This is a .txt file of demographic data of the species: Gentiana pneumonanthe, collected and published by Gerard Oostermeijer (Instituut voor Biodiversiteit en Ecosysteem Dynamica (IBED), Universiteit van Amsterdam).This file allow users to run the workflow Calculate and Plot abundance over the years (http://www.myexperiment.org/packs/664.html)This table containing the demographic data on a series of individuals during 7 years, from 1987 to 1993 (6 periods: 1987-1988, 1988-1989 etc....