TABLE 1.
Physical and chemical variables along the depth transect in Lake Fryxella
| Station | Depth (m) | EC (mS cm−1) | DO (mg liter−1) | Irradiance (% surface) | pH | DIC (mg liter−1) | DRP (μg liter−1) | NH4 N (μg liter−1) | NO2 + NO3− N (μg liter−1) |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 8.9 | 2.98 | 20.4 | 0.74 | 7.50 | 15.5 | 2 | <1b | 1 |
| 2 | 9.0 | 3.04 | 15.2 | 0.82 | 7.47 | 14.4 | 2 | <1 | 1 |
| 3 | 9.3 | 3.15 | 7.4 | 0.44 | 7.46 | 16.1 | 1 | <1 | 1 |
| 4 | 9.4 | 3.33 | 4.5 | 0.36 | 7.44 | 18.0 | 2 | <1 | 1 |
| 5 | 9.7 | 3.54 | 0.2 | 0.26 | 7.48 | 20.2 | 3 | 8 | 1 |
| 6 | 9.9 | 3.61 | 0 | 0.27 | 7.49 | 20.9 | 3 | 13 | 1 |
| 7 | 10.2 | 3.90 | 0 | 0.22 | 7.47 | 21.6 | 39 | 100 | 1 |
| 8 | 10.6 | 4.25 | 0 | 0.18 | 7.51 | 23.2 | 53 | 120 | 1 |
| 9 | 11.0 | 4.61 | 0 | 0.12 | 7.52 | 26.0 | 70 | 280 | 2 |
a
EC, electrical conductivity; DO, dissolved oxygen; DIC, dissolved inorganic carbon; DRP, dissolved reactive phosphorus.
b
<1, below limit of detection.