Make population — make_pop • anadrofish

Function used to seed initial age-structured population for simulation based on life-history characteristics. Uses an initial population seed, mortality estimates, and maximum age to create a starting population.

Usage

make_pop(species, max_age, nM, fM, n_init)

Arguments

species: Species for which population dynamics will be simulated. Choices include American shad ("AMS"), alewife ("ALE"), and blueback herring ("BBH").
max_age: The maximum age of fish in the population(s). A numeric vector of length 1.
nM: Instantaneous natural mortality rate. A numeric vector of length for AMS or a vector of length max_age for BBH and ALE.
fM: Instantaneous fishing mortality rate. A numeric vector of length 1.
n_init: Initial population abundance (includes all age classes).

Value

A vector containing age-specific abundances with length = max_age.

Examples

# Example usage
if (FALSE) { # \dontrun{
  
# Simulate a fish population at stable age distribution
  pop = make_pop(max_age, nM, fM, n_init)
  
} # }