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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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Cannibalism in Size-Structured Systems

Cannibalism in Size-Structured Systems

(p.391) Chapter 11 Cannibalism in Size-Structured Systems
Population and Community Ecology of Ontogenetic Development

André M. de Roos

Lennart Persson

Princeton University Press

The previous two chapters discussed how the size scaling of foraging and metabolic rates affected the dynamics of consumer-resource systems. Using different modeling approaches, it was shown that stage-dependent competitive ability was the main predictor of population dynamics; that is, it largely set the conditions for different types of cycles to occur. This chapter adds another intraspecific interaction on top of the consumer-resource system, namely, cannibalism. It uses a discrete-continuous population-level model based on individual-level net-production energetics to investigate the effects of cannibalism. The focus will be on the effects of cannibalism on population dynamics related to four processes that have been discussed in the literature regarding cannibalism: effects on mortality, competition, energy gain, and the size dependence of interactions.

Keywords:   foraging, metabolic rates, consumer-resource systems, cannibalism, ecological dynamics, population dynamics, mortality, competition, energy gain, size dependence

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