Fig. 2From: Ecology of bacteria in the human gastrointestinal tract—identification of keystone and foundation taxaRanked genus level degree of connectedness in I1. The bar charts show the total number of significant negative and positive genus level interactions. Dependent (acted upon) interactions are shown in a while independent (acting on) interactions are in b. Genus names are coloured according to phylum provenance: black Actinobacteria, red Bacteroidetes, green Firmicutes, blue Proteobacteria, light blue Tenericutes and pink Verrucomicrobia Back to article page