Figure 4

Relationship between total () and reciprocated (
) or non-reciprocated (
) strength in four weighted networks in increasing order of reciprocity ρ: (a) the Everglades Marshes foodweb, (b) the neural network of C. elegans, (c) the World Trade Web in the year 2000 and (d) the social network of a fraternity at West Virginia College (black: real data, green: Weighted Configuration Model, red: Balanced Configuration Model).