calc_phi: Calculate equilibrium quantities with life history groups

In salmonMSE: Management Strategy Evaluation for Salmon Species

Calculate equilibrium quantities with life history groups

Description

Calculate eggs/smolt or spawners/smolt based on life history parameters (survival, maturity, fecundity)

Usage

calc_phi(
  Mjuv,
  p_mature,
  p_female,
  fec,
  s_enroute = 1,
  n_g = 1,
  p_LHG,
  output = c("egg", "spawner")
)

Arguments

Mjuv	Matrix ⁠[maxage, n_g]⁠, but can be a vector if n_g = 1. Juvenile natural mortality
p_mature	Matrix ⁠[maxage, n_g]⁠, but can be a vector if n_g = 1. Maturity at age
p_female	Numeric. Proportion female
fec	Matrix ⁠[maxage, n_g]⁠, but can be a vector if n_g = 1. Fecundity at age. Only used if output = "egg"
s_enroute	Numeric, en-route survival of escapement to spawning grounds
n_g	Integer. Number of life history groups
p_LHG	Vector length n_g of proportion of life history groups per recruit. Default is rep(1/n_g, n_g)
output	Character to indicate the output units, e.g., "egg" returns eggs per smolt, and "spawner" returns spawners per smolt

Value

Numeric, units depend on "output" argument

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