Table 1.
Characteristics of the sites sampled
| Sample | Site A1 | Site A2 | Site A5 | Site A4 |
|---|---|---|---|---|
| Date of sampling (day/mo/yr) | 07/04/2008 | 07/04/2008 | 08/04/2008 | 09/04/2008 |
| Ecosystema | HAF | HAF-SP | SP | SP |
| Location | 4°58′13.2″ N, 75°22′42″ W | 4°58′10.3″ N, 75°22′38.6″ W | 4°54′32.8″ N, 75°18′19′ W | 04°52′27″N, 75°15′51.4′W |
| Altitude (m) | 3,464 | 3,876 | 4,363 | 3,973 |
| DAPI count (cells/ml) | 2.09 × 105 | 9.16 × 104 | 2.42 × 104 | 2.35 ×105 |
| Temp (°C) | 56.9 | 56.8 | 35 | 28.9 |
| pH | 2.03 | 2.04 | 3.12 | 2.7 |
| Acidity (CaCO3) (mg/liter) | 3,633 | 4,525 | 500 | 500 |
| Chloride (Cl−) (mg/liter) | 653 | 841 | 139 | 56.6 |
| Sulfates (SO42−) (mg/liter) | 2,681 | 3,239 | 1,052 | 1,003 |
| Calcium (Ca2+) (mg/liter) | 195 | 247 | 256 | 320 |
| Sodium (Na+) (mg/liter) | 413 | 531 | 122 | 45.2 |
| Magnesium (Mg2+) (mg/liter) | 282 | 247 | 134 | 55.3 |
| Potassium (K+) (mg/liter) | 60.8 | 74.3 | 13.5 | 9.25 |
| Nitrates (NO3−) (mg/liter) | 2.44 | 0.51 | ≤0.19 | 0.89 |
| Total hardness (CaCO3, mg/liter) | 1,192 | 1,461 | 1,285 | 1,224 |
| Total phosphate (PO4, mg/liter) | 1.89 | 2.76 | 0.25 | 0.1 |
| Total iron (mg/liter) | 56 | 69.4 | 25.8 | 8.27 |
| Total suspended solids (mg/liter) | 13.6 | 138 | 28.4 | ≤8.01 |
| Total solids (mg/liter) | 7,039 | 8,854 | 3,124 | 2,620 |
| Total dissolved solids (mg/liter) | 6,032 | 7,049 | 2,561 | 2,280 |
a
Ecosystem abbreviations: HAF, high Andean forest; SP, Superpáramo.