|Reference : Evolution on trees: a brief review about the extinctions of species, and the case of gen...|
|Scientific journals : Article|
|Physical, chemical, mathematical & earth Sciences : Physics|
|Evolution on trees: a brief review about the extinctions of species, and the case of genocide in a Darwinistic punctuated equilibrium evolution model|
|Ausloos, Marcel [Université de Liège - ULg > Département de physique > Physique statistique appliquée et des matériaux - S.U.P.R.A.S. >]|
|Kramer, M. [> >]|
|Vandewalle, Nicolas [Université de Liège - ULg > Département de physique > Physique statistique >]|
|Physica A: Statistical Mechanics and its Applications|
|Yes (verified by ORBi)|
|[en] Numerical and theoretical investigations of species evolution in presence of extinction rules are recalled in the framework of punctuated equilibrium evolution models. Previous results, on the Bak-Sneppen model are mentioned together with extensions taking into account a variable number of species. Conditions for limited growth due to species interactions, external fields, or intrinsic population density conditions have already been considered. An original genocide model is presented as a step towards describing effects due to the extinction of species. Critical exponents for (i) the avalanche distribution. (ii) the teady-state approach, and (iii) the tree size are given. A mean-field approximation is shown to be quite accurate for describing the critical state. The screening of species from the evolution process is not numerically studied.|
|Researchers ; Professionals ; Students|
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