Table 3. Pearson correlation coefficients (r) between elevation and patch area and tree species richness (S), density (D) and seedling densities (d). Correlations with p < 0.05 are indicated with *, p < 0.01 indicated with **, ns = non-significant. Analyses were not conducted in southern Argentina because of the very low species richness values encountered. Source: Newton and Tejedor (2011).


Variables Study area
Veracruz Oaxaca Chiapas Central Chile
Elevation and S 0.83* -0.10 ns -0.12 ns 0.26 ns
Area and S -0.2 ns 0.77* -0.16 ns 0.16 ns
Elevation and D 0.85* 0.62* - 0.14 ns
Area and D 0.30 ns -0.38 ns - 0.04 ns
Elevation and d -0.22 ns 0.67* - 0.20 ns
Area and d -0.44 ns 0.44 ns - 0.36*