Liam wrote: > I'm not sure I entirely agree that we need to assume that the environmental > trait is evolving on the tree by Brownian motion. I believe that so long as > Y|X (in David's example, growth rate given habitat degradation) is evolving > by Brownian motion, we should be OK to use PIC regression.
I worry. Why are we to assume that current phenotypes are distributed around optima that are based on *current* environmental variables? Joe --- Joe Felsenstein, j...@gs.washington.edu Department of Genome Sciences and Department of Biology University of Washington Box 355065 Seattle WA 98195-5065 _______________________________________________ R-sig-phylo mailing list R-sig-phylo@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-phylo
