Fig. 6From: Citizen science charts two major “stomatotypes” in the oral microbiome of adolescents and reveals links with habits and drinking water compositionGeographical patterns. Maps show that most of the measured ion levels follow a similar pattern to the proportion of stomatotype 1 samples. Porphyromonas had a significantly higher abundance in stomatotype 1 samples, while Veillonella had a significantly higher abundance in stomatotype 2 samples. Region names can be seen in Additional file 1. a Percentage of samples from each region that have stomatotype 1. b Mean alkalinity level per sample in each region (an example of one of the tap water measurements compared in this study). c Mean abundance of Porphyromonas per sample in each region. d Mean abundance of Veillonella per sample in each regionBack to article page