Figure 3. Carbon and nitrogen distribution with depth.

The figure illustrates the variation of total and cumulative concentration, as well as of its isotope signature, of both organic C (a–c) and total N (d–f) throughout the 400-cm deep peat profile. Blue wavy lines represent water lenses occurring throughout the profile. In panels (b) and (e), selected conventional ¹⁴C age dates are reported (for details, see Supplementary Table S4).