By Martina P | 11:05 PM UTC, Fri July 20, 2012 Locality Silbersee Country Germany pH 7.4 Conductivity (μS/cm) 229 Species Mallomonas tonsurata Synura curtispina Synura petersenii Mallomonas striata var. serrata References DÜRRSCHMIDT (1984) Coordinates 50.576914, 8.639703