Table 4.
Temporal variability in relative contributions (mean ± SD) of sediment sources within individual sub-catchment and sub-catchments contribution to sediments downstream to confluence using MixSIAR node-by-node i.e. the raw ingredients of the D-MixSIAR prior to deconvolution.
| Catchment | Source | Season | ||
|---|---|---|---|---|
| EW (April-June) | MW (July-Aug) | LW (Sep-Oct) | ||
| Dandakharka [Node M1] | BLF | 0.70 ± 0.11 | 0.58 ± 0.12 | 0.50 ± 0.12 |
| MF | 0.19 ± 0.1 | 0.28 ± 0.13 | 0.35 ± 0.14 | |
| LL | 0.03 ± 0.03 | 0.03 ± 0.04 | 0.03 ± 0.04 | |
| UP | 0.08 ± 0.08 | 0.11 ± 0.13 | 0.12 ± 0.14 | |
| Kharka [Node M2] | MF | 0.75 ± 0.17 | 0.87 ± 0.14 | 0.76 ± 0.20 |
| LL | 0.12 ± 0.12 | 0.06 ± 0.09 | 0.14 ± 0.17 | |
| UP | 0.13 ± 0.11 | 0.07 ± 0.10 | 0.09 ± 0.11 | |
| Confluence [Node M3] | Dandakharka | 0.74 ± 0.17 | 0.83 ± 0.17 | 0.78 ± 0.2 |
| Kharka | 0.26 ± 0.17 | 0.17 ± 0.17 | 0.22 ± 0.2 | |
| Model type | Sources | Season | ||
| EW (April-June-) | LW (July-Aug) | MW (Sept-Oct) | ||
| Deconvolutional MixSIAR [Node M3] | BLF | 0.52 ± 0.14 | 0.41 ± 0.13 | 0.46 ± 0.15 |
| LL | 0.05 ± 0.05 | 0.05 ± 0.06 | 0.04 ± 0.05 | |
| MF | 0.33 ± 0.13 | 0.42 ± 0.15 | 0.42 ± 0.17 | |
| UP | 0.09 ± 0.07 | 0.12 ± 0.13 | 0.09 ± 0.11 | |
| Pooled MixSIAR [Node M3] | BLF | 0.79 ± 0.07 | 0.76 ± 0.08 | 0.81 ± 0.08 |
| LL | 0.03 ± 0.03 | 0.03 ± 0.04 | 0.03 ± 0.03 | |
| MF | 0.12 ± 0.08 | 0.14 ± 0.10 | 0.11 ± 0.08 | |
| UP | 0.06 ± 0.05 | 0.07 ± 0.07 | 0.06 ± 0.06 | |
(Seasons: EW = early wet, LW = late wet and MW = mid-wet and sources: BLF = broad leaf forest, MF = mixed forest, LL = lowland, and UP = upland) (b) pooled MixSIAR versus D-MixSIAR relative contributions for node M3.