Oh, and forgot to mention that my sites span a distance of >2000 km. colleen -- View this message in context: http://r-sig-ecology.471788.n2.nabble.com/when-to-use-PCNM-and-other-questions-about-varpart-in-Vegan-tp6295323p6295337.html Sent from the r-sig-ecology mailing list archive at Nabble.com.