TABLE 2.

Alpha-diversity metrics based on the relative abundances of bacterial species found through (GTG)₅-PCR fingerprinting of genomic DNA.

Sample code	Simpson (D)	Pielou (Je)	Country of origin
TM31	0.50	1.00	BE
TM34	0.66	0.89	BE
TM46	0.50	1.00	BE
TM64	0.55	0.78	BE
TM67	0.61	0.91	BE
TM70	0.52	0.72	BE
TM71	0.50	1.00	BE
TM72	0.55	0.79	BE
TM73	0.50	1.00	BE
TM74	0.50	1.00	BE
TM77	0.50	1.00	BE
TM82	0.57	0.83	BE
TM60	0.56	0.82	DE
TM62	0.50	1.00	DE
TM76	0.50	1.00	DE
TM81	0.63	0.80	DE
TM10	0.66	0.87	ES
TM16	0.57	0.84	ES
TM35	0.78	0.88	ES
TM44	0.66	0.85	ES
TM50	0.50	1.00	ES
TM54	0.50	1.00	ES
TM56	0.50	1.00	ES
TM57	0.60	0.75	ES
TM59	0.64	0.84	ES
TM84	0.60	0.74	ES
TM85	0.50	1.00	ES
TM88	0.64	0.84	ES
TM91	0.50	1.00	ES
TM103	0.74	0.91	ES
TM104	0.50	1.00	ES
TM13	0.57	0.84	FR
TM15	0.64	0.82	FR
TM18	0.60	0.90	FR
TM19	0.61	0.92	FR
TM20	0.57	0.84	FR
TM21	0.50	1.00	FR
TM22	0.54	0.76	FR
TM23	0.64	0.75	FR
TM24	0.61	0.92	FR
TM25	0.58	0.86	FR
TM26	0.57	0.85	FR
TM28	0.57	0.84	FR
TM29	0.61	0.91	FR
TM39	0.64	0.85	FR
TM41	0.54	0.76	FR
TM45	0.57	0.84	FR
TM52	0.59	0.89	FR
TM55	0.53	0.75	FR
TM58	0.73	0.98	FR
TM65	0.62	0.78	FR
TM66	0.54	0.77	FR
TM69	0.60	0.68	FR
TM80	0.50	1.00	FR
TM90	0.74	0.90	FR
TM92	0.73	0.89	FR
TM95	0.57	0.85	FR
TM96	0.54	0.75	FR
TM98	0.61	0.92	FR
TM99	0.59	0.88	FR
TM100	0.62	0.93	FR
TM101	0.59	0.89	FR
TM102	0.69	0.91	FR
TM2	0.60	0.90	IT
TM7	0.53	0.74	IT
TM12	0.63	0.95	IT
TM27	0.67	0.87	IT
TM30	0.61	0.92	IT
TM32	0.59	0.89	IT
TM33	0.54	0.76	IT
TM37	0.62	0.94	IT
TM47	0.50	1.00	IT
TM61	0.50	1.00	IT
TM63	0.50	1.00	IT
TM79	0.72	0.95	IT
TM83	0.60	0.90	IT
TM86	0.50	1.00	IT
TM87	0.53	0.73	IT
TM89	0.66	0.85	IT
TM93	0.69	0.91	IT

The Simpson (D) and Pielou (Je) indexes were calculated for all the samples to measure their diversity and evenness, respectively. Samples are ordered according to their country of origin, which are indicated as BE (Belgium), DE (Germany), ES (Spain), FR (France), and IT (Italy).