Data for: Engel et al. (2020) - "How does variation in total and relative abundance contribute to gradients of species diversity?" Ecology and Evolution. Description The Gentry forest plot data set (Gentry, 1988, Phillips & Miller, 2002) was downloaded from the Botanical Information and Ecology Network (BIEN, https://bien.nceas.ucsb.edu/bien/). The RLS dataset of global reef fish abundance and biomass (Edgar et al., 2020; Edgar & Stuart-Smith, 2014) was dowloaded from Australian Ocean Data Network (AODN, https://portal.aodn.org.au/). Please use the most recent datasets from these sources. Files: Gentry_data.csv - Gentry tree dataset obtained from BIEN RLS_data.csv - RLS reef fish dataset downloaded from Australian Ocean Data Network analysis_script.R - script for data wrangling and analysis