maturity: Maturity at age

In vquennessen/densityratio: Using Density Ratios to Help Manage Fisheries In And Around Marine Reserves

Maturity at age

Description

maturity calculates the proportion of individuals at each age class, from age at recruitment to maximum age, that are expected to be mature.

Usage

maturity(Rec_age, Max_age, K_mat, L, L50)

Arguments

Rec_age	numeric value, the age at recruitment, in years.
Max_age	numeric value, the maximum age or total lifespan, in years.
K_mat	numeric value, the slope of the maturity curve.
L	numeric vector, the length at age vector, in cm.
L50	numeric value, the length at 50% maturity, in cm.

Value

a numeric vector of fraction mature at ages, from age at recruitment to maximum age, on the interval (0, 1).

Examples

L <- length_age(Rec_age = 2, Max_age = 35, A1 = 5, L1 = 32.21, A2 = 15,
   L2 = 47.95, K = 0.2022, All_ages = FALSE)
maturity(Rec_age = 2, Max_age = 35, K_mat = -0.4103, L, L50 = 39.53)

vquennessen/densityratio documentation built on Aug. 28, 2022, 5:36 p.m.