Plant community data from 27 experimental sites across the Savannah River Site collected in 2010 and 2012-2015. Column explanations: year - year of plant survey, done throughout each summer. 2010 was before the thinning treatment was implemented. site - spatial block around the Savannah River Site in South Carolina that includes 4 or more 1 hectare patches. plotpair - the number associated with pairs of 1 hectare plots on each site of the land use boundary. Most sites have 2 plot pairs but some have more. standtype - coded remnant or matrix. Whether a 1 hectare patch is a remnant longleaf pine savanna with no history of agriculture (remnant) or a patch that was in tillage agriculture as of 1951 then abandoned and planted as pine plantation, AKA a post agricultural area (matrix). distance - distance in meters of 10 x 10 m plot from the land-use boundary between remnant and post-ag. 0 is at the land-use boundary and goes to 90. treatment - coded as control, harvest, or discarded. Control are not manipulated and harvest had all but 10 trees per hectare removed in 2011. Discarded plots where only sampled in 2010 prior to the thinning treatment. Data from these sites was used in the indicator analysis but for nothing else. adjtrt - tells if the adjacent plot on the other side of the land-use boundary is control or harvest. Discarded plots where only sampled in 2010 prior to the thinning treatment. Data from these sites was used in the indicator analysis but for nothing else. The rest of the columns are species names with the number of 10x10 plots they were found in (max 10) in the 1 hectare patch. Species names are six letter code for plant species (first three letters of genus + first three letters of species. See "turley_et_al_2017_species_codes_to_species.csv" for converting species codes to scientific name.