Persistence in discrete age-structured population models

Abstract

Survival analyses of populations are developed in dicrete growth processes. Persistence and extinction atributes of age-structured discrete population models are explored on both a finite and infinite time horizon. Conditions for persistence and extinction are found. Decompositions of the initial population size axes into intervals where populations are persistent at time N and intervals leading to extinction at time n, where n ⩽ N, are given for two age class discrete population models.