Fig. 2From: A unique prokaryotic vertical distribution in the groundwaters of deep sedimentary geological settings in Hokkaido, JapanVertical geological, hydrological, and microbiological zonation of the studied borehole. a Geology with estimated aquifer systems based on Ikawa et al. (2014), b water temperature and geology, c chloride concentration and δD (based on Ikawa et al. 2014), d density of prokaryotes and FDC, relative density of bacteria and archaea estimated by FISH, and active cells detected by the LIVE/DEAD methodBack to article page