salmonMSE (version 0.1.0)

calc_phi: 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")
)

Value

Numeric, units depend on "output" argument

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