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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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Mixed Interactions

Mixed Interactions

Chapter:
(p.253) Chapter 7 Mixed Interactions
Source:
Population and Community Ecology of Ontogenetic Development
Author(s):

André M. de Roos

Lennart Persson

Publisher:
Princeton University Press
DOI:10.23943/princeton/9780691137575.003.0007

This chapter discusses mixed interactions from a different perspective, taking as its point of departure the models for a structured prey, structured predator community with exclusive resources for both prey and predator that were analyzed in Chapter 6. For both the stage-structured biomass model and the size-structured model based on Kooijman–Metz energetics discussed in Chapter 6, it investigates how an increasing resource overlap between predators and consumers will change community structure and dynamics. The end point of such increasing resource overlap is a model in which consumers and predators compete for the same shared resource and adult predators feed partially or exclusively on juvenile, small-size consumers. This end point is close to the models analyzed by van de Wolfshaar, de Roos, and Persson (2006) and Hin, Schellekens, et al. (2011); the results will be discussed in the light of those publications.

Keywords:   niche overlaps, stage-structured prey, predators, size-structured prey ecology, ecological dynamics

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