Spatial discontinuity of mountain systems and genetic structure of alpine plants: the Alps-Carpathians disjunction in a comparative phylogeographical context

Aim
In mountain areas, geographical isolation and history of mountain systems are believed to be among the most important factors which determine population distribution and connectivity. In this study we address the importance of discontinuity among mountain systems for intraspecific genetic structure by investigating whether the geographical disjunction between the Alps and the Carpathians (and the related habitat gap) is the primary factor that shapes the genetic structure of the high-mountain plant populations. We compare the large-scale genetic structure of alpine plants from these two parts of the European Alpine System concerning the location of the main genetic split in the studied species, large-scale patterns of phylogeographical lineages and potential factors influencing their distribution.
Location
The Alps and the Carpathians
Taxon
22 alpine/subalpine vascular plant species
Methods
We performed Bayesian population structure analysis on genome-wide genotyping (AFLP) data and..., Structure datasets based on AFLP markers from https://doi.org/10.5061/dryad.s4q6s with only the species occurring in the Alps and the Carpathians. Datasets for both mountain ranges were merged. In the case of two species (Gypsophila repens and Oreojuncus trifidus), we removed a few outlier individuals (4 and 14 individuals, respectively) based on PCoA, as they likely resulted from genotyping errors.
Original dataset: Taberlet, Pierre; Zimmermann, Niklaus E.; Englisch, Thorsten et al. (2023). Data from: Genetic diversity in widespread species is not congruent with species richness in alpine plant communities [Dataset]. Dryad. https://doi.org/10.5061/dryad.s4q6s
 , , # Spatial discontinuity of mountain systems and genetic structure of alpine plants: the Alps-Carpathians disjunction in a comparative phylogeographical context

[https://doi.org/10.5061/dryad.vdncjsz5w](https://doi.org/10.5061/dryad.vdncjsz5w)

## Description of the data and file structure

Structure datasets based on AFLP markers from [https://doi.org/10.5061/dryad.s4q6s.](https://doi.org/10.5061/dryad.s4q6s) Only species occurring in the Alps and the Carpathians were retained. The original dataset contained separate structure files for both mountain ranges, thus the files were merged. In the case of two species (Gypsophila repens and Oreojuncus trifidus), we removed a few outlier individuals (4 and 14 individuals, respectively) based on PCoA, as they likely resulted from genotyping errors.

## Files

The resulting dataset consists of the following files:

* Arabis_alpina.str
* Campanula_alpina.str
* Carex_firma.str
* Carex_sempervirens.str
* Cerastium_uniflorum.str
* Dryas_octopetala....,