Competition mediates understorey species range shifts under climate change

18 year time series of plant demographic data from a transplant- en competition exclusion experiment.data on 4 European understorey plant species: Scilla bifolia, Ornithogalum pyrenaicum, Iris foetidissima and Symphytum tuberosum.Shapefiles of the 4 species' distributionscleaned occurrence data and background data used in the species distribution modelsR code available for reproducing the integral projection models (including AI C model selection of the vital rates), and species distribution models (including scripts for cleaning the GBIF occurrence data).