Species turnover and interaction rewiring shape seasonal dynamics of bee‐plant networks in Neotropical coastal dunes

Abstract Pollination networks are dynamic systems influenced by seasonal changes in species abundances, phenology and resource availability. However, the extent to which these temporal changes influence network structure and the relative contribution of individual species remains unclear. Here, we conducted a year‐long study to assess how temporal variation influences the structure and composition of species and interactions in bee‐plant networks within Neotropical coastal dunes in the Gulf of Mexico. We found that bee and plant richness, the number of interactions, and network parameters such as specialisation, nestedness and modularity varied seasonally. Only plant species richness showed a significant positive correlation with precipitation ( R 2 = 0.56, F = 5.82, p < 0.05). While species turnover was the main driver of beta diversity in both bees (mean ± SD: β sp = 0.48 ± 0.15; β ne = 0.11 ± 0.10, t = 12.56, df = 65, p < 0.001) and plants (mean ± SD: β sp = 0.65 ± 0.15; β ne = 0.064 ± 0.061, t = 24.47, df = 65, p < 0.001), interaction beta diversity was primarily driven by interaction rewiring (mean ± SD: β sp = 0.36 ± 0.14; β RW = 0.45 ± 0.14, t = 3.88, df = 131, p < 0.001). Notably, a few species consistently contributed to network structure across months. Our results suggest that bee turnover, rather than plant availability, drives seasonal shifts in interaction network beta diversity, providing deeper insights into the effects of temporal variability and species roles in plant‐pollination networks.