(a) Size-fractionated eDNA concentration (CX)
Random effect Groups Name Variance SD
Tank Intercept 0.508 0.713
Temperature Intercept 0.000 0.000
Marker Intercept 0.019 0.137
Residual 0.405 0.636
Fixed effects Variable Estimate SE P value
Intercept −0.147 0.333 0.662
log10(Biomass) 1.313 0.181 0.000***
Size fraction (3–10 µm) 0.713 0.240 0.003**
Size fraction (0.8–3 µm) 0.174 0.240 0.469
Size fraction (0.4–0.8 µm) −0.856 0.240 0.000***
log10(Biomass): Size fraction (3–10 µm) −0.185 0.137 0.176
log10(Biomass): Size fraction (0.8–3 µm) −0.578 0.137 0.000***
log10(Biomass): Size fraction (0.4–0.8 µm) −0.124 0.137 0.364