FIGURE 6. Each dendrogram depicts hierarchical AC on a different dissimilarity matrix. All DCP matrices used complete distance due to small sample numbers (so cluster shape is unclear), while DAt used the ward algorithm to compute distance between clusters. Distance thresholds were chosen so that the resulting clusters are preserved under larger perturbations. Errors in classification are marked with an asterisk. One primary shortcoming can be seen readily in these dendrograms: P. spicatus and P. fredericki are not well separated.