Figure 7.

Correlation heatmap of the top 20 ranked bacterial phyla and water and sediment physicochemical properties across different lakes. Positive and negative correlations are indicated in red and blue, respectively (‘*’ indicates 0.01 < p ≤ 0.05; ‘**’ indicates 0.001 < p ≤ 0.01; ‘***’ indicates p ≤ 0.001). Correlations between variables were calculated using the Pearson correlation coefficient. TC: total carbon in sediment; TN: total nitrogen in sediment; TP: total phosphorus in sediment; WT: water temperature; DO: dissolved oxygen; Conductivity: electrical conductivity; pH: pondus hydrogen; WTP: total phosphorus in water; WTN: total nitrogen in water; NH₄⁺: ammonia nitrogen; NO₃⁻: nitrate nitrogen; NO₂⁻: nitrous nitrogen; COD: chemical oxygen demand; Chla: chlorophyll a; SS: suspended solids. The R values are displayed in various colors within the heatmap, with p-values below 0.05 marked by an asterisk (*). The legend on the right shows the color scale for different R values.