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On the Biogeography of Centipeda: A Species-Tree Diffusion Approach

Reconstructing the biogeographic history of groups present in continuous arid landscapes is challenging due to the difficulties in defining discrete areas for analyses, and even more so when species largely overlap both in terms of geography and habitat preference. In this study, we use a novel appr... Full description

Journal Title: SYSTEMATIC BIOLOGY 2014-03-01, Vol.63 (2), p.178-191
Main Author: Nylinder, Stephan
Other Authors: Lemey, Philippe , De Bruyn, Mark , Suchard, Marc A , Pfeil, Bernard E , Walsh, Neville , Anderberg, Arne A
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_swepub_primary_oai_gup_ub_gu_se_189286
title: On the Biogeography of Centipeda: A Species-Tree Diffusion Approach
format: Article
creator:
  • Nylinder, Stephan
  • Lemey, Philippe
  • De Bruyn, Mark
  • Suchard, Marc A
  • Pfeil, Bernard E
  • Walsh, Neville
  • Anderberg, Arne A
subjects:
  • Animals
  • Arid zones
  • Asteraceae - classification
  • Asteraceae - genetics
  • Australia
  • BEAST
  • Biogeography
  • Biological Sciences
  • Biological Systematics
  • Biological taxonomies
  • Biologisk systematik
  • Biologiska vetenskaper
  • Botanik
  • Botany
  • Centipeda
  • continuous diffusion
  • Correlation analysis
  • Dispersal
  • Diversity of life
  • DNA, Ribosomal Spacer - genetics
  • Estimated taxes
  • Evolution
  • Evolutionary Biology
  • Evolutionsbiologi
  • Geography
  • Habitats
  • Livets mångfald
  • Mathematical minima
  • Natural Sciences
  • Naturvetenskap
  • Phylogeny
  • Phylogeography
  • Pliocene
  • Regular
  • Regular Articles
  • Speciation
  • Species
  • species tree
  • Taxa
  • Trees
ispartof: SYSTEMATIC BIOLOGY, 2014-03-01, Vol.63 (2), p.178-191
description: Reconstructing the biogeographic history of groups present in continuous arid landscapes is challenging due to the difficulties in defining discrete areas for analyses, and even more so when species largely overlap both in terms of geography and habitat preference. In this study, we use a novel approach to estimate ancestral areas for the small plant genus Centipeda. We apply continuous diffusion of geography by a relaxed random walk where each species is sampled from its extant distribution on an empirical distribution of time-calibrated species-trees. Using a distribution of previously published substitution rates of the internal transcribed spacer (ITS) for Asteraceae, we show how the evolution of Centipeda correlates with the temporal increase of aridity in the arid zone since the Pliocene. Geographic estimates of ancestral species show a consistent pattern of speciation of early lineages in the Lake Eyre region, with a division in more northerly and southerly groups since ~ 840 ka. Summarizing the geographic slices of species-trees at the time of the latest speciation event (~ 20 ka), indicates no presence of the genus in Australia west of the combined desert belt of the Nullabor Plain, the Great Victoria Desert, the Gibson Desert, and the Great Sandy Desert, or beyond the main continental shelf of Australia. The result indicates all western occurrences of the genus to be a result of recent dispersal rather than ancient vicariance. This study contributes to our understanding of the spatiotemporal processes shaping the flora of the arid zone, and offers a significant improvement in inference of ancestral areas for any organismal group distributed where it remains difficult to describe geography in terms of discrete areas.
language: eng
source: Alma/SFX Local Collection
identifier: ISSN: 1063-5157
fulltext: fulltext
issn:
  • 1063-5157
  • 1076-836X
  • 1076-836X
url: Link


