Skip to main content
. 2013 May 6;4:67. doi: 10.3389/fmicb.2013.00067

Figure 2.

Figure 2

Distribution of pH (A) and electrical conductivity (EC) (B) values across 7700 and 6450 geothermal features, respectively, cataloged in the Yellowstone Center for Resources (YCR) database (available on line via www.rcn.montana.edu). Vertical bars along pH and EC axes indicate values of the 20 sites described in the current study (Aquificales “streamer” communities = blue; archaeal-dominated sites = red; phototrophic mats = green). Ionic strengths ranging from ∼0.005–0.04 M are indicated with dashed lines (WS_18 has the highest EC in the study of ∼3.2 mmho/cm).