Fig. 1.

Concentrations of AllBac and BacUni markers for total fecal pollution in pristine soil samples (n = 29) and fecal samples (n = 20) in marker equivalents (ME) per g wet weight. BacR marker concentrations are given as a reference of fecal pollution levels. BacR was not detected in the 29 soil samples which were selected based on this property. Boxes, 25th and 75th percentile; lines within the boxes, median; whiskers, 10th and 90th percentile, respectively; data is log^+ 1-transformed; dashed line represents assay limit of detection under the given circumstances.