Monitoring European wildcat Felis silvestris populations using scat surveys in central Spain: are population trends related to wild rabbit dynamics or to landscape features?

Zoological Studies

Table 2 Orthogonal factors obtained from a principal component analysis using landscape variables at each survey location ( n = 39)

Variable	Factor 1	Factor 2
Pastureland cover	0.85^a	0.06
Cropland cover	−0.95^a	−0.00
Scrubland cover	0.86^a	0.02
Forest cover	0.72^a	−0.21
Urban cover	0.01	0.99^a
Roughness index	0.89^a	0.06
Number of watercourses	0.82^a	0.01
Eigenvalue	4.366	1.028
Percentage of explained variance	62.37	14.69

^aIndicates a significant correlation (p < 0.05) of the original variables with the extracted factor.