Hello, I am attempting to assign significance levels to a UPGMA cluster analysis as part my doctoral research. The pvclust function works well but doesn't include the similarity index I need (morisita's) as an option for computing a distance matrix. Morisita's is available in vegdist in the VEGAN library but I am having a hard time getting the vegdist function to "direct drop" into pvclust as the vegdist documentation suggests. I would appreciate any suggestions. Thank you Brad Bradley N. Strobel Department of Natural Resource Management Texas Tech University Lubbock, TX (806)742-0841