FIG. 1.
MPN counts of chemolithoautotrophic SOB (dark bars) in sediment samples from the shallow-water hydrothermal vent system off Milos. The Thiomicrospira cell number (light bars) were determined by enzymatic amplification of the 16S rDNA with genus-specific primers. The error bars indicate the 95% confidence intervals. Percentages shown next to the Thiomicrospira bar are the Thiomicrospira numbers given as percentages of total SOB. The incubation temperatures are also given.