Figure 2
From: Monitoring spawning migrations of potamodromous fish species via eDNA
Relationship between eDNA concentrations/signals and discharge corrected fish counts. The left panel displays eDNA concentrations (copies/µl extract) obtained at sampling point 1 and discharge corrected fish counts of the whole river stretch plus model DD3. The middle panel shows RFUs obtained at sampling point 1 and discharge corrected fish counts of the whole river stretch combined with model EP3; 95% confidence areas of the models are depicted in grey. The right panel displays eDNA signals (RFU) obtained from sampling point 2 plotted against the sum of mean fish counts of section III and upstream (discharge corrected). The black line depicts EP3 fitted to the displayed data (R² = 0.58). The red, dashed line shows the optimum model obtained from this data (sub)set (EP4), which remains inside the confidence limits of model EP3 for the entire data range. X-axes of the middle and right panels are scaled logarithmically.
