Fig 1.
Wild boar density by administrative units (original input data) and wild boar range.
Table 1.
Predictor variables included in the wild boar model-building process.
Fig 2.
Flowchart illustrating the 4 main steps of the wild boar (WB) density modelling approach.
Fig 3.
Bioclimatic regions for the wild boar as defined by PCA and cluster analysis.
The cluster plot of the first and second components is shown in the inset. The symbols represent the administrative units grouped in the 4 clusters/regions: Asian (red), eastern (pink), western (green) and southern (blue).
Table 2.
Results of the multiple regression models by bioclimatic region: Standardized coefficients and standard errors (in brackets), adjusted R2, sample size (N), F value and degrees of freedom (dfs), residual standard error (RSE) and p-values.
Fig 4.
Trend components derived from the regression relationship obtained for (A) the eastern, (B) western and (C) southern regions and extrapolated to the whole study area respectively. (D) Redefined bioclimatic regions and blending zones. The Asian region is not shown as it was excluded from the geostatistical analysis.
Fig 5.
Model outputs: average trend (A), average geostatistical model (B) and mosaicked model (C).
Table 3.
Validation results.