Figure 7. Patterns of earthworm beta diversity at different spatial scales in rainforests of French Guiana: (A) Community network; line thickness is proportional to the Sørensen similitude between pairs of communities; (B) Occurrence histogram showing the number of OTUs per occurrence class (i.e. number of landscapes in which each OTU was observed); blue line represents the exponential decay regression curve; (C) Sørensen's beta diversity between pairs of earthworm communities partitioned into different levels, with beta A = beta diversity between communities within the same habitat and landscape, beta B = beta diversity between communities of different habitats in the same landscape, beta C = beta diversity between communities from different landscapes.