Fig. 4.

Regional indigenous knowledge metaweb and its robustness to the extinction of plants and knowledge. Matrix rows and columns indicate plant species and services, respectively, across the entire area of study, whereas dots depict that a particular plant species is employed for that specific service. The color of dots denotes the number of communities that cite a given plant–service link. The metaweb is made up of 120 plant species, 250 services, and 1,743 links. (Inset) Robustness of the metaweb, measured as the size of the largest component, to the selective removal of an increasing fraction of plant nodes, links (indicating knowledge), and both plant nodes and links. For names of plant species and services, see SI Appendix, Fig. S4.