Gapped vegetation patterns: Crown/root allometry and snaking bifurcation

Jaime Cisternas, Daniel Escaff, Marcel G. Clerc, René Lefever, Mustapha Tlidi

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

When the level of aridity is increased, the uniform vegetation cover develops localized regions of lower biomass. These spatial structures are generically called vegetation gaps. They are embedded in a uniform vegetation cover. The spatial distribution of vegetation gaps can be either periodic or randomly distributed. We investigate the combined influence of the facilitative and the competitive nonlocal interactions between plants, and the role of crow/root allometry, on the formation of gapped vegetation patterns. We characterize first the formation of the periodic distribution of gaps by drawing their bifurcation diagram. We then characterize localized and aperiodic distributions of vegetation gaps in terms of their snaking bifurcation diagram.
Original languageAmerican English
JournalChaos, Solitons and Fractals
Volume133
DOIs
StatePublished - 1 Apr 2020

Keywords

  • Competitive interactions
  • Degradation of arid ecosystems
  • Nonlocal facilitation
  • Snaking bifurcation
  • Symmetry-breaking instabilities
  • Vegetation gaps
  • Vegetation patterns

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