Local frequency dependence and global coexistence.

Journal Article (Journal Article)

In sessile organisms such as plants, interactions occur locally so that important ecological aspects like frequency dependence are manifest within local neighborhoods. Using probabilistic cellular automata models, we investigated how local frequency-dependent competition influenced whether two species could coexist. Individuals of the two species were randomly placed on a grid and allowed to interact according to local frequency-dependent rules. For four different frequency-dependent scenarios, the results indicated that over a broad parameter range the two species could coexist. Comparisons between explicit spatial simulations and the mean-field approximation indicate that coexistence occurs over a broader region in the explicit spatial simulation.

Full Text

Duke Authors

Cited Authors

  • Molofsky, J; Durrett, R; Dushoff, J; Griffeath, D; Levin, S

Published Date

  • June 1999

Published In

Volume / Issue

  • 55 / 3

Start / End Page

  • 270 - 282

PubMed ID

  • 10366552

Electronic International Standard Serial Number (EISSN)

  • 1096-0325

International Standard Serial Number (ISSN)

  • 0040-5809

Digital Object Identifier (DOI)

  • 10.1006/tpbi.1998.1404


  • eng