Figure 4. Relationships between the environmental variables and the behavioral diversity metrics (divergence, evenness and richness) in the Anisoptera. The continuous lines represent positive relationships and the dashed lines, negative ones. The darker the arrow, the higher the beta value. The values presented refer to the beta values of multiple regressions. V1 habitat integrity index, V2 electrical conductivity, V3 dissolved oxygen, V6 litter, V8 riparian canopy, V12 substrate D50, V15 large woody debris in channel, V21 substrate of fine sediment, V26 mean catchment