood). Can also be a function

premove_NOS

Numeric, proportion of NO fish to remove (after brood). Can also be a function

m

Numeric, mark rate

Value

Named list:

  • NOS [nage, n_g] natural-origin spawners

  • HOS [nage, n_r] hatchery-origin spawners

  • HOS_stray [nage, n_r] spawners that are strays

  • NO_remove [nage, n_g] natural-origin fish removed before spawning

  • HO_remove [nage, n_r] hatchery-origin fish removed before spawning