Predator-class: An S4 parent class for Predators.

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

Description

Inherits from Species and has slots for values that are common to predators but not prey.

Value

Should not be instantiated; rather, instantiate the child classes.

Slots

sp_prefs

list. Prey species preferences (one list element per prey species).

age_prefs

list. A vector of predator preferences for prey age classes; one list element for each prey species.

omegas

list. Parameters that scale available prey biomass per species so they sum (roughly) to 1

prey_availability

list. Parameters used in model of spatial availability (one set per prey species in list elements named for the prey species. May also be used to store data for graphing availability.)

prey_effect

list. Parameters for the model that determines how much of an impact prey biomass has on predator recruitment

D0

numeric. The available, scaled total prey biomass in unfished condition. A scalar.

Dy

numeric. Available, scaled total prey biomass; a vector (time).

Fmax

numeric. Maximum fecundity (population lambda, from data).

bigPhi

numeric. Scaling parameter for reproduction.

phi

numeric. Sensitivity of predator reproduction to prey biomass

BHp

numeric. Beverton-Holt p parameter, which is affected by prey; a vector (time).

Mo

numeric. Maximum number of offspring; a scalar.

Nm

numeric. Number of mature predators; a vector (time).

N1P

numeric. Number of age-1+ predators; a vector (time).

K1P

numeric. Number of age-1+ predators when prey are unfished

NperK

numeric. Number of age-1+ predators per age-1+ predators when prey are unfished.

RperS

numeric. Recruits per spawner; a vector (time).

RperS_Punt

numeric. Recruits per spawner (Punt method); a vector (time).

See Also

parent class Species

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