Data from: Relationship between the location of Pleistocene refugia and geographic and environmental centrality in a plant-pollinator mutualism from Patagonia
Data files
May 19, 2025 version files 757.88 KB
Sep 15, 2025 version files 761.57 KB
Sep 24, 2025 version files 764.26 KB
Abstract
Glacial refugia are habitats where species can persist during climate change, and they are of high conservation value due to their role as hotspots of genetic diversity. Therefore, it is relevant to understand factors that determine the distribution of these refugia across species’ ranges and of their mutualists. According to the CPH, as genetic diversity is highest in the geographic range centre of the species' distribution, it is expected that refugia coincide with this centre, if the geographic and environmental centroids are coupled. We proposed an integrative framework that combines genetic diversity, current and past distribution range, and historical ecological niche to investigate the association between Pleistocene refugia and geographic and environmental centrality in a plant-pollinator mutualism from Patagonia. We identified a clear pattern in which genetic diversity was negatively associated with distance to environmental centroids and positively with distance to geographic centres of Centris cineraria, Calceolaria polyrhiza, and their mutualistic interaction. Our results show that glacial refugia can be geographically peripheral but ecologically central, and that highly specialized mutualism would share the same refugia. Focusing on spatio-temporal dynamics of environmental rather than geographic centroids can contribute to a better understanding of aspects related to the conservation and evolution of population species.
This dataset includes three files.
The first file is an R document that contains all the R code used in the study, including routines
for running the models, performing GLMs and cross-validation, and generating visualizations.
The second file is an Excel spreadsheet that contains the data tables used in the analyses.
These include:
- Vtp: Values of the 19 bioclimatic variables at the 43 points used to calibrate the model of Calceolaria polyrhiza,
to identify and exclude strongly correlated variables. - Puntos_calibrar: 43 occurrence points used to calibrate the current ecological niche model of Ca. polyrhiza.
B: latitude. C: longitude. - Puntos_validar: 42 occurrence points used to validate the current ecological niche model of Ca. polyrhiza.
B: latitude. C: longitude. - Div_Ce_cineraria: Haplotype diversity of the sampled populations of Centris cineraria. A: haplotype diversity.
B: latitude. C: longitude. - Div_Ca_polyrhiza: Haplotype diversity of the sampled populations of Ca. polyrhiza. A: haplotype diversity.
B: latitude. C: longitude. - Random_points: 200 random points generated along the Pleistocene refugia transect. A: Point number. B: latitude.
C: longitude. - Centris_G_E: Dataset used for fitting the GLM for Ce. Cineraria. A: haplotype diversity. B: distance to the
geographic range centre (km). C: distance to the environmental centroid (km). - Calceo_G_E: Dataset used for fitting the GLM for Ca. polyrhiza. A: haplotype diversity. B: distance to the
geographic range centre (km). C: distance to the environmental centroid (km). - CyC_G_E: Dataset used for fitting the GLM for the mutualistic interaction. A: haplotype diversity. B: distance to the
geographic range centre (km). C: distance to the environmental centroid (km).
The third file contains the seven raster variables used to evaluate several Maxent models of Calceolaria polyrhiza
Versioned Changes:
From the previous version, we added in the R script the routine to simulate residuals and changed the distance to the environmental centroid in the Excel spreadsheets Centris_G_E, Calceo_G_E, a nd CyC_G_E.
Also, we added the routine to generate the Contour plot of genetic diversity as a function of geographic and environmental distance for Ce. Cineraria and the mutualistic interaction