Data and code from: Niche position mediates the effect of polyploidy on geographic range size in Clarkia
Data files
Jul 16, 2026 version files 16.65 MB
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clean_records_final2.csv
16.62 MB
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README.md
1.10 KB
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revised_code.R
31.71 KB
Abstract
Polyploidy has been proposed to result in greater geographic range size in plants because it increases the capacity for adaptation to novel environments; however, the proposed relationship is not found across clades. By contrast, the large genome constraint hypothesis predicts that larger genomes constrain the niche, leading to similar niches among related polyploids, while the habitat area hypothesis predicts range size is constrained by niche position (the geographic frequency of niche space). We mechanistically evaluated the links between these hypotheses to assess factors influencing polyploid range size and distribution.
Dataset DOI: 10.5061/dryad.3xsj3txvr
Description of the data and file structure
The study examines the role of niche position and breadth in the geographic range size of allopolyploids in the genus Clarkia.
The dataset contains occurrence records of all Clarkia species that have been cleaned of common geospatial issue. These records were then used to assess various aspects of Clarkia ranges and niches.
Files and variables
File: clean_records_final2.csv
Description: Occurrence records of Clarkia, cleaned of common quality issues and trimmed to the study area. The only relevant columns are species, latitude, and longitude.
File: revised_code.R
Description: R code to reproduce the figures and statistical results of the study
Code/software
R v 4.3.0
Access information
Other publicly accessible locations of the data:
- N/A
Data was derived from the following sources:
- N/A