Variables | Unit | Mean | SD | Range |
---|---|---|---|---|
Altitude | Meter above sea level | 1725 | 35 | 1655–1800 |
Area | Hectare | 0.65 | 0.9 | 0–7.8 |
Water depth | Meter | 0.37 | 0.2 | 0–1.42 |
Canopy cover | % | 6 | 15 | 0–100 |
Air temperature | °C | 27 | 3 | 19–39 |
Water temperature | °C | 24 | 3 | 16–34 |
pH | - | 7 | 0.6 | 5.4–10 |
Dissolved oxygen | mg/l | 4.7 | 2 | 0.47–10 |
Conductivity | μS/cm | 112 | 55 | 21–513 |
Total dissolved solid | mg/l | 106 | 77 | 15–425 |
Turbidity | NTU | 160 | 218 | 4–894 |
Alkalinity | mg/l | 58 | 33 | 0–250 |
Hardness | mg/l | 37 | 23 | 0–160 |
Nitrate | mg/l | 0.4 | 0.48 | 0–2.3 |
Ortho-phosphate | mg/l | 0.12 | 0.2 | 0–1.4 |
Permanency | Temporary(1), semi-permanent(2), Permanent(3) | N/A | N/A | N/A |
Emergent plant cover | Very low to very high | 2 | 1.6 | 0–4 |
5 class (0–4) | ||||
Submerged plant | Very low to very high | 0 | 0.5 | 0–4 |
5 class (0–4) | ||||
Floating plant | Very low to very high | 0 | 0.5 | 0–4 |
5 class (0–4) | ||||
Habitat type | 9 types (see Table 2) | N/A | N/A | N/A |
Substrate type | Silt(1), sandy(2), gravel(3), artificial substrate(4) | N/A | N/A | N/A |
Land-use | 9 types (See Figure 3) | N/A | N/A | N/A |
Fish | Absence(0), presence(1) | N/A | N/A | N/A |
Invertebrate predators | Abundance | 28 | 42 | 0–232 |
Competitors | Abundance | 2.7 | 4 | 0–23 |