@ARTICLE{TreeBASE2Ref24323,
author = {Juan Carlos Villarreal and Susanne S Renner and Natalie Cusimano},
title = {Biogeography and diversification rates in hornworts: The limitations 1 of diversification modeling},
year = {2015},
keywords = {biogeography; diversification modeling; extinction rates; geographic disjunctions; hornworts},
doi = {10.12705/642.7},
url = {http://},
pmid = {},
journal = {Taxon},
volume = {},
number = {},
pages = {},
abstract = { Hornworts comprise ca. 220 species and are among the oldest landplant lineages, even though their precise phylogenetic position remains unclear. Deep within-hornwort divergences, highly uneven species numbers/genus, and the assumed high stem age together suggest a history of changing diversification (i.e., speciation minus extinction) rates. To study the geographic distribution of modern hornworts and their patterns of species accumulation, we generated a mitochondrial and plastid DNA matrix for 103 species representing all major groups and then applied molecular-clock dating, using a different calibration approach than in earlier work. We used the BAMM software to fit rate-variable and constant-rate birth-death diversification models to the dataset, and we also inferred ancestral areas to a time depth of 55 Myr (Early Eocene). We analyzed diversification rates for all hornworts and separately for species-rich subclades. Under BAMM?s variable-rates model (which fits the data better than a constant-rate birth-death model, but still assumes that each species has the same speciation and extinction probability regardless of its age), hornworts have gradually increasing rates of speciation and a constant background extinction rate. No shifts in diversification rate could be detected. The implausible finding of a constant background extinction rate illustrates the limitations of diversification modeling especially as regards extinction rates. }
}
Citation for Study 17263
Citation title:
"Biogeography and diversification rates in hornworts: The limitations 1 of diversification modeling".
Study name:
"Biogeography and diversification rates in hornworts: The limitations 1 of diversification modeling".
This study is part of submission 17263
(Status: Published).
Citation
Villarreal J., Renner S.S., & Cusimano N. 2015. Biogeography and diversification rates in hornworts: The limitations 1 of diversification modeling. Taxon, .
Authors
-
Villarreal J.
-
Renner S.S.
011-49-(0)89-17861250
-
Cusimano N.
+49 (0)89-17861251
Abstract
Hornworts comprise ca. 220 species and are among the oldest landplant lineages, even though their precise phylogenetic position remains unclear. Deep within-hornwort divergences, highly uneven species numbers/genus, and the assumed high stem age together suggest a history of changing diversification (i.e., speciation minus extinction) rates. To study the geographic distribution of modern hornworts and their patterns of species accumulation, we generated a mitochondrial and plastid DNA matrix for 103 species representing all major groups and then applied molecular-clock dating, using a different calibration approach than in earlier work. We used the BAMM software to fit rate-variable and constant-rate birth-death diversification models to the dataset, and we also inferred ancestral areas to a time depth of 55 Myr (Early Eocene). We analyzed diversification rates for all hornworts and separately for species-rich subclades. Under BAMM?s variable-rates model (which fits the data better than a constant-rate birth-death model, but still assumes that each species has the same speciation and extinction probability regardless of its age), hornworts have gradually increasing rates of speciation and a constant background extinction rate. No shifts in diversification rate could be detected. The implausible finding of a constant background extinction rate illustrates the limitations of diversification modeling especially as regards extinction rates.
Keywords
biogeography; diversification modeling; extinction rates; geographic disjunctions; hornworts
External links
About this resource
- Canonical resource URI:
http://purl.org/phylo/treebase/phylows/study/TB2:S17263
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- Show BibTeX reference
@ARTICLE{TreeBASE2Ref24323,
author = {Juan Carlos Villarreal and Susanne S Renner and Natalie Cusimano},
title = {Biogeography and diversification rates in hornworts: The limitations 1 of diversification modeling},
year = {2015},
keywords = {biogeography; diversification modeling; extinction rates; geographic disjunctions; hornworts},
doi = {10.12705/642.7},
url = {http://},
pmid = {},
journal = {Taxon},
volume = {},
number = {},
pages = {},
abstract = { Hornworts comprise ca. 220 species and are among the oldest landplant lineages, even though their precise phylogenetic position remains unclear. Deep within-hornwort divergences, highly uneven species numbers/genus, and the assumed high stem age together suggest a history of changing diversification (i.e., speciation minus extinction) rates. To study the geographic distribution of modern hornworts and their patterns of species accumulation, we generated a mitochondrial and plastid DNA matrix for 103 species representing all major groups and then applied molecular-clock dating, using a different calibration approach than in earlier work. We used the BAMM software to fit rate-variable and constant-rate birth-death diversification models to the dataset, and we also inferred ancestral areas to a time depth of 55 Myr (Early Eocene). We analyzed diversification rates for all hornworts and separately for species-rich subclades. Under BAMM?s variable-rates model (which fits the data better than a constant-rate birth-death model, but still assumes that each species has the same speciation and extinction probability regardless of its age), hornworts have gradually increasing rates of speciation and a constant background extinction rate. No shifts in diversification rate could be detected. The implausible finding of a constant background extinction rate illustrates the limitations of diversification modeling especially as regards extinction rates. }
}
- Show RIS reference
TY - JOUR
ID - 24323
AU - Villarreal,Juan Carlos
AU - Renner,Susanne S
AU - Cusimano,Natalie
T1 - Biogeography and diversification rates in hornworts: The limitations 1 of diversification modeling
PY - 2015
KW - biogeography; diversification modeling; extinction rates; geographic disjunctions; hornworts
UR - http://dx.doi.org/10.12705/642.7
N2 - Hornworts comprise ca. 220 species and are among the oldest landplant lineages, even though their precise phylogenetic position remains unclear. Deep within-hornwort divergences, highly uneven species numbers/genus, and the assumed high stem age together suggest a history of changing diversification (i.e., speciation minus extinction) rates. To study the geographic distribution of modern hornworts and their patterns of species accumulation, we generated a mitochondrial and plastid DNA matrix for 103 species representing all major groups and then applied molecular-clock dating, using a different calibration approach than in earlier work. We used the BAMM software to fit rate-variable and constant-rate birth-death diversification models to the dataset, and we also inferred ancestral areas to a time depth of 55 Myr (Early Eocene). We analyzed diversification rates for all hornworts and separately for species-rich subclades. Under BAMM?s variable-rates model (which fits the data better than a constant-rate birth-death model, but still assumes that each species has the same speciation and extinction probability regardless of its age), hornworts have gradually increasing rates of speciation and a constant background extinction rate. No shifts in diversification rate could be detected. The implausible finding of a constant background extinction rate illustrates the limitations of diversification modeling especially as regards extinction rates.
L3 - 10.12705/642.7
JF - Taxon
VL -
IS -
ER -
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