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Competition on the Rocks: Community Growth and Tessellation

Jettestuen, Espen; Nermoen, Anders; Hestmark, Geir; Timdal, Einar; Mathiesen, Joachim
Journal article, Peer reviewed
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URI
http://hdl.handle.net/11250/2367505
Date
2010
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  • Institutt for fysikk [1759]
  • Publikasjoner fra CRIStin - NTNU [19849]
Original version
PLoS ONE 2010, 5(9)   10.1371/journal.pone.0012820
Abstract
Crustose lichen communities on rocks exhibit fascinating spatial mosaics resembling political maps of nations or municipalities. Although the establishment and development of biological populations are important themes in ecology, our understanding of the formation of such patterns on the rocks is still in its infancy. Here, we present a novel model of the concurrent growth, establishment and interaction of lichens. We introduce an inverse technique based on Monte Carlo simulations to test our model on field samples of lichen communities. We derive an expression for the time needed for a community to cover a surface and predict the historical spatial dynamics of field samples. Lichens are frequently used for dating the time of exposure of rocks in glacial deposits, lake retreats or rock falls. We suggest our method as a way to improve the dating.
Publisher
Public Library of Science
Journal
PLoS ONE

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