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. 2015 Dec 28;117(2):349–361. doi: 10.1093/aob/mcv178

Table 3.

Correlations of mechanical traits with other leaf traits. The data are Pearson correlation coefficients (RP), with asterisks indicating the significance level (*P < 0·05; **P < 0·01; ***P < 0·001; n = 20 for all traits except those from tearing tests, for which n = 17). All mechanical traits were log-transformed for statistical analysis

Mechanical traits SLA Water NDF Nmass Total phenolics Tannin activity
Shear tests
 Work –0·76*** –0·62** 0·84*** –0·70** 0·04 0·24
 Specific work –0·60** –0·66** 0·85*** –0·64** 0·01 0·27
Punch tests: lamina
 Strength –0·83*** –0·57** 0·80*** –0·73*** –0·10 0·02
 Specific strength –0·47* –0·63** 0·65** –0·52* 0·09 0·25
 Work –0·84*** –0·53* 0·79*** –0·74*** 0·02 0·18
 Specific work –0·73*** –0·61** 0·80*** –0·70** 0·07 0·26
Tear tests
 Force per width –0·63** –0·50* 0·65** –0·55* –0·10 0·10
 Strength –0·44 –0·52* 0·61* –0·42 –0·08 0·10
 Work –0·47 –0·22 0·54* –0·38 –0·14 0·08
 Specific work –0·13 –0·15 0·43 –0·13 –0·12 0·08