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Distribution of links between ants and extrafloral nectary-bearing plants at La Mancha, Mexico. The hotter the colour, the higher is the number of species interactions between ant subfamilies and plant families (A, C, E) and between ant and plant genera (B, D, F). (A, B) 1990 network, (C, D) 2000 network, (E, F) 2010 network.
