Chowdhury, Debashish ; Stauffer, Dietrich ; Kunwar, Ambarish (2003) Unification of small and large time scales for biological evolution: deviations from power law Physical Review Letters, 90 (6). 068101_1-068101_4. ISSN 0031-9007
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Official URL: http://link.aps.org/doi/10.1103/PhysRevLett.90.068...
Related URL: http://dx.doi.org/10.1103/PhysRevLett.90.068101
Abstract
We develop a unified model that describes both "micro" and "macro" evolutions within a single theoretical framework. The ecosystem is described as a dynamic network; the population dynamics at each node of this network describes the "microevolution" over ecological time scales (i.e., birth, ageing, and natural death of individual organisms), while the appearance of new nodes, the slow changes of the links, and the disappearance of existing nodes accounts for the "macroevolution" over geological time scales (i.e., the origination, evolution, and extinction of species). In contrast to several earlier claims in the literature, we observe strong deviations from power law in the regime of long lifetimes.
Item Type: | Article |
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Source: | Copyright of this article belongs to American Physical Society. |
ID Code: | 7875 |
Deposited On: | 25 Oct 2010 09:56 |
Last Modified: | 25 Oct 2010 09:56 |
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