Environmental data to: Depaermentier, MLC; Kempf, M; Motuzaitė Matuzevičiūtė, G: Environmentally adjusted δ13C thresholds for accurate detection of C4 plant consumption in Europe (2025)

These data and code can be used to reproduce the k-means clustered ecozones presented in the manuscript: Environmentally adjusted δ13C thresholds for accurate detection of C4 plant consumption in Europe Nature Communications Earth and Environment (2025) Margaux L. C. Depaermentier1, Michael Kempf2,3, Giedrė Motuzaitė Matuzevičiūtė1 1 Faculty of History, Vilnius University, Vilnius, Lithuania. 2 Department of Environmental Sciences, University of Basel, Basel, Switzerland. 3 Department of Geography, University of Cambridge, Cambridge, UK. data: DEM in EPSG 4326, ca. 5.7 GB, created from: https://earthexplorer.usgs.gov/ CHELSA data in Karger et al. 2017 Karger, D. N.; Conrad, O.; Böhner, J.; Kawohl, T.; Kreft, H.; Soria-Auza, R. W.; Zimmermann, N. E.; Linder, H. P.; Kessler, M. Climatologies at high resolution for the earth's land surface areas. Sci. Data 2017, 4, 170122 (20 pp.). https://doi.org/10.1038/sdata.2017.122 Karger, D. N., Brun, P., Zilker, F. (2025). CHELSA-monthly climate data at high resolution. EnviDat. https://www.doi.org/10.16904/envidat.686