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arXiv 0808.4014q-bio.PEphysics.bio-phphysics.data-an
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物种体质量多样性的演化模型

Evolutionary Model of Species Body Mass Diversification

Aaron Clauset, Sidney Redner

摘要:

我们提出了一个定量模型的生物进化的物种身体质量在大组的相关物种,例如,陆栖哺乳动物,其中体重M根据分支(物种形成)、倍增扩散和随质量递增的灭绝概率而进化。我们描述这种演变的对流扩散反应方程ln M。稳态行为与最近的陆生哺乳动物的经验数据非常一致,时间依赖行为也与9500万至5000万年前灭绝的哺乳动物物种的数据一致。

英文摘要:

We present a quantitative model for the biological evolution of species body masses within large groups of related species, e.g., terrestrial mammals, in which body mass M evolves according to branching (speciation), multiplicative diffusion, and an extinction probability that increases logarithmically with mass. We describe this evolution in terms of a convection-diffusion-reaction equation for ln M. The steady-state behavior is in good agreement with empirical data on recent terrestrial mammals, and the time-dependent behavior also agrees with data on extinct mammal species between 95 - 50 Myr ago.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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