calc_spawners: Calculate spawners after broodtake

In salmonMSE: Management Strategy Evaluation for Salmon Species

Calculate spawners after broodtake

Description

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

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