DOI: 10.5061/dryad.q573n5tvb
title: Data from: Relationship between the location of Pleistocene refugia and geographic and environmental centrality in a plant-pollinator mutualism from Patagonia

description: 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.
description: # Data from: Relationship between the location of Pleistocene refugia and
 geographic and environmental centrality in a plant-pollinator mutualism
 from Patagonia 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: 1. 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. 2. Puntos_calibrar: 43 occurrence points used to
 calibrate the current ecological niche model of Ca. polyrhiza. B:
 latitude. C: longitude. 3. Puntos_validar: 42 occurrence points used to
 validate the current ecological niche model of Ca. polyrhiza. B: latitude.
 C: longitude. 4. Div_Ce_cineraria: Haplotype diversity of the sampled
 populations of Centris cineraria. A: haplotype diversity. B: latitude. C:
 longitude. 5. Div_Ca_polyrhiza: Haplotype diversity of the sampled
 populations of Ca. polyrhiza. A: haplotype diversity. B: latitude. C:
 longitude. 6. Random_points: 200 random points generated along the
 Pleistocene refugia transect. A: Point number. B: latitude. C: longitude.
 7. 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). 8. 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). 9. 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