Quantifying Effects of Spatial Heterogeneity of Farmlands on Bird Species Richness by Means of Similarity Index Pairwise
Table 6
Different candidate models, ranked according to the AIC values, used to select the best models to relate bird richness to landscape, land-use, and crop types in farmlands of Central Italy.
Variables included in the model
Total number of variables
Scale level
AIC
Alt + slo + pow + shr + for + unc + bad + gra + hed + tre + urb + cul + ofo + whe + alf + hay + sun + cri + sug + cor + gar + oat + bra + let + land-use div
25
Landscape, land-use, crop type
424.53
Alt + slo + pow + shr + for + unc + bad + gra + hed + tre + urb + cul