Table 2. Five unique classes were significantly differentially
abundant between groups of interest. ANCOM was conducted at the class
level within four subsets of data: Santa Cruz Island (SCZ) samples only,
Santa Rosa Island (SRI) samples only, island spotted skunks only, and
island foxes only. Across species comparisons returned four unique
classes, with Deltaproteobacteria and Gammaproteobacteria consistently
more abundant in foxes across both islands. Within species comparisons
returned one differentially abundant class between skunk populations,
with no significant results between island fox populations. The table
includes the Phylum and Class of each significant result alongside the
ANCOM test statistic (W, which indicates the number of times the null
hypothesis was rejected for a given class), the dataset used for the
analysis, and the direction of change (i.e. , which group
exhibited higher abundance).