Invasion reversal by front transitions and their implications for ecosystem management

M. A. Ferré, J. J.R. Bennett, A. Novoplansky, E. Meron

Research output: Contribution to journalArticlepeer-review

Abstract

Alien species often become invasive by triggering the growth of pathogens that exert a strong negative effect on the native species. Using an extended Lotka–Volterra plant competition model that includes pathogen dynamics with a strong Allee effect we identify a bistability range of counter-propagating fronts representing invasion and recovery dynamics. The fronts differ in the levels of the pathogen in the front zone; high, beyond the Allee threshold for the invasion front and low, below that threshold for the recovery front. Invasion reversal is then studied as induced transitions from invasion fronts to recovery fronts. The study suggests managing invasion by local manipulations in the front zone that increase the Allee threshold and thereby reverse the front from invasion to recovery. We demonstrate numerically direct and indirect manipulations of this kind.

Original languageAmerican English
Article number112843
JournalChaos, Solitons and Fractals
Volume165
DOIs
StatePublished - 1 Dec 2022

Keywords

  • Allee effect
  • Front bifurcations
  • Invasion fronts
  • Invasion reversal
  • Pathogens

All Science Journal Classification (ASJC) codes

  • Applied Mathematics
  • Statistical and Nonlinear Physics
  • General Physics and Astronomy
  • Mathematical Physics
  • General Mathematics

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