Spore content (expressed as equivalents of B. subtilis) of soil from ten different locations. A: grassland soil (municipality of Männedorf, site 1); B: grassland soil (municipality of Männedorf, site 2); C: grassland soil (municipality of Männedorf, site 3); D: grassland soil (municipality of Uerikon); E: grassland soil (municipality of Dübendorf); F: forest soil (municipality of Stäfa, site 1); G: forest soil (municipality of Stäfa, site 2); H: forest soil (municipality of Stäfa, site 3); I: aquatic sediment (river Glatt in Dübendorf, site 1); J: aquatic sediment (river Glatt in Dübendorf, site 2). Bars represent mean values of triplicates. Carbon, hydrogen, and nitrogen content (in % of dry soil) was for grassland soil 6.9 ± 0.6, 0.98 ± 0.07, and 0.54 ± 0.03; for forest soil 4.7 ± 2.3, 0.84 ± 0.29, and 0.32 ± 0.12; for aquatic sediments 6.5 ± 0.4, 0.36 ± 0.09, and 0.11 ± 0.03, respectively.