Are large complex ecosystems more unstable? A theoretical reassessment with predator switching

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Multi-species Lotka-Volterra models exhibit greater instability with an increase in diversity and/or connectance. These model systems, however, lack the likely behavior that a predator will prey more heavily on some species if other prey species decline in relative abundance. We find that stability does not depend on diversity and/or connectance in multi-species Lotka-Volterra models with this 'predator switching'. This conclusion is more consistent with several empirical observations than the classic conclusion, suggesting that large complex ecosystems in nature may be more stable than previously supposed.

Original languageEnglish (US)
Pages (from-to)91-96
Number of pages6
JournalMathematical Biosciences
Volume163
Issue number1
DOIs
StatePublished - Jan 2000

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Predator
Ecosystem
Ecosystems
Unstable
Lotka-Volterra model
predator
predators
Lotka-Volterra Model
ecosystems
ecosystem
Predator-prey
Prey
relative abundance
Likely
Model

Keywords

  • Complexity
  • Lotka-Volterra
  • Predator switching
  • Stability

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Ecology, Evolution, Behavior and Systematics

Cite this

Are large complex ecosystems more unstable? A theoretical reassessment with predator switching. / Pelletier, Jon.

In: Mathematical Biosciences, Vol. 163, No. 1, 01.2000, p. 91-96.

Research output: Contribution to journalArticle

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