Assortative and disassortative interaction networks of bipartite systems.

<p>50 plants (rows), 100 animals (columns). A black dot represents an interaction between the corresponding plant and animal. a) Assortative system (rhomboid model) with ; tends to connect generalist to generalist and specialist to specialist. b) The disassortative system (triangle model), , instead, tends to connect specialist to generalist. This last is the case sometimes called “asymmetric.”