calc_predatorRecruits: Calculate Predator Recruits

In jcpayne/mice-models: Model of Intermediate Complexity for Ecosystem Assessment

Description

This function calls several utility functions to calculate predator recruits. In brief: 1) it calculates the number of breeding predator adults; 2) it calculates prey biomass; 3) it calculates the proportion of the prey biomass that is available to the predator, given a) the predator's diet preferences for prey species, b) the predator's preferences for certain age classes of those species, and c) the predator's ability to access the prey (spatial availability).

Usage

calc_predatorRecruits(Predator, preylist, y, ts, nSteps)

Arguments

Predator	A Predator object.
preylist	A list containing the Prey objects.
y	The current year.
ts	The current global timestep.
nSteps	The number of timesteps per year.

Value

A modified Predator object, with number of mature predators (Nm), predator recruits (Nmat[,t]) both set. As a convience for later graphing, the number of recruits is also set in the predator's @R slot, and Dy (total, scaled prey biomass) and BHp (Beverton-Holt maximum growth parameter) are also set.

See Also

Other recruitment: calc_B1P, calc_B_sp, calc_Bev_Holt, calc_Bprey_agepreferred, calc_Dy, calc_R_error, calc_Ricker, calc_availability, calc_other_R, calc_phi, calc_predRecruits_Punt, calc_preyRecruits, calc_p, calc_recruits

jcpayne/mice-models documentation built on May 18, 2019, 10:25 p.m.