When the community was partitioned into trophic guilds, richness and beta diversity of insectivorous and omnivorous species presented the spatial eigenvalues maps, performed from the Local W matrix, as the best representation of spatial processes (Table 4). However, for detritivores the W Hydalt model was the best representation of spatial processes (Appendix 3).
Table 4. Linear regression models between trophic guilds of Cerrado stream ichthyofauna and PCA axes performed with averages and standard deviation of environmental conditions. r2 - Correlation coefficient; F -Fisher‘s F; p - Type one error probability; AIC - Information criteria of Akaike; Δ AIC - Akaike variation; CN - Condition Number; Moran’s I - Autocorrelation index of Moran for variable; Res Moran’s I - Autocorrelation index of Moran for residual; A.B - Environmental component; A:B - Shared Component; B.A - Spatial Component;1-(A+B) – Residual