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).