fig5

Figure 5. Spatial variation of water salinity (dS m^-1) in three sub-districts. The boxplots illustrate the distribution of electrical conductivity in (A) pond water and (B) canal water. The median and mean values of these parameters are represented by a solid line and a red circle within each box, respectively. The whiskers extend to the minimum and maximum values, excluding any outliers, which are displayed as individual data points outside the whiskers. The P-value obtained from the Kruskal-Wallis test indicates the level of significance in the observed variations of water salinity levels among the different sub-districts. The letters (a, b, and c) on the boxes indicate the significant differences in pairwise comparisons (e.g., Assasuni-Dacope) of water salinity. Asterisks (* and **) above the boxes signify the significance (P < 0.05 and P < 0.001) of the differences in the studied variables in each sub-district compared to their base mean (i.e., mean values of all sub-districts), which were derived using the Wilcoxon test, whereas the symbol "ns" represents the differences are insignificant. The dashed lines within the plots represent the mean values of water salinity in three sub-districts.