[R] indicator value in labdsv

Gavin Simpson gavin.simpson at ucl.ac.uk
Mon Sep 19 13:16:13 CEST 2005

On Mon, 2005-09-19 at 09:41 +0200, astrzelczak at ps.pl wrote:
> Hi,
> I'm trying to find out what threshold of indicator value in labadsv should be
> used to accept a specie as an indicator one? So far I assumed that indval=0.5
> is high enough to avoid any mistakes but it was based only in my intuition.
> I'd be greatful for any advise
> best regards
> Agnieszka

Have you looked at the paper pertaining to the method? I assume you mean
the duleg() function in package labdsv?

If so, see this reprint on Pierre Legendre's web site:


      * DufrÃªne, M. & P. Legendre. 1997. Species assemblages and
        indicator species: the need for a flexible asymmetrical
        approach. Ecological Monographs 67: 345-366.

That may help answer your question. Sorry I can't be of further help - I
haven't used this method before.

If it isn't duleg() then you'll need to provide more information...



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