arXiv: Populations and Evolution | VOL. 5845
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Fluctuations in models of biological macroevolution

Publication Date Feb 28, 2005

Abstract

Fluctuations in diversity and extinction sizes are discussed and compared for two different, individual-based models of biological coevolution. Both models display power-law distributions for various quantities of evolutionary interest, such as the lifetimes of individual species, the quiet periods between evolutionary upheavals larger than a given cutoff, and the sizes of extinction events. Time series of the diversity and measures of the size of extinctions give rise to flicker noise. Surprisingly, the power-law behaviors of the probability densities of quiet periods in the two models differ, while the distributions of the lifetimes of individual species are the same.

Concepts
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Quiet Periods
Models Of Coevolution
Sizes Of Events
Fluctuations In Sizes
Quantities Of Interest
Diversity Sizes
Models Of Biological Coevolution
Biological Macroevolution
Biological Coevolution
Flicker Noise

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