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Citation for Study 11161

Citation title: "Mass Extinction, Gradual Cooling, or Rapid Radiation? Reconstructing the Spatiotemporal Evolution of the ancient angiosperm genus Hedyosmum (Chloranthaceae) using Empirical and simulated Approaches".

Study name: "Mass Extinction, Gradual Cooling, or Rapid Radiation? Reconstructing the Spatiotemporal Evolution of the ancient angiosperm genus Hedyosmum (Chloranthaceae) using Empirical and simulated Approaches".

This study is part of submission 11151 (Status: Published).

Citation

Antonelli A., & Sanmart?n I. 2011. Mass Extinction, Gradual Cooling, or Rapid Radiation? Reconstructing the Spatiotemporal Evolution of the ancient angiosperm genus Hedyosmum (Chloranthaceae) using Empirical and simulated Approaches. Systematic Biology, .

Authors

• Antonelli A. (submitter) +46 703 989570
• Sanmart?n I.

Abstract

Chloranthaceae is a small family of flowering plants (65 species) with an extensive fossil record extending back to the Early Cretaceous. Within Chloranthaceae, genus Hedyosmum is remarkable because of its disjunct distribution ? one species in the Paleotropics and 44 confined to the Neotropics ? and the long ?temporal gap? between its stem-age (Early Cretaceous) and the beginning of the extant radiation (Late Tertiary). Is this gap real, reflecting low diversification and a recent radiation, or the signature of extinction? Here we use paleontological data, molecular phylogenetic dating, diversification analyses, and ancestral area reconstruction to investigate the timing, tempo, and mode of diversification in Hedyosmum. Our results suggest that the ancestor of Chloranthaceae and the Hedyosmum stem-lineages were widespread in the Holarctic in the Late Cretaceous and that high extinction rates possibly associated with Cenozoic climatic fluctuations were responsible for the low extant diversity of the family. Crown-group Hedyosmum originated c. 36 ? 43 Ma and colonized South America from the north during the Early-Middle Miocene (c. 20 Ma). This coincided with an increase in diversification rates, probably triggered by the uplift of the northern Andes from the Mid-Miocene onwards. This study illustrates the advantages of combining paleontological, phylogenetic, and biogeographic data to reconstruct the spatio-temporal evolution of an ancient lineage, for which the extant diversity is only a remnant of past radiations. It also shows the difficulties of inferring patterns of lineage diversification when incomplete taxon sampling is combined with high extinction rates.

Keywords

Chloranthaceae, Hedyosmum, biogeography, Neotropics, diversification, Andean uplift, high extinction, incomplete taxon sampling.

External links

About this resource

• Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S11161
• Other versions: Nexus NeXML
• Show BibTeX reference

  		@ARTICLE{TreeBASE2Ref19439,
  	 author = {Alexandre  Antonelli and Isabel  Sanmart?n},
  	 title = {Mass Extinction, Gradual Cooling, or Rapid Radiation? Reconstructing the Spatiotemporal Evolution of the ancient angiosperm genus Hedyosmum (Chloranthaceae) using Empirical and simulated Approaches},
  	 year = {2011},
  	 keywords = {Chloranthaceae, Hedyosmum, biogeography, Neotropics, diversification, Andean uplift, high extinction, incomplete taxon sampling.},
  	 doi = {},
  	 url = {http://},
  	 pmid = {},
  	 journal = {Systematic Biology},
  	 volume = {},
  	 number = {},
  	 pages = {},
  	 abstract = {Chloranthaceae is a small family of flowering plants (65 species) with an extensive fossil record extending back to the Early Cretaceous. Within Chloranthaceae, genus Hedyosmum is remarkable because of its disjunct distribution ? one species in the Paleotropics and 44 confined to the Neotropics ? and the long ?temporal gap? between its stem-age (Early Cretaceous) and the beginning of the extant radiation (Late Tertiary). Is this gap real, reflecting low diversification and a recent radiation, or the signature of extinction? Here we use paleontological data, molecular phylogenetic dating, diversification analyses, and ancestral area reconstruction to investigate the timing, tempo, and mode of diversification in Hedyosmum. Our results suggest that the ancestor of Chloranthaceae and the Hedyosmum stem-lineages were widespread in the Holarctic in the Late Cretaceous and that high extinction rates possibly associated with Cenozoic climatic fluctuations were responsible for the low extant diversity of the family. Crown-group Hedyosmum originated c. 36 ? 43 Ma and colonized South America from the north during the Early-Middle Miocene (c. 20 Ma). This coincided with an increase in diversification rates, probably triggered by the uplift of the northern Andes from the Mid-Miocene onwards. This study illustrates the advantages of combining paleontological, phylogenetic, and biogeographic data to reconstruct the spatio-temporal evolution of an ancient lineage, for which the extant diversity is only a remnant of past radiations. It also shows the difficulties of inferring patterns of lineage diversification when incomplete taxon sampling is combined with high extinction rates.}
  }
  		

• Show RIS reference

  		TY  - JOUR
  ID  - 19439
  AU  - Antonelli,Alexandre 
  AU  - Sanmart?n,Isabel 
  T1  - Mass Extinction, Gradual Cooling, or Rapid Radiation? Reconstructing the Spatiotemporal Evolution of the ancient angiosperm genus Hedyosmum (Chloranthaceae) using Empirical and simulated Approaches
  PY  - 2011
  KW  - Chloranthaceae
  KW  - Hedyosmum
  KW  - biogeography
  KW  - Neotropics
  KW  - diversification
  KW  - Andean uplift
  KW  - high extinction
  KW  - incomplete taxon sampling.
  UR  - http://dx.doi.org/
  N2  - Chloranthaceae is a small family of flowering plants (65 species) with an extensive fossil record extending back to the Early Cretaceous. Within Chloranthaceae, genus Hedyosmum is remarkable because of its disjunct distribution ? one species in the Paleotropics and 44 confined to the Neotropics ? and the long ?temporal gap? between its stem-age (Early Cretaceous) and the beginning of the extant radiation (Late Tertiary). Is this gap real, reflecting low diversification and a recent radiation, or the signature of extinction? Here we use paleontological data, molecular phylogenetic dating, diversification analyses, and ancestral area reconstruction to investigate the timing, tempo, and mode of diversification in Hedyosmum. Our results suggest that the ancestor of Chloranthaceae and the Hedyosmum stem-lineages were widespread in the Holarctic in the Late Cretaceous and that high extinction rates possibly associated with Cenozoic climatic fluctuations were responsible for the low extant diversity of the family. Crown-group Hedyosmum originated c. 36 ? 43 Ma and colonized South America from the north during the Early-Middle Miocene (c. 20 Ma). This coincided with an increase in diversification rates, probably triggered by the uplift of the northern Andes from the Mid-Miocene onwards. This study illustrates the advantages of combining paleontological, phylogenetic, and biogeographic data to reconstruct the spatio-temporal evolution of an ancient lineage, for which the extant diversity is only a remnant of past radiations. It also shows the difficulties of inferring patterns of lineage diversification when incomplete taxon sampling is combined with high extinction rates.
  L3  - 
  JF  - Systematic Biology
  VL  - 
  IS  - 
  ER  -