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Table 2 Principal component (PC) loadings for variables derived from a cost surface and a current density map

From: Multi-species genetic connectivity in a terrestrial habitat network

Variable Descriptiona

PC1b

PC2

PC3

PC4

Mean Cost (6 km)

−0.360

−0.115

0.261

−0.421

Mean Cost (20 km)

−0.424

−0.105

−0.013

0.306

Mean Cost (120 km)

−0.322

−0.096

−0.530

−0.136

Standard Deviation of Cost (6 km)

−0.380

−0.044

0.311

−0.341

Standard Deviation of Cost (20 km)

−0.426

−0.095

−0.017

0.333

Standard Deviation of Cost (120 km)

−0.332

−0.096

−0.527

−0.077

Mean Current (6 km)

0.075

0.418

−0.270

0.260

Mean Current (20 km)

0.012

0.474

−0.154

−0.250

Mean Current (120 km)

−0.079

0.432

−0.035

−0.364

Standard Deviation of Current (6 km)

−0.242

0.282

0.366

0.104

Standard Deviation of Current (20 km)

−0.250

0.347

0.196

0.442

Standard Deviation of Current (120 km)

−0.132

0.401

−0.076

−0.090

  1. aNumbers in parenthesis indicate the diameter of a buffer over which estimates were calculated
  2. bValues with bold font indicate the major contributors of the principal component