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