[R-sig-eco] Rarefied species richness as a diversity index

Hello, I have a question about the rarefy function in the vegan package. I have taken the output values from the rarefy function and used them as a response variable in a regression model. Call I call this a diversity index? Why or why not? Thanks very much, -- Ansley Silva *"The cle

[R-sig-eco] Errors with Simprof for cluster significance

at didn't seem to change anything. I also tried transposing the data, but no luck there. I am using braycurtis, but have tried actual-braycurtis and that did not help. I have also tried tweeking undef.zero. ​If anyone could help provide some solutions, that would be greatly appreciated. Please an

[R-sig-eco] raremax value >2, cannot run rarefy

e all 0. I am looking for an explanation for this. Is there a way to get better values for the output? Would PC-ORD do the same thing? Thanks much, ​ -- Ansley Silva *"The clearest way into the Universe is through a forest wilderness." John Muir* *Graduate Research Assistant* *U