WCD Salinity pH DO Ca Mg Cl SO4 PO4 NO2 NO3
Salinity -0.4 1.0                  
pH 0.1 0.1 1.0                
DO 0.1 0.0 0.6 1.0              
Ca -0.5 0.4 -0.2 -0.2 1.0            
Mg -0.3 0.3 -0.2 -0.2 0.3 1.0          
Cl -0.3 0.6 -0.1 -0.2 0.3 0.3 1.0        
SO4 -0.2 0.1 -0.5 -0.3 0.1 0.2 -0.1 1.0      
PO4 -0.2 0.1 0.0 -0.2 -0.2 0.1 0.1 0.2 1.0    
NO2 0.1 0.0 0.3 0.2 0.0 -0.1 0.3 -0.1 0.1 1.0  
NO3 0.0 -0.1 0.0 -0.1 -0.2 0.0 0.1 0.0 0.2 0.6 1.0
SiO2 0.4 0.0 0.1 0.2 0.0 0.0 -0.1 0.0 0.3 0.1 0.0
Table 2: Matrix of Pearson correlation coefficient for water quality parameters, major ions and inorganic dissolved nutrients concentrations for the selected re-flooded marshes in the Mesopotamia