Fig 3 Relationship between plant species richness per site and
plant-bacteria network features (a, c& d ) or the ratio of
bacterial richness to plant richness(b ) in each site (vertical
axis). (a ) there is no significant trend between plant richness
and number of bacterial OTUs linked to each plant
species(P >0.05). (b ) All OTUs detected in
soil are included, not only those linked to plant species.
(P =< 0.001)