Data and R scripts for: Modelling current and future distribution of four invasive Amaranthus species in the Mediterranean Basin under CMIP6 climate change scenarios

This dataset contains R scripts, cleaned occurrence records, and model validation results used in the study: "Modelling current and future distribution of four invasive Amaranthus species in the Mediterranean Basin under CMIP6 climate change scenarios." Contents:- R_scripts/: Complete analytical workflow (S1-S7)- occurrence_data/: Cleaned GBIF occurrence records for 4 Amaranthus species + habitat area results - validation_results/: Model performance metrics (AUC, Boyce Index, OR10) and ENMeval optimization results Data sources: GBIF (www.gbif.org), WorldClim 2.1 (www.worldclim.org)Software: R 4.3.1