FIGURES LEGENDS:
Figure 1 . Effect of the mean precipitation rate on the (a)
species richness, (b) connectance, (c) nestedness, and (d) modularity of
mutualistic networks representing interactions between ants and plants
bearing extrafloral nectaries. The species richness of networks
decreased with the decrease in the mean precipitation rate in the
habitat (mm), but no other predictor of the network structure varied
along the gradient. Each point represents one network, and the size of
each point indicates the species richness (S) of the respective network.
Figure 2 . Effect of the mean precipitation rate (m) on the
connectance (C) and resource range (RR) of dominant (a and c,
respectively), and subordinate ant species (b and d, respectively).\(C_{d}\) and \(C_{s}\) increased with the decrease in the habitat’ mean
precipitation rate (mm), while \(RR_{d}\) and \(RR_{s}\) did not vary
along the water gradient. Each point represents one network, and the
size is the richness (S) of each network.
Figure 3. Relationship between the mean precipitation rate (mm)
and the similarity in the patterns of dominant and subordinate ant
species interaction with plant species with extrafloral nectaries
(Jaccard index of similarity). Precipitation rate did not affect the
overlap between dominant and subordinate ant species visiting the plants
with EFNs. Each point represents one network, and the size is the
richness S of each network.