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Population and Community Ecology of Ontogenetic Development$
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André M. de Roos and Lennart Persson

Print publication date: 2013

Print ISBN-13: 9780691137575

Published to Princeton Scholarship Online: October 2017

DOI: 10.23943/princeton/9780691137575.001.0001

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Life History Processes, Ontogenetic Development, and Density Dependence

Life History Processes, Ontogenetic Development, and Density Dependence

(p.24) Chapter Two Life History Processes, Ontogenetic Development, and Density Dependence
Population and Community Ecology of Ontogenetic Development

André M. de Roos

Lennart Persson

Princeton University Press

This chapter first considers the question of how ecologists have conceptualized populations. In other words, how has their research looked at “group[s] of individuals of one species”? It reflects on the classical models that form the theoretical basis of population ecology: the Lotka–Volterra competition model, Lotka–Volterra predator–prey model, and Fretwell–Oksanen food chain model. It then argues that much of ecologists' understanding about populations and communities and their dynamics is couched in terms of mathematical models. The remainder of the chapter discusses individual- versus population-level assumptions, the population dynamical triad, growth patterns and ecology of ontogenetic development, body-size scaling and magnitude of body-size changes, and changes in ecological roles over ontogeny.

Keywords:   ontogenetic niche shifts, interspecific competition, ecology, ecological dynamics, predators, coexistence

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