Figure S2: Modularity and nestedness trends in response to the primary removal of taxa according to five different removal sequences:Sensitivity = decreasing sensitivity to fishing, Centrality= decreasing eigenvector centrality values, Exposure = decreasing exposure to fishing, Preys = decreasing number of prey,Predators = decreasing number of predators
Modularity is positively associated with robustness, with perturbation spread hindered by the modules. Modularity of the Celtic Sea trophic network has low values (0.20) with modularity ranging from 0 (no modules) to 1 (strong community structure) with typical values usually spanning from 0.3 to 0.7 (Newman & Girvan 2004). Finally, nestedness occurs when the diet of specialist is a subset of generalists. It has medium values in the Celtic Sea (45.31) with 0 indicating full complementarity of trophic links between taxa and 100 completely nested links (Almeida-Neto et al. 2008).