Amphibians on fields. Main phases of European amphibian adults and developmental stages on fields and in nearby ponds during their reproductive phases (given by months and divided into pentads; modified after Laufer et al. ) when ‘stable’ (dark blue) and ‘preterm’ (light blue). Below are shown glyphosate application points and periods (red) as recorded over 3 years in Germany (adopted from Berger et al. . Based on these, the pentads in which an amphibian life stages can be exposed to glyphosate are indicated by ‘x’.