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

Author

Summary, in 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.

Publishing year

2007

Language

English

Pages

354-357

Publication/Series

Behavioral Ecology

Volume

18

Issue

2

Document type

Journal article

Publisher

Oxford University Press

Topic

  • Biological Sciences
  • Ecology

Status

Published

Research group

  • Aquatic Ecology

ISBN/ISSN/Other

  • ISSN: 1045-2249