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Table 3 Factor loadings of climate variables (current climate and 2070) of selected 404 N2K PAs in the Boreal biogeographical region on PCA axes 1 and 2

From: Predicting the effectiveness of protected areas of Natura 2000 under climate change

Climate Variable Factor loadings Current climate Factor loadings 2070
(RCP 8.5)
PC1 PC2 PC1 PC2
Ann temp − 0.26 − 0.23 − 0.27 − 0.25
M-temp range 0.21 0.11 0.16 − 0.02
Isotherm − 0.14 0.02 − 0.18 − 0.16
Temp seas 0.26 0.07 0.28 0.11
Warmest m-temp − 0.15 − 0.35 − 0.17 − 0.33
Coldest m-temp − 0.27 − 0.18 − 0.29 − 0.21
Ann-temp range 0.27 0.09 0.29 0.11
Wettest q-temp − 0.05 − 0.15 0.11 − 0.16
Driest q-temp − 0.25 − 0.16 − 0.24 − 0.04
Warmest q-temp − 0.21 − 0.32 − 0.22 − 0.29
Coldest q-temp − 0.27 − 0.18 − 0.29 − 0.22
Ann precip − 0.27 0.21 − 0.28 0.24
Wettest m-precip − 0.17 0.36 − 0.16 0.33
Driest m-precip − 0.22 0.26 − 0.21 0.26
Precip seas 0.22 0.03 0.13 0.01
Wettest q-precip − 0.23 0.29 − 0.23 0.31
Driest q-precip − 0.26 0.22 − 0.24 0.28
Warmest q-precip − 0.14 0.38 − 0.09 0.28
Coldest q-precip − 0.26 0.17 − 0.27 0.21