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Fig. 2 | Ecological Processes

Fig. 2

From: Using hierarchical spatial models to assess the occurrence of an island endemism: the case of Salamandra corsica

Fig. 2

Principal component analysis scatter-plot, representing the multidimensional niche opposing the sites of presence and absence. The ellipsoids represented the 95% confidence intervals. Blue triangles, presence; orange circles, absence. Explained variance PC1 = 11.02%, PC2 = 9.24%, PC3 = 7.89%. To improve clarity, it is shown only these variables with the highest absolute loadings: ACT (aciculifolious tree), ELE (elevation, masl), PEG (perennial grass), PEL (perennial liana), TMA (maximum temperature of the month of July, °C)

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