Suppression of Ecological Competition by Apex Predator
Taksu Cheon, Shigemi Ohta

TL;DR
This paper demonstrates that a common predator can stabilize a two-species competitive system that would otherwise be unstable, using Lotka-Volterra models with evolutionary parameters.
Contribution
It introduces a model showing predator presence can suppress ecological competition and stabilize unstable species interactions.
Findings
Predator presence stabilizes competitive dynamics
Evolutionary parameter variation affects system stability
Game-theoretic implications are discussed
Abstract
In the framework of Lotka-Volterra dynamics with evolutionary parameter variation, it is shown that a system of two competing species which is evolutionarily unstable, if left to themselves, is stabilized by a commmon predator preying on both of them. Game-theoretic implications of the results are also discussed.
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