Journal of Ethnobiology and Ethnomedicine

Table 4 The correlation matrix of all the variables in the study (correlation coefficients in the lower left half, P values in the upper right half). Most correlations are expressed as Pearson r coefficient. Only correlations for area (printed in italics) were calculated using Spearman rs rank correlation coefficient (see explanation in the ‘Methods’ section)

From: The ethnobotany and biogeography of wild vegetables in the Adriatic islands

	No. of veg	Median no. of veg	Area^a	Population	Flora	Longitude	Isolation^b
No. of veg		2.6E−05	0.75	0.21	0.37	0.11	0.57
Median no. of veg	0.87		0.96	0.15	0.48	0.06	0.67
Area^a	0.09	− 0.01		− 0.03	0.07	0.45	0.15
Population	0.34	0.39	0.55		0.09	0.73	0.01
Flora	− 0.26	− 0.21	0.49	0.47		0.14	0.55
Longitude	0.42	0.50	− 0.17	− 0.10	− 0.42		0.47
Isolation^b	− 0.15	− 0.12	− 0.39	− 0.63	− 0.18	0.20

^aFor this variable, Spearman rs (rank correlation) coefficient was calculated
^bThis variable was log-transformed in order to achieve normal distribution

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ISSN: 1746-4269

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