. 2007 May;99(5):895–906. doi: 10.1093/aob/mcm023

Table 4.

Matrix of correlation coefficients (r) between pairs of physico-chemical attributes using species mean data of the leaf and pitcher as two independent data points for each of the bivariate relationships

Trait	Thickness	TMA	Density	N	P	K	C	Ash	H_c	CC_mass	CC_area
Thickness	–	0·48^†	− 0·49*	−0·30	−0·22	0·09	−0·43	0·23	−0·38	−0·31	0·37
TMA		–	0·50*	−0·16	−0·17	− 0·59**	0·29	−0·43^†	0·18	0·26	0·94***
Density			–	0·19	0·03	− 0·69**	0·72*	− 0·67*	0·62**	0·61**	0·55*
N				–	0·72**	0·06	0·34	0·03	0·21	0·14	0·09
P					–	0·23	0·26	0·34	−0·35	−0·41	−0·26
K						–	− 0·78**	0·82**	− 0·72**	− 0·78**	− 0·71**
C							–	− 0·75*	0·91***	0·90**	0·39
Ash								–	− 0·82**	− 0·89**	− 0·60*
H_c									–	0·98***	0·39
CC_mass										–	0·48^‡
CC_area											–

n = 16, except for correlation with C where data are not available for N. rafflesiana var. typical and hence n = 14.

Significant trends are highlighted in bold. ^†P < 0·10; *P < 0·05; **P < 0·02; ***P < 0·01.