The Spearman rank correlation coefficients between the numbers of seven encountered amphibian species and numbers of two crayfish species in pools in natural and urban areas. The correlation values range from −1 to 1, where negative values indicate an inverse relationship, positive values indicate a direct relationship, and values close to 0 suggest a minor to no correlation. Asterisks (*) next to the correlation values indicate statistically significant correlations with a p‐value less than 0.05. ‐“N/A” values represent cases where there was insufficient data to calculate the Spearman correlation. The data are visualised as a heatmap, with a colour gradient from red (negative correlations) to green (positive correlations), with white indicating no correlation.