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. 2011 Jun 8;6(6):e19992. doi: 10.1371/journal.pone.0019992

Table 2. Summary of ahistorical and phylogenetically independent contrast (PIC) correlations among A) within-community (α), B) among-community (β) and C) total (Inline graphic) components of trait variation for 76 plant species (68 contrasts) in Alberta grasslands.

A. Within-community (α) Height SLA Leaf size Leaf thickness Leaf tissue density SRL Root tissue density Root diameter
Height −0.09 0.3 0.14 −0.05 −0.28 0.03 0.29
SLA −0.11 −0.21 −0.35 −0.6 0.27 0.2 −0.42
Leaf size 0.46 −0.13 0.31 −0.08 −0.3 −0.09 0.37
Leaf thickness 0.17 −0.24 0.3 −0.53 0.04 −0.3 0.11
Leaf tissue density −0.04 −0.58 −0.14 −0.64 −0.28 0.08 0.28
SRL −0.32 0.15 −0.42 −0.05 −0.07 −0.4 −0.83
Root tissue density 0.07 −0.03 −0.15 −0.31 0.29 −0.28 −0.15
Root diameter 0.29 −0.13 0.52 0.23 −0.09 −0.8 −0.34

Cell contents are correlation coefficients. Below-diagonal values are ahistorical correlations, above-diagonal values are PIC correlations. Bold cells indicate correlations with P-value<0.05.