Fig. 4: ~14,000 years of DOC dynamics and environmental change.
From: Warming drives dissolved organic carbon export from pristine alpine soils
Time-series data for (a) Adelaide Tarn Sediment TOC (inferred from FTIRS); b water-extractable humic-like DOC PARAFAC score (c) and protein-like PARAFAC score; d Hodge Creek Cave reconstructed dripwater-DOC concentration; e Hodge Creek Cave protein-like PARAFAC component score; f Dave’s Cave reconstructed dripwater-DOC concentration; g *alkenone-derived Tasman Sea SST record (SO136-GC11)38. Dripwater humic-like DOC concentrations were reconstructed from the flowstone cores using humic-like DOC PARAFAC component scores and sample-specific Kd values. Age results and 2σe (14C for Adelaide Tarn and U–Th for the flowstone cores) are shown in black. The mean and range of modern dripwater DOC concentrations are plotted (dashed lines). Where 3D EEM fluorescence was undertaken, corresponding excitation-emission matrices (EEMs) for each PARAFAC component are shown, with individual fluorophores labelled following Coble et al.54.
