Figure 8
From: Composition, structure and robustness of Lichen guilds

Guild contribution to network robustness. (a) Decay of global efficiency (and robustness) with increasing number of extinct species for different removal strategies. Centrality-based (yellow) removal of species affects the global path lengths and connectivity more than degree-based (green) or random removal of species (blue). (b) Surviving fraction of species in a cascading extinction event in the real (blue) and the bootstrapped (orange) data set. All simulations include 100 independent replicates in (a) and (b), with the solid lines representing the mean value of the distribution and the shaded area around it encompasses one standard deviation of the sample. In (c) we show the average betweenness centrality for the species in each guild, bars stand for the standard error in the distribution.