Data from: Linking genetic and ecological differentiation in an ungulate with a circumpolar distribution ...
Genetic differentiation among populations may arise from the disruption of gene flow due to local adaptation to distinct environments and/or neutral accumulation of mutations and genetic drift resulted from geographical isolation. Quantifying the role of these processes in determining the genetic st...
| Main Authors: | , , , , , |
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| Format: | Dataset |
| Language: | English |
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Dryad
2017
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.5061/dryad.f971b https://datadryad.org/stash/dataset/doi:10.5061/dryad.f971b |
| Summary: | Genetic differentiation among populations may arise from the disruption of gene flow due to local adaptation to distinct environments and/or neutral accumulation of mutations and genetic drift resulted from geographical isolation. Quantifying the role of these processes in determining the genetic structure of natural populations remains challenging. Here, we analyze the relative contribution of isolation-by-resistance (IBR), isolation-by-environment (IBE), genetic drift and historical isolation in allopatry during Pleistocene glacial cycles on shaping patterns of genetic differentiation in caribou/reindeer populations (Rangifer tarandus) across the entire distribution range of the species. Our study integrates analyses at range-wide and regional scales to partial out the effects of historical and contemporary isolation mechanisms. At the circumpolar scale, our results indicate that genetic differentiation is predominantly explained by IBR and historical isolation. At a regional scale, we found that ... : Ecography_ECOG-02995_DRYAD_2017Table Dryad 1. Sampling sites, number of individuals genotyped at 16 nuclear microsatellites (N), Census population size, and environmental variables for each population (n=57). Table Dryad 2. Pairwise genetic differentiation between caribou herds. Below diagonal: Fst and above diagonal: Dc chord distance. Table Dryad 3. Pairwise geographic distance (IBD) between caribou herds. Below diagonal: geodesic distance and above diagonal: distance on a flat landscape. Table Dryad 4. Above diagonal: Pairwise environmental dissimilarity (IBE) between caribou herds. Below diagonal: Pairwise landscape resistance (IBR) between caribou herds Table Dryad 5. Pairwise harmonic mean of census population sizes (Nc) ... |
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