Diversity and Distribution of Aquatic Insects in Streams of the Mae Klong Watershed, Western Thailand

Table 2

Mean values (±SD) of environmental variables in each sampling site.

Parameter/station	PK1	PK2	KY1	KY2	UL1	UL2
AT	31.35 ± 3.03	33.73 ± 1.73	31.87 ± 2.66	30.04 ± 4.36	30.57 ± 1.86	29.97 ± 3.68
WT	28.45 ± 3.02	29.82 ± 2.67	29.03 ± 2.17	28.58 ± 2.57	27.83 ± 1.15	28.11 ± 2.72
pH	8.05 ± 0.85	8.15 ± 0.9	8.15 ± 0.59	7.99 ± 0.99	8.43 ± 0.64	8.19 ± 0.53
DO	4.16 ± 2.08	4.45 ± 1.98	3.79 ± 1.63	5.0 ± 1.67	3.86 ± 0.65	6.35 ± 2.51
EC	74.08 ± 21.95	104.1 ± 30.72	275.38 ± 111.73	325.49 ± 91.15	119.68 ± 16.94	158.62 ± 69.67
TDS	37.02 ± 10.56	55.03 ± 13.5	135.44 ± 55	163.15 ± 43.27	58.3 ± 15.22	92.92 ± 33.39
TUB	3.33 ± 1.37	3.57 ± 3.36	9 ± 16.67	12.43 ± 24.53	5.0 ± 2.65	5.17 ± 4.96
ALK	58.33 ± 22.32	70 ± 20.40	106.67 ± 35	170.71 ± 33.76	132 ± 24.98	136.17 ± 24.33
NH3-N	0.18 ± 0.18	0.14 ± 0.16	0.24 ± 0.19	0.22 ± 0.18	0.19 ± 0.19	0.18 ± 0.16
	0.13 ± 0.06	0.09 ± 0.06	0.11 ± 0.06	0.07 ± 0.05	0.09 ± 0.08	0.14 ± 0.22
NO3-N	1.35 ± 0.42	1.57 ± 0.24	1.52 ± 0.29	1.87 ± 0.81	1.47 ± 0.06	1.45 ± 0.16
	1.2 ± 6	2 ± 10	2.2 ± 11	2.33 ± 14	5 ± 15	1.83 ± 11