[R-sig-eco] Using function adonis for unbalanced designs?

[Sandra Bibiana Correa]

  Hi all,

I am trying to use PERMANOVA in a one factor design to test for 
differences in diet among species (species are in rows and foods in 
columns).I however have different sample sizes for each species (groups).

In Anderson, 2001 I found that the PERMANOVA method is for balanced 
designs but it could be modified for unbalanced designs.Does adonis 
account for differences in sample size among groups?I couldn’t find 
direct reference to this in the Vegan manual or tutorial.I read that 
MRPP can be used for unbalanced designs.  I'm not sure about Anosim.I 
would greatly appreciate any suggestions.

Thanks,

Bibiana