Georeferenced populations of Hordeum murinum used in climate-trait analyses

The sampling localities were established for a large-scale study investigating in-situ variation in reproductive phenology, growth-related traits, and concentrations of elemental nutrients in seeds across broad climatic and environmental gradients. The dataset includes occurrence and locality information for 207 tetraploid populations sampled across approximately 4500 km of the species’ native distribution range.

Populations were located in a wide variety of human-disturbed ruderal habitats, including roadsides, urban green spaces, field margins, vineyards, riverbanks, and fallow land. For each population, field measurements included plant height, spike number, seed ripening phenology, and local habitat characteristics such as vegetation cover and soil properties. A subset of populations was additionally used for seed elemental nutrient analyses.