RESULTS
The richness and beta diversity of ichthyofauna had a significant
spatial structure with values of Moran’s I higher than 0.1 (Table 2).
Richness of omnivores showed the greatest degree of spatial structure
(Moran’s I=0.316, p<0.001), and the richness of detritivores
the lowest (Moran’s I=0.120, p=0.010). The beta diversity of the
detritivores, insectivores and omnivores presented non-significant
effects of spatial autocorrelation.
Table 2. Autocorrelation index of Moran (Moran’s I) performed
by richness and beta diversity for all community and trophic guild.
Moran’s I - Autocorrelation index of Moran; p - Type one error
probability; I (max) - The highest value of Moran’s I to the variable;
I/I(max) - The Moran’s I corrected by maximum value.