Table 1 Concentrations, yields, annual loads, and relative contributions of DOC and biochemicals.
From: Origins and transformations of dissolved organic matter in large Arctic rivers
Kolyma | Lena | Ob | Yenisei | Mackenzie | |
|---|---|---|---|---|---|
DOC (μmol L−1)1 | 651 ± 71 | 1008 ± 66 | 842 ± 25 | 901 ± 50 | 396 ± 13 |
THNS (nmol L−1)2,3 | 2809 ± 1070 | 3726 ± 922 | 2066 ± 209 | 2711 ± 208 | 327 ± 40 |
THAA (nmol L−1)2,4 | 4079 ± 693 | 5375 ± 1194 | 4817 ± 181 | 5609 ± 463 | 1365 ± 163 |
D-AA (nmol L−1)2,5 | 187 ± 28 | 239 ± 57 | 227 ± 14 | 207 ± 14 | 82 ± 3 |
Hyp (nmol L−1)2,6 | 20 ± 9 | 36 ± 11 | 22 ± 7 | 13 ± 7 | 7 ± 2 |
THNS (%OC)2 | 2.2 ± 0.6 | 1.9 ± 0.4 | 1.4 ± 0.2 | 1.7 ± 0.2 | 0.5 ± 0.1 |
THAA (%OC)2 | 2.1 ± 0.2 | 1.8 ± 0.4 | 2.0 ± 0.1 | 2.2 ± 0.1 | 1.2 ± 0.1 |
DOC load (TgC yr−1)7 | 0.86 | 6.66 | 3.91 | 4.65 | 1.15 |
THAA (GgC yr−1)7 | 12 | 61 | 44 | 63 | 7 |
THNS (GgC yr−1)7 | 16 | 76 | 53 | 67 | 5 |
DOC total (%)8 | 5 | 39 | 23 | 27 | 7 |
THAA-C total (%)8 | 6 | 33 | 24 | 34 | 4 |
THNS-C total (%)8 | 7 | 35 | 25 | 31 | 3 |
Discharge yieldTHAA (%OC)9 | 1.4 | 0.9 | 1.1 | 1.4 | 0.6 |
Discharge yieldTHNS (%OC)9 | 1.8 | 1.1 | 1.4 | 1.4 | 0.5 |
