Ecological Archives M078-010-A4

Robert Van Pelt and Stephen C. Sillett. 2008. Crown development of coastal Pseudotsuga menziesii, including a conceptual model for tall conifers. Ecological Monographs 78:283–310.

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


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