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. 2002 Aug 12;99(17):11235–11240. doi: 10.1073/pnas.172700199

Table 2.

Orthogonal factors derived from principal components analysis (with varimax rotation) of BFL data, showing the coefficients for each habitat variable

Variable
Standardized rotated principal components
FC1 FC2 FC3 FC4 FC5 FC6
Ln (patch size) 0.57
Asqrt (% forest) −0.42
Ln (edge density) 0.40
Ln (isolation) 0.34
Ln (distance from edge) 0.67
Ln (elevation) −0.49
Ln (canopy height) 0.69
Asqrt (% con. canopy) 0.41
Asqrt (% dec. canopy) −0.44
Asqrt (% con. shrubs) 0.38
Asqrt (% dec. shrubs) 0.76
Asqrt (% saplings) −0.25 0.65
Asqrt (% total low veg) 0.32 0.54
Eigenvalue 2.99 1.65 1.30 1.16 1.06 0.97
Cumulative variance explained 0.23 0.35 0.46 0.55 0.62 0.71

Only coefficients ≥0.25 shown to simplify interpretation of the table. Asqrt, arcsin − square root; % Con. canopy, proportion of coniferous trees in the canopy; % Dec. canopy, proportion of deciduous trees in the canopy; % Con. shrubs, proportion of coniferous shrubs in understory; % Dec. shrubs, proportion of deciduous shrubs in understory; % total low veg, total proportion of ground covered by low vegetation.

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