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titleOn the Biogeography of Centipeda: A Species-Tree Diffusion Approach
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creatorNylinder, Stephan ; Lemey, Philippe ; De Bruyn, Mark ; Suchard, Marc A ; Pfeil, Bernard E ; Walsh, Neville ; Anderberg, Arne A
creatorcontribNylinder, Stephan ; Lemey, Philippe ; De Bruyn, Mark ; Suchard, Marc A ; Pfeil, Bernard E ; Walsh, Neville ; Anderberg, Arne A ; Naturvetenskapliga fakulteten ; Faculty of Sciences ; Department of Biological and Environmental Sciences ; Göteborgs universitet ; Institutionen för biologi och miljövetenskap ; Gothenburg University
descriptionReconstructing the biogeographic history of groups present in continuous arid landscapes is challenging due to the difficulties in defining discrete areas for analyses, and even more so when species largely overlap both in terms of geography and habitat preference. In this study, we use a novel approach to estimate ancestral areas for the small plant genus Centipeda. We apply continuous diffusion of geography by a relaxed random walk where each species is sampled from its extant distribution on an empirical distribution of time-calibrated species-trees. Using a distribution of previously published substitution rates of the internal transcribed spacer (ITS) for Asteraceae, we show how the evolution of Centipeda correlates with the temporal increase of aridity in the arid zone since the Pliocene. Geographic estimates of ancestral species show a consistent pattern of speciation of early lineages in the Lake Eyre region, with a division in more northerly and southerly groups since ~ 840 ka. Summarizing the geographic slices of species-trees at the time of the latest speciation event (~ 20 ka), indicates no presence of the genus in Australia west of the combined desert belt of the Nullabor Plain, the Great Victoria Desert, the Gibson Desert, and the Great Sandy Desert, or beyond the main continental shelf of Australia. The result indicates all western occurrences of the genus to be a result of recent dispersal rather than ancient vicariance. This study contributes to our understanding of the spatiotemporal processes shaping the flora of the arid zone, and offers a significant improvement in inference of ancestral areas for any organismal group distributed where it remains difficult to describe geography in terms of discrete areas.
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subjectAnimals ; Arid zones ; Asteraceae - classification ; Asteraceae - genetics ; Australia ; BEAST ; Biogeography ; Biological Sciences ; Biological Systematics ; Biological taxonomies ; Biologisk systematik ; Biologiska vetenskaper ; Botanik ; Botany ; Centipeda ; continuous diffusion ; Correlation analysis ; Dispersal ; Diversity of life ; DNA, Ribosomal Spacer - genetics ; Estimated taxes ; Evolution ; Evolutionary Biology ; Evolutionsbiologi ; Geography ; Habitats ; Livets mångfald ; Mathematical minima ; Natural Sciences ; Naturvetenskap ; Phylogeny ; Phylogeography ; Pliocene ; Regular ; Regular Articles ; Speciation ; Species ; species tree ; Taxa ; Trees
ispartofSYSTEMATIC BIOLOGY, 2014-03-01, Vol.63 (2), p.178-191
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1Lemey, Philippe
2De Bruyn, Mark
3Suchard, Marc A
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descriptionReconstructing the biogeographic history of groups present in continuous arid landscapes is challenging due to the difficulties in defining discrete areas for analyses, and even more so when species largely overlap both in terms of geography and habitat preference. In this study, we use a novel approach to estimate ancestral areas for the small plant genus Centipeda. We apply continuous diffusion of geography by a relaxed random walk where each species is sampled from its extant distribution on an empirical distribution of time-calibrated species-trees. Using a distribution of previously published substitution rates of the internal transcribed spacer (ITS) for Asteraceae, we show how the evolution of Centipeda correlates with the temporal increase of aridity in the arid zone since the Pliocene. Geographic estimates of ancestral species show a consistent pattern of speciation of early lineages in the Lake Eyre region, with a division in more northerly and southerly groups since ~ 840 ka. Summarizing the geographic slices of species-trees at the time of the latest speciation event (~ 20 ka), indicates no presence of the genus in Australia west of the combined desert belt of the Nullabor Plain, the Great Victoria Desert, the Gibson Desert, and the Great Sandy Desert, or beyond the main continental shelf of Australia. The result indicates all western occurrences of the genus to be a result of recent dispersal rather than ancient vicariance. This study contributes to our understanding of the spatiotemporal processes shaping the flora of the arid zone, and offers a significant improvement in inference of ancestral areas for any organismal group distributed where it remains difficult to describe geography in terms of discrete areas.
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0Animals
1Arid zones
2Asteraceae - classification
3Asteraceae - genetics
4Australia
5BEAST
6Biogeography
7Biological Sciences
8Biological Systematics
9Biological taxonomies
10Biologisk systematik
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12Botanik
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17Dispersal
18Diversity of life
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20Estimated taxes
21Evolution
22Evolutionary Biology
23Evolutionsbiologi
24Geography
25Habitats
26Livets mångfald
27Mathematical minima
28Natural Sciences
29Naturvetenskap
30Phylogeny
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32Pliocene
33Regular
34Regular Articles
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38Taxa
39Trees
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abstractReconstructing the biogeographic history of groups present in continuous arid landscapes is challenging due to the difficulties in defining discrete areas for analyses, and even more so when species largely overlap both in terms of geography and habitat preference. In this study, we use a novel approach to estimate ancestral areas for the small plant genus Centipeda. We apply continuous diffusion of geography by a relaxed random walk where each species is sampled from its extant distribution on an empirical distribution of time-calibrated species-trees. Using a distribution of previously published substitution rates of the internal transcribed spacer (ITS) for Asteraceae, we show how the evolution of Centipeda correlates with the temporal increase of aridity in the arid zone since the Pliocene. Geographic estimates of ancestral species show a consistent pattern of speciation of early lineages in the Lake Eyre region, with a division in more northerly and southerly groups since ~ 840 ka. Summarizing the geographic slices of species-trees at the time of the latest speciation event (~ 20 ka), indicates no presence of the genus in Australia west of the combined desert belt of the Nullabor Plain, the Great Victoria Desert, the Gibson Desert, and the Great Sandy Desert, or beyond the main continental shelf of Australia. The result indicates all western occurrences of the genus to be a result of recent dispersal rather than ancient vicariance. This study contributes to our understanding of the spatiotemporal processes shaping the flora of the arid zone, and offers a significant improvement in inference of ancestral areas for any organismal group distributed where it remains difficult to describe geography in terms of discrete areas.
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