Periodic travelling waves in cyclic predator-prey systems

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Abstract

Predation is an established cause of cycling in prey species. Here, the ability of predation to explain periodic travelling waves in prey populations, which have recently been found in a number of spatiotemporal field studies, is examined. The nature of periodic waves in these systems, and the way in which they can be generated by the invasion of predators into a prey population is discussed. A theoretical calculation that predicts, as a function of two parameter ratios, whether such an invasion will lead to a stable periodic travelling wave that would be observed in practice is presented - the alternative outcome is spatiotemporal chaos. The calculation also predicts quantitative details of the periodic waves, such as speed and amplitude. The results give new insights into the types of predator-prey systems in which one would expect to see periodic travelling waves following an invasion by predators.

Original languageEnglish
Pages (from-to)30-37
Number of pages8
JournalEcology Letters
Volume4
Issue number1
DOIs
Publication statusPublished - 2001

Keywords

  • Periodic waves
  • Population cycles
  • Predator-prey
  • Spatial synchrony

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