FIGURE 2.

Overall eukaryote diversity in Ekaluktutiak (Cambridge Bay region) revealed with high-throughput sequencing. (A) Dendrogram of Bray–Curtis dissimilarity from the Hellinger-transformed operational taxonomic unit (OTU) table containing all protist OTUs. The samples clustered primarily as under ice (Ice1 and Ice2) and open water (Open3 and Open4). (B) Relative abundance of reads classified by higher-level taxonomy. (C) Relative abundance of reads from the samples within the OTU categories following the initial core definitions. OTUs present in all samples are shown in green, OTUs with 100% prevalence in under-ice samples are in blue, OTUs with 100% prevalence in open-water samples are in orange, and the prevalence of reads from OTUs that were not defined as core is in gray.