Dear all,
I want to test for a relationship between interspecific rates of evolution
and a continuous predictor variable. I didn't want to use species pairs
because they end up looking a lot of information. The method implemented in
Colevol is very elegant, but is computationally unfeasible with large trees.
One alternative could be to optimize BLs on a fixed topology and then use
root-to-tip distances as a measure of rate of evolution, but I'm concerned
about node density artifacts.
Any suggestions would be greatly appreciated.
Karla
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