Interaction rewiring and the rapid turnover of plant-pollinator networks
Abstract
Paul J. CaraDonna,1,2,3,4* Whether species interactions are static or change over time has wide-reaching ecological and evo- William K. Petry,1,5,6 lutionary consequences. However, species interaction networks are typically constructed from tem- Ross M. Brennan,1,7 porally aggregated interaction data, thereby implicitly assuming that interactions are fixed. This James L. Cunningham,1,2 approach has advanced our understanding of communities, but it obscures the timescale at which Judith L. Bronstein,2 interactions form (or dissolve) and the drivers and consequences of such dynamics. We address Nickolas M. Waser1 and this knowledge gap by quantifying the within-season turnover of plant–pollinator interactions Nathan J. Sanders1,3,8 from weekly censuses across 3 years in a subalpine ecosystem. Week-to-week turnover of interac- tions (1) was high, (2) followed a consistent seasonal progression in all years of study and (3) was dominated by interaction rewiring (the reassembly of interactions among species). Simulation models revealed that species’ phenologies and relative abundances constrained both total interac- tion turnover and rewiring. Our findings reveal the diversity of species interactions that may be missed when the temporal dynamics of networks are ignored.
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References (74)
3 in Knowledge Hub, 71 external