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Speciations and extinctions in a self-organizing critical model of tree-like evolution
Kramer, M.; Vandewalle, Nicolas; Ausloos, Marcel
1996In Journal de Physique, I, 6 (4), p. 599-606
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Abstract :
[en] We study analytically a simple model of a self-organized critical evolution. The model considers both extinction and speciation events leading to the growth of phylogenetic-like trees. Through a mean-field like theory, we study the evolution of the local configurations for the tree leaves. The fitness threshold, below which life activity takes place through avalanches of all sizes is calculated. The transition between speciating (evolving) and dead trees is obtained and is in agreement with numerical simulations. Moreover, this theoretical work suggests that the structure of the tree is strongly dependent on the extinction strength.
Disciplines :
Physics
Author, co-author :
Kramer, M.
Vandewalle, Nicolas  ;  Université de Liège - ULiège > Département de physique > Physique statistique
Ausloos, Marcel ;  Université de Liège - ULiège > Département de physique > Physique statistique appliquée et des matériaux - S.U.P.R.A.S.
Language :
English
Title :
Speciations and extinctions in a self-organizing critical model of tree-like evolution
Publication date :
April 1996
Journal title :
Journal de Physique, I
ISSN :
1155-4304
Publisher :
Les Editions de physique, France
Volume :
6
Issue :
4
Pages :
599-606
Peer reviewed :
Peer reviewed
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