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Título: | Variation in sampling effort affects the observed richness of plant–plant interactions via heterospecific pollen transfer: implications for interpretation of pollen transfer networks |
Autor: | Arceo-Gómez, Gerardo; Alonso, Conchita CSIC ORCID; Ashman, Tia-Lynn; Parra-Tabla, Víctor CSIC ORCID | Palabras clave: | dolomite outcrops heterospecific pollen interaction networks pollen transfer Pollination pollinator sharing Rarefaction curves serpentine seeps Yucatán peninsula |
Fecha de publicación: | 2018 | Editor: | John Wiley & Sons | Citación: | American Journal of Botany 105(9): 1601-1608 (2018) | Resumen: | [Premise of the Study] There is growing interest in understanding plant–plant interactions via pollen transfer at the community level. Studies on the structure and spatial variability of pollen transfer networks have been valuable to this understanding. However, there is high variability in the intensity of sampling used to characterize pollen transfer interactions, which could influence network structure. To date, there is no knowledge of how sampling effort influences the richness of pollen on stigmas and thereby transfer interactions observed, nor how this may vary across species and study sites. [Methods] We use rarefaction curves on 16 species to characterize the relationship between sampling effort (number of stigmas analyzed) and the richness of pollen transfer interactions recorded. We further assess variability in this relationship among species, plant community types, and sites within a single plant community. [Key Results] We show high among-species variation in the amount of sampling required to sufficiently characterize interspecific pollen transfer. We further reveal variability in the sampling effort-interaction richness relationship among different plant communities and even for the same species growing in different sites. [Conclusions] The wide heterogeneity in the sampling effort required to accurately characterize pollen transfer interactions observed has the potential to influence the characterization of pollen transfer dynamics. Thus, sampling completeness should be considered in future studies to avoid overestimation of modularity and specialization in pollen transfer networks that may bias the predicted causes and expected consequences of such processes for plant–plant interactions. |
Versión del editor: | http://doi.org/10.1002/ajb2.1144 | URI: | http://hdl.handle.net/10261/199215 | DOI: | 10.1002/ajb2.1144 | Identificadores: | doi: 10.1002/ajb2.1144 issn: 0002-9122 |
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