Dataset: Lodgepole pine Pinus contorta Douglas ex Loudon invasion in subarctic Iceland: evidence from a long-term study.

This dataset supports the paper Lodgepole Pine (Pinus contorta Douglas ex Loudon) Invasion in Subarctic Iceland: Evidence from a Long-Term Study, published in NeoBiota. It includes the following files: Point_data_distribution.csv: Contains distribution point data for Pinus contorta in Steinadalur, using the WGS 84 coordinate reference system (EPSG:4326). Plot_data_pinus.csv: provides data on plant species richness within study plots. Transects_data.csv: Includes information on the density of P. contorta along transects.