Hi All,
Do you know if there are any methods out there for fitting ecological
release and release and radiate models that are clade-specific? That
is, in which the change in mode (OU to BM) happens at the root of a
clade instead of at specific time for the whole phylogeny (as in Slater
2013).
As far as I know the closest out there are models in OUwie, say with a
clade-specific second OU process with a very low alpha. However, I
don't think that biologically OU is a good model for the trait and clade
in question (though it is for the rest of the tree). I know that at the
limit as alpha -> 0 OU converts to BM, but I would ideally still like
compare standard models' fits (including OUwie models) to the fits of
clade-specific release models.
Any leads or suggestions would be much appreciated, especially about how
to implement these clade-specific models with current tools or about how
to "roll my own".
Thanks!
Dan.
--
Daniel Fulop, Ph.D.
Postdoctoral Scholar
Dept. Plant Biology, UC Davis
Maloof Lab, Rm. 2220
Life Sciences Addition, One Shields Ave.
Davis, CA 95616
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