Data from: Evolutionary potential in the Alpine: trait heritabilities and performance variation of the dwarf willow Salix herbacea from different elevations and microhabitats
Sedlacek, Janosch, University of Konstanz
Cortés, Andrés J., Uppsala University
Wheeler, Julia, University of Basel
Bossdorf, Oliver, University of Tübingen
Hoch, Guenter, University of Basel
Klápště, Jaroslav, University of British Columbia, Czech University of Life Sciences Prague
Lexer, Christian, University of Vienna
Rixen, Christian, University of Konstanz
Wipf, Sonja, Swiss Federal Institute for Forest, Snow and Landscape Research
Karrenberg, Sophie, Uppsala University
van Kleunen, Mark, University of Konstanz
Published Apr 12, 2017 on Dryad.
Cite this dataset
Sedlacek, Janosch et al. (2017). Data from: Evolutionary potential in the Alpine: trait heritabilities and performance variation of the dwarf willow Salix herbacea from different elevations and microhabitats [Dataset]. Dryad. https://doi.org/10.5061/dryad.cc03n
Alpine ecosystems are seriously threatened by climate change. One of the key mechanisms by which plants can adapt to changing environmental conditions is through evolutionary change. However, we still know little about the evolutionary potential in wild populations of long-lived alpine plants. Here, we investigated heritabilities of phenological traits, leaf size, and performance traits in natural populations of the long-lived alpine dwarf shrub Salix herbacea using relatedness estimates inferred from SSR (Simple Sequence Repeat) markers. Salix herbacea occurs in early- and late-snowmelt microhabitats (ridges and snowbeds), and we assessed how performance consequences of phenological traits and leaf size differ between these microhabitats in order to infer potential for evolutionary responses. Salix herbacea showed low, but significant, heritabilities of leaf size, clonal and sexual reproduction, and moderate heritabilities of phenological traits. In both microhabitats, we found that larger leaves, longer intervals between snowmelt and leaf expansion, and longer GDD (growing-degree days) until leaf expansion resulted in a stronger increase in the number of stems (clonal reproduction). In snowbeds, clonal reproduction increased with a shorter GDD until flowering, while the opposite was found on ridges. Furthermore, the proportion of flowering stems increased with GDD until flowering in both microhabitats. Our results suggest that the presence of significant heritable variation in morphology and phenology might help S. herbacea to adapt to changing environmental conditions. However, it remains to be seen if the rate of such an evolutionary response can keep pace with the rapid rate of climate change.
This data file provides the data on the SSR markers. An explanation of the variables is provided in the ReadMe file.
This data file provides all raw phenotypic data collected on the Salix herbacea plants in the field. Note that some of these variables were not used for the publication. An explanation of the variables is given in the ReadMe file.