|
Predictor variable
|
Tropical rainy climate zone
|
Warm temperate rainy climate zone
|
|---|
|
Range
|
Mean ± SD
|
Median
|
Range
|
Mean ± SD
|
Median
|
|---|
|
Altitude (m)
|
1655–1699
|
1678.9 ± 7
|
1681
|
1618–1645
|
1633.3 ± 5.3
|
1634
|
|
Water depth (m)
|
0.2–2.0
|
0.7 ± 0.4
|
0.6
|
0.1–1.2
|
0.5 ± 0.2
|
0.5
|
|
Transparency (m)
|
0.1–0.6
|
0.2 ± 0.1
|
0.2
|
0.1–0.8
|
0.3 ± 0.1
|
0.2
|
|
Ambient temperature (°C)
|
18–30
|
25 ± 2.9
|
26
|
16–30
|
23.7 ± 2.9
|
24
|
|
Water temperature (°C)
|
14.2–27.6
|
22 ± 3
|
22.2
|
15.2–30.2
|
21.9 ± 3.8
|
21.8
|
|
Dissolved oxygen (mg/l)
|
0.1–16
|
4.7 ± 2.7
|
4.5
|
0.3–21.5
|
6.5 ± 3.6
|
6.2
|
|
Oxygen saturation (%)
|
1.1–209
|
66 ± 38.7
|
60.4
|
4.4–349
|
96.1 ± 62.2
|
91.4
|
|
Chemical oxygen demand (mg/l)
|
7.9–50.4
|
19.8 ± 8.1
|
18.4
|
3.4–41.3
|
15.7 ± 7.3
|
16.2
|
|
Electrical conductivity (μS/cm)
|
137.3–2015
|
757 ± 431.1
|
902
|
233–3680
|
893 ± 590.7
|
700
|
|
pH
|
5.4–9.6
|
8.2 ± 0.9
|
8.9
|
3.1–9.8
|
7.5 ± 1.6
|
8.1
|
|
Turbidity (NTU)
|
2.8–247
|
24.6 ± 43.5
|
14.1
|
1.8–159
|
32 ± 34.8
|
13.9
|
|
Chlorophyll-a (µg/l)
|
12.7–41.4
|
15.5 ± 4.5
|
14.1
|
12.6–33.1
|
14.9 ± 2.8
|
13.9
|
|
Total suspended solids (mg/l)
|
90.8–687.2
|
268.8 ± 174
|
200.8
|
87.2–759.6
|
170.1 ± 111.7
|
145.6
|
|
Chloride (mg/l)
|
5–87
|
34.7 ± 18.7
|
38
|
16–252.9
|
37.1 ± 33.6
|
26
|
|
Nitrate (mg/l)
|
0–130.3
|
7 ± 17.3
|
0.5
|
0–95.3
|
8.4 ± 17.8
|
0.5
|
|
Ammonia (mg/l)
|
0–5.1
|
0.7 ± 0.9
|
0.4
|
0–5.1
|
0.8 ± 1.1
|
0.3
|
|
Total phosphorus (mg/l)
|
0–24.7
|
1.9 ± 3.4
|
1.0
|
0–11.1
|
1.2 ± 1.5
|
0.8
|
|
Orthophosphate (mg/l)
|
0–23.9
|
1.1 ± 2.8
|
0.4
|
0–7.8
|
0.5 ± 0.9
|
0.3
|
|
Alkalinity (mg/l)
|
78–896
|
381.4 ± 185.9
|
404
|
164–1414
|
376.1 ± 230.5
|
304
|
|
Total hardness (mg/l)
|
22–184
|
51.5 ± 23.4
|
46
|
52–316
|
116.4 ± 45.1
|
112
|
|
Calcium (mg/l)
|
14–114
|
32.4 ± 18.4
|
26
|
32–196
|
71.6 ± 34.6
|
60
|
|
Magnesium (mg/l)
|
0–76
|
19.1 ± 12.8
|
18
|
4–190
|
44.8 ± 29.9
|
44
|
|
Canopy cover (%)
|
0–100
|
21.5 ± 32.2
|
0
|
0–100
|
29.5 ± 35.7
|
10
|
|
Predator abundance (n)
|
0–153
|
19.4 ± 23.5
|
10
|
0–43
|
9.2 ± 9.4
|
1
|
|
Competitor abundance (n)
|
0–5
|
0.3 ± 0.8
|
0
|
0–79
|
2.9 ± 11.8
|
0
|
- Abbreviation: SD, standard deviation
