Periodic oscillations in an ideal-free predator-prey distribution

S. Schwinning, Michael L Rosenzweig

Research output: Contribution to journalArticle

50 Citations (Scopus)

Abstract

Simulated the habitat selection behavior in a 3 population predator-prey system with a mid-level predator that is also prey. There were 2 habitats, one of which was a relative refuge from predation. Individuals moved to wherever they could improve their fitness, as if subject to the rules of the ideal-free distribution, but the 3 populations could generally not achieve 3 simultaneous ideal-free distributions. Instead, individuals shifted back and forth between the habitats. Such oscillations were stabilized in 3 ways: 1) increase in the protection provided by the refuge; 2) increase in intraspectific competition among the prey; 3) the presence of a threshold in fitness difference, below which individuals would not change habitats. In the presence of a threshold, population distributions became stable without having achieved a simultaneous ideal-free distribution. -Authors

Original languageEnglish (US)
Pages (from-to)85-91
Number of pages7
JournalOikos
Volume59
Issue number1
StatePublished - 1990

Fingerprint

ideal free distribution
oscillation
predator
predators
refuge
habitat
fitness
habitats
population distribution
habitat preferences
habitat selection
predation
distribution

ASJC Scopus subject areas

  • Ecology

Cite this

Periodic oscillations in an ideal-free predator-prey distribution. / Schwinning, S.; Rosenzweig, Michael L.

In: Oikos, Vol. 59, No. 1, 1990, p. 85-91.

Research output: Contribution to journalArticle

@article{eb151e92712245098df5723488a7f804,
title = "Periodic oscillations in an ideal-free predator-prey distribution",
abstract = "Simulated the habitat selection behavior in a 3 population predator-prey system with a mid-level predator that is also prey. There were 2 habitats, one of which was a relative refuge from predation. Individuals moved to wherever they could improve their fitness, as if subject to the rules of the ideal-free distribution, but the 3 populations could generally not achieve 3 simultaneous ideal-free distributions. Instead, individuals shifted back and forth between the habitats. Such oscillations were stabilized in 3 ways: 1) increase in the protection provided by the refuge; 2) increase in intraspectific competition among the prey; 3) the presence of a threshold in fitness difference, below which individuals would not change habitats. In the presence of a threshold, population distributions became stable without having achieved a simultaneous ideal-free distribution. -Authors",
author = "S. Schwinning and Rosenzweig, {Michael L}",
year = "1990",
language = "English (US)",
volume = "59",
pages = "85--91",
journal = "Oikos",
issn = "0030-1299",
publisher = "Wiley-Blackwell",
number = "1",

}

TY - JOUR

T1 - Periodic oscillations in an ideal-free predator-prey distribution

AU - Schwinning, S.

AU - Rosenzweig, Michael L

PY - 1990

Y1 - 1990

N2 - Simulated the habitat selection behavior in a 3 population predator-prey system with a mid-level predator that is also prey. There were 2 habitats, one of which was a relative refuge from predation. Individuals moved to wherever they could improve their fitness, as if subject to the rules of the ideal-free distribution, but the 3 populations could generally not achieve 3 simultaneous ideal-free distributions. Instead, individuals shifted back and forth between the habitats. Such oscillations were stabilized in 3 ways: 1) increase in the protection provided by the refuge; 2) increase in intraspectific competition among the prey; 3) the presence of a threshold in fitness difference, below which individuals would not change habitats. In the presence of a threshold, population distributions became stable without having achieved a simultaneous ideal-free distribution. -Authors

AB - Simulated the habitat selection behavior in a 3 population predator-prey system with a mid-level predator that is also prey. There were 2 habitats, one of which was a relative refuge from predation. Individuals moved to wherever they could improve their fitness, as if subject to the rules of the ideal-free distribution, but the 3 populations could generally not achieve 3 simultaneous ideal-free distributions. Instead, individuals shifted back and forth between the habitats. Such oscillations were stabilized in 3 ways: 1) increase in the protection provided by the refuge; 2) increase in intraspectific competition among the prey; 3) the presence of a threshold in fitness difference, below which individuals would not change habitats. In the presence of a threshold, population distributions became stable without having achieved a simultaneous ideal-free distribution. -Authors

UR - http://www.scopus.com/inward/record.url?scp=0025694182&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0025694182&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0025694182

VL - 59

SP - 85

EP - 91

JO - Oikos

JF - Oikos

SN - 0030-1299

IS - 1

ER -