Post on 29-Aug-2014
description
A novel method for time-binning rates of continuous character evolution on a phylogeny
Graeme T. Lloyd and Matt Friedman
Coming soon…
Fossilworks Intensive Workshop in Analytical Paleobiology
June-July 2014
University of Macquarie, Sydney
fossilworks.org
Acknowledgements
ChrisOrgan
GrahamSlater
Phylogeny in macroevolution
Variable-rate models
Early Burst
Late BurstTrai
t
Time
Continuous ratesRa
te
Time
Continuous ratesRa
te
Time
Continuous rates
Raia et al. 2013
Guts
Harmon et al. 2008
Method
Method
Method
Method
Method
S1 S2 S31
Data
Anderson et al. 2013
Data
Anderson et al. 2013
“Equal” time-scaling
τ7
τ8
τ6
τ5
root age
τ7
τ6
τ5
Traditional approach first Share time with preceding(non-zero length) branch
Ruta et al. 2006; Brusatte et al. 2008
τ8
Probabilistic time-scaling
τ6
τ5
τ4
τ2
τ1
τ3
Hedman 2010
τ0
Probabilistic time-scaling
τ0
τ6
τ5
τ4
τ2
τ1
τ3
Hedman 2010Age (Ma)
τ0
“Equal” time-tree
Probabilistic time-tree
Rates
“Equal” timetree
Rates
“Equal”timetree
Rates
“Equal” timetreeProbablistic timetree
“Equal” rates with error
Probabilistic rates with error
Model complexity
S1 S2
Change in mode
Slater 2013
BrownianOrnstein-Uhlenbeck
Conclusions
Conclusions
Conclusions
Conclusions