The Relationship between Benthic Macroinvertebrate Assemblages and Water Quality Parameters in the Sanyati Basin, Lake Kariba, Zimbabwe

Table 2

Mean (±SE) of physicochemical parameters measured at six sites in Sanyati basin (Lake Kariba) for the period January-March 2018.

Parameters	S1	S2	S3	S4	S5	S6	Kruskal-Wallis
							H
Temperature (°C)	28.6 ± 1.87^a	28.4 ± 4.08^a	28.2 ± 1.46^a	28.1 ± 1.40^a	28.9 ± 1.88^a	23.1 ± 0.33^a	9.67	0.085
pH	7.8 ± 0.16^a	8.2 ± 0.07^a	8.1 ± 0.14^a	8.0 ± 0.09^a	8.0 ± 0.16^a	7.3 ± 0.05^b	11.93	0.036
Conductivity (μScm^−1)	125.0 ± 1.14^a	101.1 ± 1.97^b	102.5 ± 2.24^b	103.4 ± 1.16^b	113.2 ± 4.8^c	93.44 ± 0.62^d	17.71	0.003
Turbidity (NTU)	23.6 ± 1.05^a	20.3 ± 1.38^a	20.4 ± 1.07^a	29.9 ± 0.85^a	25.4 ± 3.92^a	8.9 ± 0.86^b	16.72	0.005
DO (mg/L)	3.3 ± 0.31^a	8.0 ± 0.30^b	8.1 ± 0.12^b	7.8 ± 0.26^b	4.5 ± 0.68^a	9.4 ± 0.45^b	19.14	0.002
NH4-N (mg/L)	0.15 ± 0.01^a	0.07 ± 0.01^b	0.08 ± 0.01^b	0.10 ± 0.01^b	0.15 ± 0.02^a	0.005 ± 0.002^c	20.93	0.001
NO3-N (µ/L)	23.2 ± 0.68^a	16.33 ± 0.85^b	17.1 ± 0.16^b	17.9 ± 0.52^b	25.6 ± 3.36^a	6.3 ± 0.70^c	16.45	0.006
TN (mg/L)	0.92 ± 0.06^a	0.79 ± 0.02^b	0.54 ± 0.02^c	0.55 ± 0.01^c	0.86 ± 0.09^a	0.49 ± 0.03^c	17.66	0.003
PO4-P (µ/L)	29.1 ± 0.49^a	12.9 ± 0.63^b	13.4 ± 0.66^b	12.3 ± 0.52^b	21.7 ± 3.48^a	7.0 ± 0.53^c	17.73	0.003
TP (mg/L)	0.15 ± 0.004^a	0.08 ± 0.002^b	0.09 ± 0.004^b	0.08 ± 0.001^b	0.10 ± 0.001^b	0.05 ± 0.003^c	18.59	0.002