title: How do nonreproductive groups affect population growth?
abstract: I describe several models of population dynamics, both unstructured and gender structured, that include groups of individuals who do not reproduce. I analyze the effect that the nonreproductive group may have on the dynamics of the whole population in terms of the vital rates and the proportion of nonreproductive individuals, and we provide specific examples for real populations.
authors.affiliation: Department of Mathematics, Purdue University, 150 North University Street, West Lafayette, IN 47907-2067. milner@purdue.edu. URL: http://www.math.purdue.edu/~milner.
authors.forename: Fabio Augusto
authors.initials: FA
authors.lastname: Milner