Catch per unit effort (CPUE; total number of signal and red swamp crayfish captured per year per pool, standardised per 100 trap nights). Note: In 2019, only one round of sampling took place in autumn. Missing lines for a species indicate that the species was not detected in the corresponding pool during the study period. Crayfish captured during draining events not included in this figure. N = nature pool, U = urban pool, T = trapping only, E = trapping + eel treatment, D = trapping + draining treatment. Pool labels correspond with those in Figure 1.