Area of potential range occupancy of 27 non-native vascular plant species across the Svalbard archipelago under current and future (SSP2-45 and SSP5-85) climate scenarios (see Suppl. material 1: figs S7, S9 for the corresponding maps). These are estimated using 30’ second rasters. The total ice-free area of non-glaciated land available using this dataset is 24 210 km2 and is denoted by a dashed horizontal line. Species are ranked first by their ecological impact category (and separated by a vertical line), next by the current area of potential range occupancy and lastly by the area of potential occupancy under the future intermediate climate scenario. All Low impact (LO) species score 1 for ecological effect (range 1-4) except Anthriscus sylvaticus (3, not currently present in Svalbard), Festuca rubra subsp. rubra and Stellaria media (both 2; Suppl. material 1: table S1, Artsdatabanken 2023).The areas and percentages of the non-glaciated parts of Svalbard are included in Suppl. material 1: table S2. Species labels follow the Norwegian Artsnavnebase (Species Nomenclature Database; Artsdatabanken). See Table 1 for scientific names corresponding to the data downloaded from GBIF.