Community Ecology

, Volume 7, Issue 1, pp 23–33 | Cite as

The effect of initial pattern on competitive exclusion

  • É. V. P. RáczEmail author
  • J. Karsai


We used cellular automata models to investigate the effect of initial pattern geometry on competition. We measured the average proportion of sites with foreign neighbours to track interspecific segregation during pattern development. Our simulation results show that intraspecific aggregation can considerably slow down the extinction of the weaker competitor. A series of experiments was performed to estimate the expected time to extinction for the weaker species. The perimeter-to-area ratio of the initial configuration proved to be an adequate determinant of expected time-to-extinction. Furthermore, we demonstrated that the degree of aggregation is closely related to the local density dependence of the colonization functions.


Cellular automata Colonization Competition Local aggregation Spatiotemporal pattern 



Cellular Automata


Interacting Particle System


Partial Differential Equation


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© Akadémiai Kiadó, Budapest 2006

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Authors and Affiliations

  1. 1.Department of Environmental EngineeringSzéchenyi István UniversityGyőrHungary
  2. 2.Department of Medical InformaticsUniversity of SzegedSzegedHungary

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