Thank you very much! This is exactly the problem, I am in. I ran the NMDS for only one gender and it shows me the results, I was expecting.
I was told to use bray-curtis, because there are a lot of "0"s in my data set and in e.g. manhattan these would have to much influence on the result. But in nature, chemicals that are only weakly represented may not have very much influence on the other individuals. For the moment, I won't question that decision, because it's quite a convention in chemical ecology, as I heard. Regards, Fabian -- View this message in context: http://r.789695.n4.nabble.com/Problem-with-metaMDS-in-vegan-tp4685022p4685134.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.