Speciational view of macroevolution: are micro and macroevolution decoupled?

Details Speciational view of macroevolution: are micro and macroevolution decoupled? Speciational view of macroevolution: are micro and macroevolution decoupled?

2005-09-24

arxiv.org/abs/q-bio/0509032v2

Biology

Quantitative Biology

Populations and Evolution

Europhys. Lett. 75:342--348

Scientific paper

10.1209/epl/i2006-10095-7

We introduce a simple computational model that, with a microscopic dynamics driven by natural selection and mutation alone, allows the description of true speciation events. A statistical analysis of the so generated evolutionary tree captures realistic features showing power laws for frequency distributions in time and size. Albeit these successful predictions, the difficulty in obtaining punctuated dynamics with mass extinctions suggests the necessity of decoupling micro and macro-evolutionary mechanisms in agreement with some ideas of Gould's and Eldredge's theory of punctuated equilibrium.

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