Natural mortality at length

Constructs a vector of natural mortality values at age based on length, using a length-based allometric relationship.

Usage

get_M_length(min_age, max_age, age_increase_M, m0, m30, length_mu_ysa)

Arguments

min_age

Numeric scalar. Minimum model age.

max_age

Numeric scalar. Maximum model age.

age_increase_M

Numeric scalar. Age at which M begins to increase again (currently unused in function).

m0

Numeric scalar. Natural mortality rate at age 1 and 2.

m30

Numeric scalar. Natural mortality rate at age 30 (terminal age M, currently unused in function).

length_mu_ysa

Numeric array. Mean length by year, season, and age with dimensions [n_year, n_season, n_age].

Value

A numeric vector of length max_age - min_age + 1 containing natural mortality rates at each age.