indicator value in labdsv
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: http://www.bio.umontreal.ca/legendre/reprints/index.html 1997 * DufrÂêne, 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... HTH G
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