Table 1: Variations (Mean ± SD) in the physicochemical parameters between the habitats of water hyacinth complex. Values in parenthesis indicate the range.

Habitat parameterWater hyacinthHippo grassMixed (water hyacinth and hippo grass)Open water

Secchi depth (m) 0 . 3 5 ± 0 . 1 3 0 . 2 3 ± 0 . 1 0 0 . 3 1 ± 0 . 1 4 0 . 4 2 ± 0 . 1 2
(0.10–0.45)(0.15–0.35)0.15–0.45(0.25–0.60)
Temp (°C) 2 8 . 5 0 ± 2 . 3 9 2 6 . 8 0 ± 2 . 3 3 2 8 . 0 0 ± 1 . 7 7 2 7 . 7 0 ± 2 . 1 0
(25.70–31.90)(24.20–28.70)(25.90–30.20)(25.50–31.8)
pH 7 . 8 0 ± 0 . 8 2 7 . 4 0 ± 1 . 3 6 7 . 6 0 ± 0 . 4 0 7 . 8 0 ± 0 . 4 7
(6.60–8.80)(5.90–8.50)(7.20–8.10)(7.20–8.50)
Turbidity (NTU) 1 1 2 . 2 0 ± 1 1 1 . 7 9 4 6 1 . 3 0 ± 3 6 0 . 1 3 1 5 2 . 8 0 ± 1 2 1 . 8 9 7 1 . 1 ± 2 4 . 5 1
(54.00–339.00)(77.00–791.00)(78.30–335.00)(47.30–115.00)
TP (μgP/L) 5 3 8 . 7 0 ± 8 2 3 . 3 7 4 8 6 . 9 ± 4 4 4 . 7 7 3 9 1 . 9 0 ± 1 4 7 . 0 4 2 0 8 . 1 0 ± 4 7 . 7 8
(146.90–2216.90)(179.70–996.90)(179.70–511.10)(149.70–284.00)
TN (μgN/L) 9 7 5 . 2 0 ± 7 9 6 . 4 9 5 4 2 . 4 ± 1 3 9 . 3 0 5 8 7 . 8 0 ± 1 5 7 . 1 8 6 3 3 . 3 0 ± 1 1 8 . 7 3
(750.40–2584.20)(517.30–692.50)(396.30–726.70)(485.70–834.60)
Chloro-a (μg/L)9.90–5989.40 2 3 1 . 9 0 ± 3 6 7 . 8 3 3 0 1 . 8 0 ± 2 4 5 . 8 2 8 9 . 9 5 ± 7 6 . 8 1
( 1 0 4 5 . 9 0 ± 1 0 4 5 . 0 0 ) (19.40–656.70)(11.20–612.30)(9.90–200.20)
Algal densities (individuals/cells/colonies/L) 1 2 1 7 2 . 5 ± 1 6 1 7 7 . 3 8 ) 6 9 1 4 . 6 7 ± 9 3 4 0 . 4 2 8 0 5 8 . 2 5 ± 5 7 3 1 . 5 9 4 7 7 2 . 1 2 ± 4 2 6 4 . 3 1
(700.00–36120.00)(1493.00–17700.00)(1652.00–15522.00)(1116.00–13638.00)