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Enrichment scenarios for nutrient amendment experiment.
| NA CtrI | I | II | III | IV | V | VI | |
|---|---|---|---|---|---|---|---|
| PO4-P (μg l-1) | – | 1 | 5 | 10 | 20 | 40 | 80 |
| NH4NO3-N (μg l-1) | – | 6 | 11 | 22 | 45 | 90 | 180 |
| glucose- C (mg l-1) | – | 0.125 | 0.25 | 0.5 | 1 | 2 | 4 |
| Addition equal to∗ | (no addition) | lowest | mid-range | highest | 2 × highest | 4 × highest | 8 × highest |
∗Values for ML meltwater reported by Säwström et al. (2002).
