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. 2015 Aug 25;3:e1111. doi: 10.7717/peerj.1111

Table 1. Environmental parameters.

Mean (±standard error) of discrete water quality samples collected at each site during each sample event (n = 627). Letters after means indicate significant differences between regions within years (p < 0.05).

Year 1 Year 2 Year 3
North South West North South West North South West
Temperature (°C) 26.4 (0.7) 24.8 (0.8) 25.1 (0.7) 24.1 (1.3) 23.2 (1.3) 23.3 (1.4) 22.9 (1.1) 22.5 (1.3) 22.3 (1.4)
Dissolved oxygen (mg L−1) 7.5 (0.2) 7.4 (0.3) 7.4 (0.2) 6.7 (0.4) 6.4 (0.4) 7.6 (0.6) 8.2 (0.4) 8.5 (0.6) 8.9 (0.5)
Salinity 9.3 (0.6)a 13.3 (0.7)b 8.9 (0.7)a 9.5 (0.7)a 12.1 (0.6)b 9 (0.7)a 11.7 (0.9) 13.9 (1.1) 11.1 (0.9)
Secchi depth (cm) 35 (2.1)a 42.4 (2.2)b 37.1 (1.3)a 47.9 (2.6)a 49 (1.6)a 36.1 (2.3)b 41.8 (2.4)a 55.1 (3.6)b 47 (2.3)a