Mike,

You could use bootstrapping.  See for example the function boot() in 
pacakge boot.

library(boot)
?boot

Jean



Michael Eisenring <michael.eisenring@gmx.ch> wrote on 09/25/2012 04:54:29 
AM:
> 
> Dear R-help members.
> Maybe this is not the right platform to ask this, but I'm looking 
> desperately for a test which is calculating confidence intervals 
> from diversity measurements (non-normaly distributed) (fishers alpha
> diversity). I was checking the package "vegan" but there seems to be
> nothing useful. Does anyone of you know with what package I easily 
> could calculate such a confindence interval?
> 
> Best,
> Mike

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