[R-sig-eco] cluster defined by environment followed by mrpp

[gabriel singer]

Hi list,

Conducting sort of an opinion poll among list members.
Start with two matrices, one environmental, one species, same sites. I 
wondered what people think of defining groups by a cluster analysis 
based on the environmental variables (say, hclust or similar). Then 
testing for a difference among those groups with regard to the second 
species data set (say, adonis or mrpp).
I guess the spatial people will feel hurt at least? The strategy seems 
to be quite common, though. Would be nice to hear opinions.

cheers, gabriel