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Table 1 Descriptive statistics (mean ± standard error) of the environmental variables. n = number of sites

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

Variables Scale Presence Absence
n   35 31
Annual precipitation (mm year−1) 1000 m 728 ± 11 617 ± 13
Enhanced Vegetation Index July 500 m 0.57 ± 0.03 0.40 ± 0.02
Maximum temperature July (°C) 1000 m 24.6 ± 0.4 27.8 ± 0.2
Minimum temperature January (°C) 1000 m 1.1 ± 0.3 5.0 ± 0.2
Water vapor pressure July (kPa) 1000 m 1.7 ± 0.0 1.9 ± 0.0
Elevation (masl) 15 m 590 ± 59 54 ± 10
Terrain ruggedness 250 m 161 ± 11 47 ± 6
Aciculifolious bush 30 m 10 ± 7 28 ± 17
Aciculifolious tree 30 m 165 ± 56 19 ± 10
Alien plants % 30 m 9.5 ± 3.1 3.8 ± 2.0
Deciduous broad-leaved bush 30 m 11 ± 2 11 ± 3
Deciduous broad-leaved tree 30 m 416 ± 55 38 ± 13
Deciduous liana 30 m 21 ± 7 0.3 ± 0.2
Equisetum 30 m 0.1 ± 0.1 0.1 ± 0.1
Fern 30 m 27 ± 5 2 ± 1
Lycophyte 30 m 0.2 ± 0.2 0.0
Perennial broad-leaved bush 30 m 154 ± 22 240 ± 33
Perennial broad-leaved tree 30 m 287 ± 36 242 ± 38
Perennial grass 30 m 42 ± 7 42 ± 12
Perennial liana 30 m 72 ± 10 56 ± 12
Sub-shrub 30 m 31 ± 6 49 ± 6