Temporal variations in macroinvertebrate communities from the tributaries in the Three Gorges Reservoir Catchment, China

Table 1 Summary of the water parameters of the 27 main tributaries of TGRC

Seasons	SD(cm)	WT (°C)	pH	Chl a (μg/l)	DO (mg/l)	ORP (mv)	Cond (μS/cm)
Spring	131.69 ± 112.87^b	15.96 ± 1.84^b	8.31 ± 0.48^b	10.53 ± 25.06^c	9.00 ± 2.04^b	145.85 ± 45.44^a	134.21 ± 41.85^a
Summer	57.64 ± 49.24^a	22.35 ± 3.43^d	8.24 ± 0.28^a	5.82 ± 10.26^b	8.82 ± 1.89^b	143.85 ± 100.6^a	305.09 ± 141.79^c
Autumn	136.64 ± 52.03^c	20.02 ± 2.87^c	8.23 ± 0.38^ab	7.76 ± 10.21^c	7.26 ± 1.49^a	165.75 ± 22.62^b	288.23 ± 78.94b^c
Winter	239.69 ± 73.18^d	9.86 ± 3.30^a	8.26 ± 0.32^ab	1.15 ± 2.03^a	7.58 ± 0.77^c	154.12 ± 38.02^b	285.86 ± 66.19b^c
Chi-Square	163.955	420.838	5.844	174.943	119.062	33.568	270.117
p-value	<0.001	<0.001	0.119	<0.001	<0.001	<0.001	<0.001

Note: Different letters represent significant differences, same letters represent nonsignificant differences

ISSN: 0717-6317