Neutral biodiversity theory can explain the imbalance of phylogenetic trees but not the tempo of their diversification

T. Jonathan Davies*, Andrew P. Allen, Luís Borda-de-Água, Jim Regetz, Carlos J. Melián

*Corresponding author for this work

Research output: Contribution to journalArticle

46 Citations (Scopus)

Abstract

Numerous evolutionary studies have sought to explain the distribution of diversity across the limbs of the tree of life. At the same time, ecological studies have sought to explain differences in diversity and relative abundance within and among ecological communities. Traditionally, these patterns have been considered separately, but models that consider processes operating at the level of individuals, such as neutral biodiversity theory (NBT), can provide a link between them. Here, we compare evolutionary dynamics across a suite of NBT models. We show that NBT can yield phylogenetic tree topologies with imbalance closely resembling empirical observations. In general, metacommunities that exhibit greater disparity in abundance are characterized by more imbalanced phylogenetic trees. However, NBT fails to capture the tempo of diversification as represented by the distribution of branching events through time. We suggest that population-level processes might therefore help explain the asymmetry of phylogenetic trees, but that tree shape might mislead estimates of evolutionary rates unless the diversification process is modeled explicitly.

Original languageEnglish
Pages (from-to)1841-1850
Number of pages10
JournalEvolution
Volume65
Issue number7
DOIs
Publication statusPublished - Jul 2011

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