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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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Dynamics of Consumer-Resource Systems

Dynamics of Consumer-Resource Systems

Chapter:
(p.329) Chapter 9 Dynamics of Consumer-Resource Systems
Source:
Population and Community Ecology of Ontogenetic Development
Author(s):

André M. de Roos

Lennart Persson

Publisher:
Princeton University Press
DOI:10.23943/princeton/9780691137575.003.0009

This chapter focuses on consumer-resource dynamics in systems where consumers of different sizes compete for a shared resource. It considers the implications of three important aspects of consumer life history: the explicit handling of a juvenile period leading to a delay between the time when an individual is born to when it starts to reproduce; the rate by which individual ecological processes scale with body size; and whether the rate by which the individual grows is dependent on food density or not. The chapter examines the effects of different resource growth dynamics to illustrate the fundamental differences between population cycles driven by interactions between individuals of different sizes, and classical predator–prey cycles driven by interactions between the consumer and the resource, also referred to as paradox of enrichment cycles. It also discusses experiments with the model organism, the cladoceran zooplankton Daphnia, to elucidate our current understanding of cycles driven by cohort interactions in this organism.

Keywords:   consumer-resource dynamics, resource competition, consumer life history, ecology, ecological dynamics, cladoceran zooplankton, Daphnia

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