Table 2 Correlation coefficients between PCA scores and bioclimate variables (BIO) and absolute projected area of space in the infratemporal fossae on the Frankfurt horizontal plane (ITPF). This table indicates only correlations greater than 0.3 and 0.4 (bold cells: greatest values in BIO) at the significant levels greater than 0.01. Partial correlation coefficients with BIO (Bold) and ITPF are given respectively in case that PCA scores are correlated to both kinds of variables.
PCA | BIO 1 | BIO 10 | BIO 11 | BIO 12 | BIO 16 | BIO 17 | ITPF | Partial Corr. Coef. | |
|---|---|---|---|---|---|---|---|---|---|
Annual mean temp. | Mean temp. warmest quarter | Mean temp. coldest quarter | Annual precipitation | Precipitation of wettest quarter | Precipitation driest quarter | Space of infratemporal fossae | Corr. with ITPF when BIO fixed | Corr. with BIO when ITPF fixed | |
Pattern A: Coefficients based on the data set consisting of all regional samples (405 individuals) | |||||||||
PC1 | − 0.3242 | − 0.3005 | − 0.3160 | – | – | – | 0.4640 | 0.4029 | − 0.2236 |
PC3 | 0.3592 | – | 0.3741 | – | – | – | − 0.3050 | − 0.2210 | 0.313 |
PC4 | – | – | – | – | – | – | − 0.3208 | – | – |
Pattern B: Coefficients based on the data set excluding assumable descendants from Neolithic agricultural migrants (236 individuals) | |||||||||
PC1 | − 0.4060 | − 0.3506 | − 0.4071 | – | – | – | 0.5080 | 0.8151 | − 0.2501 |
PC3 | 0.4166 | 0.3324 | 0.4254 | – | 0.3015 | – | − 0.3936 | − 0.2630 | 0.3130 |
PC4 | 0.3042 | – | – | – | – | – | – | – | – |
PC6 | – | – | – | – | – | – | − 0.3007 | – | – |
PC12 | − 0.3308 | – | − 0.3330 | – | – | – | – | – | – |
Pattern C: Coefficients based on the data set excluding American natives and assumable descendants from Neolithic agricultural migrants (160 individuals) | |||||||||
PC1 | − 0.3990 | − 0.3189 | − 0.4167 | – | – | – | 0.4263 | 0.6445 | − 0.3299 |
PC2 | 0.4248 | – | 0.4607 | – | 0.3196 | – | – | – | – |
PC3 | 0.3869 | 0.3017 | 0.4050 | – | – | – | − 0.3345 | − 0.2394 | 0.3356 |
PC4 | 0.3609 | 0.3413 | 0.3482 | – | – | – | − 0.3061 | − 0.2154 | 0.2913 |
PC6 | – | – | – | – | – | – | − 0.3115 | – | – |
PC12 | − 0.3742 | − 0.3270 | − 0.3752 | – | – | – | – | – | – |
