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Table 2 Factor loadings of future climate variables (2050 and 2070) of selected 125 N2K PAs in Alpine 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 2050 (RCP4.5) Factor loadings 2070 (RCP8.5)
PC1 PC2 PC1 PC2
Ann temp − 0.14 0.36 − 0.19 0.33
M-temp range − 0.01 0.28 − 0.18 0.24
Isotherm − 0.22 0.25 − 0.09 0.34
Temp seas 0.29 − 0.01 − 0.18 − 0.15
Warmest m-temp − 0.04 0.40 − 0.24 0.28
Coldest m-temp − 0.22 0.29 − 0.12 0.35
Ann-temp range 0.25 0.08 − 0.22 − 0.05
Wettest q-temp − 0.12 0.13 − 0.11 − 0.06
Driest q-temp 0.10 0.26 − 0.14 0.24
Warmest q-temp − 0.04 0.38 − 0.24 0.29
Coldest q-temp − 0.21 0.31 − 0.14 0.36
Ann precip − 0.33 − 0.13 0.31 0.21
Wettest m-precip − 0.27 − 0.15 0.29 0.17
Driest m-precip − 0.31 − 0.15 0.31 0.14
Precip seas 0.28 − 0.03 − 0.21 − 0.17
Wettest q-precip − 0.28 − 0.16 0.31 0.16
Driest q-precip − 0.33 − 0.11 0.31 0.18
Warmest q-precip − 0.18 − 0.20 0.29 − 0.01
Coldest q-precip − 0.30 − 0.12 0.25 0.21