Expression profiles for eggnog/COG (clusters of orthologous groups) (A) and Interpro2GO categories (B). Counts were derived from functional assignments to the full metatranscriptome read data. (A) Overall counts for assignments to functions related to carbohydrate transport and metabolism (family G) were then determined using MEGAN, scaling to the overall percentage of each specific functional category, with the top six eggnog categories described. (B) Overall counts for assignments to functions related to carbohydrate metabolism (GO:0005975, carbohydrate metabolic process) were then determined using MEGAN, scaling to the overall percentage of each specific functional category, with the top four InterPro assignments shown.