Climatic data

Climatic data. Environmental data from P. drummondii populations as downloaded from the WorldClim v1.4 database in Sep 2016. We also show the loadings of the three first components in a PCA of this climatic data. Codes for climatic variables are: tmean = average monthly mean temperature (°C * 10); tmin = average monthly minimum temperature (°C * 10); tmax = average monthly maximum temperature (°C * 10); prec = average monthly precipitation (mm); alt = altitude (elevation above sea level) (m) (from SRTM); m = month of the year, from 1 (January) to 12 (December); x = code for the bioclimatic variable; bio1 = Annual Mean Temperature; bio2 = Mean Diurnal Range (Mean of monthly (max temp - min temp)); bio3 = Isothermality (bio2/bio7) (* 100); bio4 = Temperature Seasonality (standard deviation *100); bio5 = Max Temperature of Warmest Month; bio6 = Min Temperature of Coldest Month; bio7 = Temperature Annual Range (bio5-bio6); bio8 = Mean Temperature of Wettest Quarter; bio9 = Mean Temperature of Driest Quarter; bio10 = Mean Temperature of Warmest Quarter; bio11 = Mean Temperature of Coldest Quarter; bio12 = Annual Precipitation; bio13 = Precipitation of Wettest Month; bio14 = Precipitation of Driest Month; bio15 = Precipitation Seasonality (Coefficient of Variation); bio16 = Precipitation of Wettest Quarter; bio17 = Precipitation of Driest Quarter; bio18 = Precipitation of Warmest Quarter; bio19 = Precipitation of Coldest Quarter.