Three-way statistical comparisons of phylogenetic differences within the enrichment culture metagenomes at different taxonomic levels. Points are displayed as the relative proportional enrichment among the metagenomes, where the closer to a corner of the plot a point falls, the more highly proportionally enriched that category is within the metagenome affiliated with that corner (arrows). Points located in the center of the plot are not enriched in one metagenome compared to the others. Only categories in which at least one metagenome’s proportion was above a threshold of 0.1% were plotted. Taxonomic levels were taken from MG-RAST phylogenetic profiles from the SEED database. Black circles indicate categories for which no pair-wise statistical significance between proportions was determined. Coloring of points indicates statistical significance for that category given a biological effect size filter in pair-wise comparisons conducted using the STAMP interface. Colors and shapes are as follows: Yellow = KB-1, Blue = ANAS, Red = DonnaII; up-pointing triangle = enriched in that metagenome above the other two, down-pointing triangle = depleted in the metagenome colored compared to the other two.