Figure 4 in Invasive Carassius spp. in the Tiber River basin (Umbria, Central Italy): population status and possible interactions with native fish species

Figure 4. – Canonical Correspondence Analysis: plot of the densities of native and non-native species. The eigenvalues of axes 1 and 2 were 0.249 and 0.046, respectively. The first two axes explained 73.70% of the total variance.