Fig. 6
Detailed diagram presenting the Stawek charcoal layer: [A] macroscopic charcoal morphotype data (square-root transformed); [B] macro- and microscopic charcoal accumulation rates (logarithmic scale); [C1]—charcoal count and morphotype data with [C2] comparative results for the Raman spectroscopy of charcoal samples between core depths 80.0 – 96.0 cm. Values for median RBS are shown here alongside equivalent metrics for fire intensity reconstruction, including ‘energy released’ (kJ) and ‘total incident energy’ (MJ) after Eqs. (1) and (2), respectively77. Dotted lines indicate upper and lower confidence intervals (95%) for fire intensity reconstruction; and [D] SEM photographs of the largest found charred wood fragments of Pinus sylvestris presenting: [D1] wood cell structure, [D2] hyphae penetrating cell walls, and [D3] compression wood.
