Data from: Diet complementation as a frequency‐dependent mechanism conferring advantages to rare plants via dispersal
Morán López, Teresa, National University of Comahue
Carlo, Tomas A., Pennsylvania State University
Amico, Guillermo, National University of Comahue
Morales, Juan Manuel, National University of Comahue
Published Jun 04, 2019 on Dryad.
Cite this dataset
Morán López, Teresa; Carlo, Tomas A.; Amico, Guillermo; Morales, Juan Manuel (2019). Data from: Diet complementation as a frequency‐dependent mechanism conferring advantages to rare plants via dispersal [Dataset]. Dryad. https://doi.org/10.5061/dryad.vf62744
1. We used an agent-based model to test the hypothesis that diet complementation by frugivores can promote the persistence of rare plant species in communities (DCH). 2. Models simulated bird movement, frugivory, seed-dispersal, and plant recruitment on landscapes that differed in their degree of fragmentation and in their degree of fruiting species mixing at the scale of frugivores’ foraging decisions. 3. Diet complementation promoted the dispersal of rare-species without the need of a priori preference from birds. The effects of landscape structure on the dispersal of rare plants were small (<5%) compared to positive effects of diet complementation because birds tracked the nutrients contained in rare fruits to balance their diets. However, resource-tracking of rare fruits increased foraging costs up to 20% of net energy intakes. 4. During post-dispersal stages, density-dependent mortality only conferred advantages to rare plants when located within hetero-specific plant patches. Still, thanks to rare-biased dispersal, rare plants showed the highest seed dispersal effectiveness irrespectively of landscape configuration. 5. Our theoretical approach presents a behavioral mechanism by which fruit choice can act as a frequency-dependent mechanism conferring rare-species advantages as important as classic post-dispersal density-dependent processes. 6. We hope that this study stimulates future work aimed at evaluating the importance of diet complementation in structuring the composition and spatial patterning of plant communities.
Excel file containing main model outputs- Changes in plant species relative abundance in the seed availability-seed rain transition (Rsp2), resource provisioning effectiveness (RPE) and seed dispersal effectiveness of focal species (SDE). All datas have a read_me sheet with variables information