Fig. 5

a WTD reconstructions for the post-fire period based on testate amoeba records and b growing degree days (> 0 °C) from May to September in the study area for the period 1950–2013. Error bars of both WTD reconstructions and age-depth modelling are shown by pale thin lines. Boxplots show the median, quartile range, extreme values (dotted lines), and outliers (dots) of the distribution. Tukey’s HSD test indicates no significant difference between the three sites. Grey dotted lines represent significant breakpoints (P <  0.01) in slopes based on Davies test. Climate data were extracted from McKenney et al. (2011). A 10-year loess smoothing is shown by the pink dashed line