R-script (code) to Fig. 1A-B and Table A1

This file contains the R-script and code that can be used to generate Fig. 1A-B and Table A1 in the manuscript. These figures show geographic variation in species frequencies (Fig. 1A) and density-differences between population categories (Fig. 1B), as well as the statistical tests (ANOVA and GLM) for comparison of these categories. Data-file associated with this script is provided separately