Punctuated equilibrium behavior and Zipf's law in the stochastic branching process model of phylogeny

Takashi Matsumoto, Yoji Aizawa

Research output: Contribution to journalArticle

2 Citations (Scopus)


A stochastic branching process model of phylogeny with niche space and interactions among species s considered. For an intermediate interaction range, the time series of diversity has long periods of stasis divided by periods of rapid increase. The concept of monophyletic size is introduced, and it is shown that the size distribution obeys Zipf's law.

Original languageEnglish
Pages (from-to)909-915
Number of pages7
JournalProgress of Theoretical Physics
Issue number5
Publication statusPublished - 1999 Nov


ASJC Scopus subject areas

  • Physics and Astronomy(all)

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