Description
This dataset contains georeferenced records of natural populations of Hordeum murinum sampled across Europe and North Africa between 2022 and 2024. 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. Cytotype identity of sampled populations was verified using flow cytometry, and only exclusively tetraploid populations were included in the primary analyses associated with the published study.
The dataset was created to document the spatial distribution of sampled populations and to support reproducibility and future macroecological, evolutionary, and ecological analyses of intraspecific trait variation in wild plant species.
Data Records
The data in this occurrence resource has been published as a Darwin Core Archive (DwC-A), which is a standardized format for sharing biodiversity data as a set of one or more data tables. The core data table contains 2,353 records.
This IPT archives the data and thus serves as the data repository. The data and resource metadata are available for download in the downloads section. The versions table lists other versions of the resource that have been made publicly available and allows tracking changes made to the resource over time.
Versions
The table below shows only published versions of the resource that are publicly accessible.
Rights
Researchers should respect the following rights statement:
The publisher and rights holder of this work is University of Gdańsk. This work is licensed under a Creative Commons Attribution Non Commercial (CC-BY-NC 4.0) License.
GBIF Registration
This resource has been registered with GBIF, and assigned the following GBIF UUID: cb926654-15c9-4f74-9e44-94e40d14a15c. University of Gdańsk publishes this resource, and is itself registered in GBIF as a data publisher endorsed by Polish Biodiversity Information Network.
Keywords
Occurrence; Observation
Contacts
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Geographic Coverage
Europe and North Africa, spanning from southern Scandinavia to the Mediterranean region, including populations from Central, Western, Southern, and Northern Europe as well as Morocco and Algeria.
| Bounding Coordinates | South West [28.635, -17.878], North East [55.683, 35.453] |
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Taxonomic Coverage
No Description available
| Kingdom | Plantae |
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| Phylum | Tracheophyta |
| Class | Liliopsida |
| Order | Poales |
| Family | Poaceae |
Sampling Methods
Populations were sampled during the local seed-ripening period between March and August, depending on geographic region. A population was defined as a locality containing at least ten individuals of Hordeum murinum. Sampling sites were generally separated by a minimum distance of 1 km to increase the likelihood of representing distinct populations. Within each population, up to ten individual plants were sampled randomly, with a minimum spacing of 5 m between sampled individuals. Geographic coordinates were recorded in the field using handheld GPS devices or smartphone-based GPS applications. Local habitat characteristics, including vegetation cover and soil properties, were recorded at each site. Seeds and soil samples were collected for subsequent laboratory analyses.
| Study Extent | The dataset covers 207 natural populations of Hordeum murinum sampled across Europe and North Africa between 2022 and 2024. Sampling localities span approximately 4500 km of the species’ native distribution range, extending from southern Scandinavia to the Mediterranean region, including Central, Western, Southern, and Northern Europe as well as Morocco and Algeria. Populations were sampled in a wide range of human-disturbed ruderal habitats, including roadsides, field margins, vineyards, urban green spaces, riverbanks, and fallow land. |
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| Quality Control | Taxonomic identity of sampled plants was verified using standard regional floras and taxonomic references. Because Hordeum murinum belongs to a cytologically variable species complex, ploidy level of sampled populations was determined using flow cytometry. Only exclusively tetraploid populations identified as Hordeum murinum subsp. murinum were retained in the primary dataset. Geographic coordinates were checked for consistency and obvious spatial errors prior to publication. Trait measurements and laboratory analyses followed standardized protocols across all sampled populations to ensure comparability of data collected throughout the study area. |
Method step description:
- 1. Identification of natural populations across the species’ native range.
- 2. Field sampling during the seed-ripening period.
- 3. Recording of geographic coordinates and local habitat characteristics.
- 4. Measurement of plant growth-related traits in situ.
- 5. Collection of seed and soil samples.
- 6. Determination of ploidy level using flow cytometry.
- 7. Laboratory analyses of soil properties and seed elemental nutrient concentrations.
- 8. Validation and standardization of geographic and biological data prior to dataset publication.
Additional Metadata
| Alternative Identifiers | cb926654-15c9-4f74-9e44-94e40d14a15c |
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| https://ipt.gbif.pl/resource?r=hordeum_murinum_villhauer_2026 |