Table 1 DOC and isotope characteristics throughout the fluvial network.
From: Utilization of ancient permafrost carbon in headwaters of Arctic fluvial networks
n | Initial DOC (μM) | SUVA254 (l mgC−1 m−1) | DOCloss (%) | Init. Δ 14 C (‰) | OC loss Δ 14 C (‰) | Mean OC loss age ( 14 C years) | Permafrost (%) | Contemporary (%) | In situ (%) | |
|---|---|---|---|---|---|---|---|---|---|---|
Yedoma thaw | 5 | 10,939±1,278 | 1.63±0.19 | 47.2±7.6 | −884±41 | −873±48 | 16,576 | 97.2±0.8 | 1.7±0.5 | 1.1±0.5 |
Erosion streams | 3 | 2,503±518 | 3.25±0.44 | 17.5±4.9 | −214±145 | −405±185 | 4,171 | 42.8±20.7 | 56.4±20.7 | 0.8±0.4 |
Streams | 25 | 1,691±87.6 | 3.44±0.11 | 13.3±2.0 | 51±6 | −21±50 | 170 | 13.0±4.0 | 85.9±4.0 | 1.1±0.2 |
Minor tributaries | 7 | 766±110 | 3.56±0.19 | 21.0±5.5 | 25±13 | 26±88 | Modern | 5.7±3.5 | 93.7±3.6 | 0.6±0.2 |
Major tributaries | 8 | 511±68 | 4.03±0.08 | 12.2±1.8 | 40±3 | 68±32 | Modern | 0.6±0.1 | 73.1±8.4 | 26.3±9.9 |
Main stem | 6 | 425±46 | 3.67±0.10 | 14.6±1.8 | 22±9 | 74±42 | Modern | 0.7±0.1 | 88.6±2.8 | 10.7±4.4 |
