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Behavioral interference and facilitation in the foraging cycle shape the functional response

Author:
  • Anders Nilsson
  • Per Lundberg
  • Christer Brönmark
  • Anders Persson
  • Håkan Turesson
Publishing year: 2007
Language: English
Pages: 354-357
Publication/Series: Behavioral Ecology
Volume: 18
Issue: 2
Document type: Journal article
Publisher: Oxford University Press

Abstract english

Individual forager behaviors should affect per capita intake rates and thereby population and consumer-resource properties. We consider and incorporate conspecific facilitation and interference during the separate foraging-cycle stages in a functional response model that links individual behavioral interactions with consumer-resource processes. Our analyses suggest that failing to properly consider and include all effects of behavioral interactions on foraging-cycle stage performances may either over- or underestimate effects of interactions on the shape of both functional responses and predator zero-growth isoclines. Incorporation of prey- and predator-dependent interactions among foragers in the model produces predator isoclines with potentials for highly complex consumer-resource dynamics. Facilitation and interference during the foraging cycle are therefore suggested as potent behavioral mechanisms to cause patterns of community dynamics. We emphasize that correct estimations of interaction-mediated foraging-cycle efficiencies should be considered in empirical and theoretical attempts to further our understanding of the mechanistic link between social behaviors and higher order processes.

Keywords

  • Biological Sciences
  • Ecology

Other

Published
  • ISSN: 1045-2249
Anders Nilsson
E-mail: anders [dot] nilsson [at] biol [dot] lu [dot] se

Professor

Aquatic ecology

+46 46 222 83 65

+46 70 346 25 66

E-D130

50

Research group

Aquatic Ecology

Projects

Doctoral students and postdocs

Main supervisor

Varpu Pärssinen

Assistant supervisor

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