Hello, I want to know if a binary character is related to species richness (not diversification rates). I am using genera as units, and using PGLS to relate genus richness to the proportion of species that have a particular state. From the model diagnostic plots I am worried that my data are violating assumptions of PGLS. Most genera either have no species with this trait or all species having the trait (proportion = 0 or 1), with a few genera in the middle. As such, the corrected residuals still have structure. Is there a better way to go about testing this question?
Thank you! [image: model diagnostics richness.png] -- Elizabeth Miller PhD Candidate Ecology and Evolutionary Biology University of Arizona
_______________________________________________ R-sig-phylo mailing list - R-sig-phylo@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-phylo Searchable archive at http://www.mail-archive.com/r-sig-phylo@r-project.org/
