Table 1.

Network properties of the 16 ECM plant taxa.

	H. halimifolium	Al. cordata	Salix sp.	Al. Alnobetula	Cistus sp.	Al. glutinosa	Po. alba	Co. avellana	B. pendula	Ca. sativa	Ab. alba	Pi. nigra subsp. laricio	F. sylvatica	Pi. pinaster	Q. suber	Q. ilex
kp	12	14	20	24	26	26	26	29	46	67	67	84	100	122	133	197
cp	5.92	3.64	5	2.5	4.58	3.08	6.04	7.03	5.65	6.16	5.04	4.83	4.58	3.87	4.26	3.41
lp	15	11	13	11	15	15	13	13	13	15	15	15	15	15	15	15
sp	59	37	80	36	93	54	131	175	214	346	271	322	358	350	434	474
nhs	1	2	8	13	7	8	18	3	14	1	18	2	29	27	1	39

k_p: degree in the bipartite network, i.e., the number of their fungal partner species; c_p: average number of host species of their symbionts; l_p: degree of plant species in their projected network; s_p: total number of links of a plant species within its projected network; n_hs: number of hyper-specialists, i.e., strictly associated fungal taxa. See Glossary for more complete definitions of network metrics.

The following abbreviations were used to indicate plant genera: Ab.: Abies; Al.: Alnus; B.: Betula; Ca.: Castanea; Co.: Corylus; F.: Fagus; H.: Halimium; Pi.: Pinus; Po.: Populus; Q.: Quercus.