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Table 2 Factor loadings of the first two components (PC) of the principal component analysis on the landscape variables for high abundance (HA) and low abundance (LA) landscapes. Variance explained by each component is in brackets

From: Species co-occurrence and management intensity modulate habitat preferences of forest birds

Landscape variable

HA landscape

LA landscape

PC1 (44.43 %)

PC2 (18.20 %)

PC1 (46.29 %)

PC2 (14.93 %)

Aggregation index

0.49

0.06

0.46

0.30

Contiguity index

0.01

− 0.68

0.12

− 0.41

Core area

0.26

− 0.53

0.31

0.08

Edge density

− 0.41

0.09

− 0.43

− 0.25

Euclidean nearest neighbor distance

− 0.17

0.41

− 0.16

0.43

Landscape shape index

− 0.50

− 0.07

− 0.47

− 0.27

Forest cover

0.32

0.23

0.29

− 0.56

Conifer forest cover

0.37

0.11

0.41

− 0.30