Data included in the meta-analysis

Data file includes 389 cases from 199 studies that were included in the meta-analysis, see Appendix 1 for a list of citations for the data sources. Explanatory covariates relating to characteristics of the organisms, location, and the method of quantifying diversity are included, as well as Fisher's z transformation of Pearson's correlation between species richness and latitude (LDG strength). The slope and the standard error of the slope of the linear regression of species richness as a function of latitude are also provided.