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Branch Lengths on Birth–Death Trees and the Expected Loss of Phylogenetic Diversity

Diversification is nested, and early models suggested this could lead to a great deal of evolutionary redundancy in the Tree of Life. This result is based on a particular set of branch lengths produced by the common coalescent, where pendant branches leading to tips can be very short compared with b... Full description

Journal Title: Systematic biology 2012-03-01, Vol.61 (2), p.195-203
Main Author: Mooers, Arne
Other Authors: Gascuel, Olivier , Stadler, Tanja , Li, Heyang , Steel, Mike
Format: Electronic Article Electronic Article
Language: English
Subjects:
Quelle: Alma/SFX Local Collection
Publisher: England: Oxford University Press
ID: ISSN: 1063-5157
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recordid: cdi_hal_primary_oai_HAL_lirmm_00715445v1
title: Branch Lengths on Birth–Death Trees and the Expected Loss of Phylogenetic Diversity
format: Article
creator:
  • Mooers, Arne
  • Gascuel, Olivier
  • Stadler, Tanja
  • Li, Heyang
  • Steel, Mike
subjects:
  • Biodiversity
  • Bioinformatics
  • Censorship
  • Classification - methods
  • Computer Science
  • Evolution
  • Extinct species
  • extinction
  • Genetic diversity
  • Life Sciences
  • Mass extinction events
  • Models, Biological
  • phylogenetic diversity
  • Phylogenetic tree
  • Phylogenetics
  • Phylogeny
  • Plant growth
  • Quantitative Methods
  • Speciation
  • Species extinction
  • Steels
  • Systematic biology
  • Systematics
  • Systematics, Phylogenetics and taxonomy
  • Taxa
  • Taxonomy
  • Yule process
ispartof: Systematic biology, 2012-03-01, Vol.61 (2), p.195-203
description: Diversification is nested, and early models suggested this could lead to a great deal of evolutionary redundancy in the Tree of Life. This result is based on a particular set of branch lengths produced by the common coalescent, where pendant branches leading to tips can be very short compared with branches deeper in the tree. Here, we analyze alternative and more realistic Yule and birth-death models. We show how censoring at the present both makes average branches one half what we might expect and makes pendant and interior branches roughly equal in length. Although dependent on whether we condition on the size of the tree, its age, or both, mese results hold both for the Yule model and for birth–death models with moderate extinction. Importantly, the rough equivalency in interior and exterior branch lengths means that the loss of evolutionary history with loss of species can be roughly linear. Under these models, the Tree of Life may offer limited redundancy in the face of ongoing species loss.
language: eng
source: Alma/SFX Local Collection
identifier: ISSN: 1063-5157
fulltext: fulltext
issn:
  • 1063-5157
  • 1076-836X
url: Link


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descriptionDiversification is nested, and early models suggested this could lead to a great deal of evolutionary redundancy in the Tree of Life. This result is based on a particular set of branch lengths produced by the common coalescent, where pendant branches leading to tips can be very short compared with branches deeper in the tree. Here, we analyze alternative and more realistic Yule and birth-death models. We show how censoring at the present both makes average branches one half what we might expect and makes pendant and interior branches roughly equal in length. Although dependent on whether we condition on the size of the tree, its age, or both, mese results hold both for the Yule model and for birth–death models with moderate extinction. Importantly, the rough equivalency in interior and exterior branch lengths means that the loss of evolutionary history with loss of species can be roughly linear. Under these models, the Tree of Life may offer limited redundancy in the face of ongoing species loss.
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languageeng
publisherEngland: Oxford University Press
subjectBiodiversity ; Bioinformatics ; Censorship ; Classification - methods ; Computer Science ; Evolution ; Extinct species ; extinction ; Genetic diversity ; Life Sciences ; Mass extinction events ; Models, Biological ; phylogenetic diversity ; Phylogenetic tree ; Phylogenetics ; Phylogeny ; Plant growth ; Quantitative Methods ; Speciation ; Species extinction ; Steels ; Systematic biology ; Systematics ; Systematics, Phylogenetics and taxonomy ; Taxa ; Taxonomy ; Yule process
ispartofSystematic biology, 2012-03-01, Vol.61 (2), p.195-203
rights
0Copyright © 2012 Society of Systematic Biologists
1The Author(s) 2011. Published by Oxford University Press, on behalf of the Society of Systematic Biologists. All rights reserved. For Permissions, please email: journals.permissions@oup.com 2012
2Distributed under a Creative Commons Attribution 4.0 International License
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descriptionDiversification is nested, and early models suggested this could lead to a great deal of evolutionary redundancy in the Tree of Life. This result is based on a particular set of branch lengths produced by the common coalescent, where pendant branches leading to tips can be very short compared with branches deeper in the tree. Here, we analyze alternative and more realistic Yule and birth-death models. We show how censoring at the present both makes average branches one half what we might expect and makes pendant and interior branches roughly equal in length. Although dependent on whether we condition on the size of the tree, its age, or both, mese results hold both for the Yule model and for birth–death models with moderate extinction. Importantly, the rough equivalency in interior and exterior branch lengths means that the loss of evolutionary history with loss of species can be roughly linear. Under these models, the Tree of Life may offer limited redundancy in the face of ongoing species loss.
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abstractDiversification is nested, and early models suggested this could lead to a great deal of evolutionary redundancy in the Tree of Life. This result is based on a particular set of branch lengths produced by the common coalescent, where pendant branches leading to tips can be very short compared with branches deeper in the tree. Here, we analyze alternative and more realistic Yule and birth-death models. We show how censoring at the present both makes average branches one half what we might expect and makes pendant and interior branches roughly equal in length. Although dependent on whether we condition on the size of the tree, its age, or both, mese results hold both for the Yule model and for birth–death models with moderate extinction. Importantly, the rough equivalency in interior and exterior branch lengths means that the loss of evolutionary history with loss of species can be roughly linear. Under these models, the Tree of Life may offer limited redundancy in the face of ongoing species loss.
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