Global Tundra Vegetation Change - 30 years of plant abundance data from unmanipulated and experimentally-warmed plots

We amassed plot-based data on vegetation abundance (cover, point-frame hits, biomass, subplot frequency, stem-counts) from permanently marked plots, transects, and study areas throughout the tundra biome, and in and out of warming experiments. Criteria for inclusion in the warming treatment analysis were measures of plant abundance in warmed and control plots in at least one year. For the long-term change project, criteria for inclusion were repeat-measurements of plant abundance in unmanipulated vegetation using the same techniques in 2+ study years at least 5 years apart in time. We also collected air and soil temperature data (where available) from the study site locations.