Physicochemical Parameters and Fish Assemblages in the Downstream River of a Tropical Hydroelectric Dam Subjected to Diurnal Changes in Flow

Table 2

Means and standard deviations of the physicochemical characteristics of the downstream river of Batang Ai.

Parameter	Upstream	Middle stream	Downstream
pH	± 0.2	± 0.2	± 0.4
Temperature	± 1.4	± 1.6	± 0.7
Conductivity	± 5.3	± 5.0	± 5.7
DO	± 1.7	± 1.5	± 1.4
Turbidity	± 0.8	± 1.3	± 14.9
TSS	± 0.5	± 13.9	± 11.6
BOD5	± 0.2	± 1.4	± 1.2
Chl a	± 0.9	± 0.4	± 1.4

Mean followed by different letters indicated significant difference at .