Fig. 3. Multidimensional scaling plot showing the social network structure of relations among groups based on predefined occupational categories. The size of each node is proportional to the group size, and the thickness of the links is proportional to the strength of the intergroup relations, i.e., the ratio of the observed vs. the expected number of relations. Thin line < 0.5, medium line < 1, thick line > 1. Worth noting is that no direct exchange between fisher categories Seine net and Gill net occurs.