Allopatry increases the balance of phylogenetic trees during radiation under neutral speciation
File(s)
Published version
Author(s)
Darcie Marquitti, Flavia Maria
Dias Fernandes, Lucas
de Aguiar, Marcus Alozio Martinez
Type
Journal Article
Abstract
The shape of a phylogenetic tree is defined by the sequence of speciation events, represented by its branching points, and extinctions, represented by branch interruptions. In a neutral scenario of parapatry and isolation by distance, species tend to branch off the original population one after the other, leading to highly unbalanced trees. In this case the degree of imbalance, measured by the normalized Sackin index, grows linearly with species richness. Here we claim that moderate values of imbalance for trees with large number of species can occur if the geographic distribution involves more than one deme (allopatry) and speciation is parapatric within demes. The combined values of balance (normalized Sackin index) and species richness provide an estimate of how many demes were involved in the process if it happened in such neutral scenario. We also show that the spatial division in demes moderately slows down the diversification process, portraying a neutral mechanism for structuring the branch length distribution of phylogenetic trees.
Date Issued
2020-10-01
Date Acceptance
2020-06-15
Citation
Ecography: pattern and diversity in ecology, 2020, 43 (10), pp.1487-1498
ISSN
0906-7590
Publisher
Wiley Open Access
Start Page
1487
End Page
1498
Journal / Book Title
Ecography: pattern and diversity in ecology
Volume
43
Issue
10
Copyright Statement
© 2020 The Authors. Ecography published by John Wiley & Sons Ltd on behalf of Nordic Society Oikos
This is an open access article under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/), which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
This is an open access article under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/), which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Identifier
https://onlinelibrary.wiley.com/doi/full/10.1111/ecog.04937
Subjects
0501 Ecological Applications
0502 Environmental Science and Management
0602 Ecology
Ecology
Publication Status
Published
Date Publish Online
2020-07-14