Figure 2.

Heatmap indicating the relative abundance of all bacterial families with a mean relative abundance of ≥1% among either all Urban Estuary or all Lake Michigan samples. Common freshwater lineages as described in Newton et al. (2011a) are indicated with their respective family assignments. A previously compiled freshwater dataset is also depicted (FW Database) and consists of bacterial group distributions inferred from whole community 16S rRNA gene amplification and clone library construction across 47 lakes as described in Newton et al. (2011a).