ReadMe for Rare frost events reinforce tropical savanna-forest boundaries. William A. Hoffmann, Samuel W. Flake, Rodolfo C.R. Abreu, Natashi A.L. Pilon, Davi R. Rossatto, Giselda Durigan. This ReadMe file describes the following data and R files for the above publication: File 1) FrostAnalyses.r. This file contains code for analyses performed in r. File 2) FrostPhylogeny.txt. This file contains the ultrametric tree used for the phylogenetic analyses File 3) FrostTraits.csv. This file contains the species data for the phylogenetic analyses, with the following fields A) species: binary latin name. B) T50: The estimated temperature at which 50% of individuals were damaged (C). C) Type: s = savanna specialist, f = forest specialist or generalist. D) Lat: Latitude of southern range limit (degrees) E) Bio6: The climatological mean temperature of the coldest month from the WorldClim 2.0 database (http://www.worldclim.org/) at the cold limit of the species range. File 4) FrostDamage.csv. This file contains the cold damage data of each individual in the study plots, with the following fields: A) P: Plot identifier number. B) PlotBasalArea: Tree basal area of the plot (m^2/ha). C) MinTemp: Predicted minimum air temperature on the coldest night at height of 1 m (C). D) Phys: Physiognomy of the plot 0 = shrub savanna, 1 = tree savanna, 2 = forest. E) TagNumber: Identifier number for trees that were permanently tagged. F) Species: Binomial latin name. G) Species.Code: Four-letter abbreviation of species. H) Type: S = savanna specialist, F = forest specialist or generalist. I) InitialHeight: Height prior to frost (cm) J) FinalHeight: Height one year after frost (cm) K) LeafDamage: Fraction of leaf area damaged, as visually estimated several days after the coldest frost event (cm). L) DiebackHeight: The height from which the stem resprouted, as determined one year after the severe frost (cm). M) Dieback.length: The loss amount of stem height lost due to dieback (cm). N) CrownExposure: A unitless index of canopy exposure: 1 = receiving no direct light; 2 = receiving some direct lateral light; 3 = receiving some direct overhead light, but with <90% of the crown exposed to overhead light; 4 = receiving direct overhead light on >90% of the vertical projection of the crown; 5 = receiving direct light on all sides (an emergent tree or open-grown savanna tree). O) dieback.binary: A binary indicator of damage. 0 = no damage; 1 = damaged. A plant was considered damaged if it exhibited at least 50% leaf damage. For individuals without leaf damage data, an individual was considered damaged if it exhibited any amount of stem dieback. P) RegrowthLength: The recovery of height, from the point of dieback, for plants experiencing any amount of stem dieback (cm) Q) NetChange: The net increase or decrease in height as determined one year after the severe frost (cm). This net change is equal to InitialHeight-FinalHeight and is also equal to RegrowthLength-Dieback.length.