Note. All the studies collecting eDNA by filtration or centrifugation
measured eDNA quantity by real-time or digital PCR. All the
metabarcoding studies collected aqueous eDNA by filtration. Amplicon
size was not reported in Salter et al. (2019) because they used a
commercial kit.
Table 2. Summary of a GLMM with MCMC algorithm assessing the effects of
multiple factors on R2 values (Fisher’s
z-transformed).