Spatial and temporal limnological changes of an aquaculture area in a neotropical reservoir

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Table 1

Parameters of water quality measured at collection sites and at different seasons.

	Seasons					p-value

Variables	Spring	Summer	Autumn	Winter	Mean sites	Seasons	Sites
pH	7.6 ± 0.5^b	8.2 ± 0.1^a	7.2 ± 0.1^b	8.2 ± 0.2^a	7.8 ± 0.2	0.0	0.9
DO (mg L⁻¹)	7.8 ± 1.5^b	3.8 ± 0.5^c	14.6 ± 3.2^a	8.7 ± 0.3^b	8.7 ± 1.4	0.0	0.9
Temperature (°C)	26.9 ± 3.2^a	28.5 ± 0.2^a	23.2 ± 0.1^b	19.8 ± 0.1^b	25.5 ± 0.8	0.0	0.9
EC (μS cm⁻²)	45.2 ± 25.1^a	10.1 ± 0.1^b	63.9 ± 6.7^a	48.8 ± 6.3^a	42.6 ± 9.5	0.0	0.9
Transparency (m)	0.7 ± 0.4^c	2.4 ± 0.2^a	1.6 ± 0.1^b	0.7 ± 0.1^c	1.3 ± 0.2	0.0	0.9

Data in the same row with different letters are significantly differ (p < 0.05) among different seasons.

DO = Dissolved oxygen.

EC = Electrical conductivity.

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