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原文連結
論文資訊
- 類型：已發表論文
- 日期：2009
摘要
We present a quantitative model for the 生物 演化 of 物種 body masses within large groups of related 物種, e.g., terrestrial mammals, in which body mass M evolves according to branching (speciation), multiplicative 擴散, and an extinction probability that increases logarithmically with mass. We describe this 演化 in terms of a convection-擴散-reaction equation for lnM. 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 物種 between 95-50 Myr ago.
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