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Table 1 Mean of the water quality parameters on each sampling date. Data for the natural hypersaline reference state were obtained from Vidal-Abarca (1985).

From: Response of biotic communities to salinity changes in a Mediterranean hypersaline stream

  2003 disturbed conditions 2004 re-established conditions 1983 Reference conditions
Water quality variables J3 O3 J4 O4 July
Maximum daily temperature (° C) 31.4 26.2 33.7 29.3 35
Minimum daily temperature (° C) 20.1 19.2 20.3 12.3  
Mean daily temperature (° C) 25.1 21.9 25.5 19.4  
Discharge (L s-1) 31.48 262.16 33.47 13.23  
Conductividad (mS cm-1) 11.81 6.4 69.3 99 170
Salinity (g L-1) 6.8 3.5 47.5 76.4 100
Maximum dissolved oxygen (mg L-1) 16.45 23.1 16.78 18.17  
Minimum dissolved oxygen (mg L-1) 2.22 5.89 2.3 4.91  
Mean oxygen saturation (%) 116.43 111.7 143.69 152.98  
Suspended solids (mg L-1) 1.63 8.15 3.64 5.5  
Chlorophyll a (mg L-1) 4.22 1.52 25.12 0.83  
NO3-N (mg L-1) 0.22 1.98 1.47 0 1.13
NO2-N (mg L-1) 0.018 0.011 0.23 2.34 0.1
NH4-N (mg L-1) 0.25 0.15 0.89 2.69 0.63
DIN (mg L-1) 0.49 2.14 2.59 5.03 1.86
PO4-P (μg L-1) 8.68 10.78 0 1.61 0.5