Appendix D. Pearson correlations (r) between tree-level variables and two independent dimensions of tree structure (PC1 and PC2) revealed by principal components analysis.
Tree-level variable |
PC1 |
PC2 |
Surface area of reiterated trunks and limbs |
0.98 |
0.12 |
Volume of main trunk |
0.98 |
0.09 |
Volume of branches, limbs, and reiterated trunks |
0.98 |
0.15 |
Surface area of main trunk |
0.97 |
0.12 |
DBH |
0.97 |
0.07 |
Standard deviation of appendage volume |
0.96 |
0.01 |
Mean appendage volume |
0.96 |
-0.03 |
Maximum appendage volume |
0.96 |
0.05 |
Standard deviation of appendage diameter |
0.96 |
-0.04 |
Volume of dead wood |
0.95 |
0.15 |
Maximum appendage diameter |
0.95 |
-0.08 |
Mean appendage diameter |
0.94 |
-0.11 |
Crown volume |
0.93 |
0.12 |
Tree height |
0.91 |
0.17 |
Ratio of standard deviation to mean appendage diameter |
0.87 |
0.05 |
Maximum appendage hierarchical rank |
0.85 |
-0.11 |
Dry mass of leaves on epicormic branches |
0.85 |
-0.07 |
Ratio of standard deviation to mean appendage volume |
0.85 |
0.11 |
Percentage total leaf dry mass on original branches |
-0.83 |
0.41 |
Percentage total leaf dry mass on epicormic branches |
0.60 |
-0.46 |
Ratio of leaf area to sapwood cross sectional area |
-0.51 |
0.65 |
Number of live branches |
0.29 |
0.70 |
Dry mass of leaves on original branches |
0.04 |
0.86 |
Ratio of cambium surface area to leaf area |
0.04 |
-0.87 |