Data
The empirical data consist of 3095 published species inventories from around the world representing terrestrial organisms: trees, arthropods, and tetrapods. They were downloaded from the Ecological Register website (http://ecoregister.org) on 13 November 2022. The 82,870 identifications stem from 2019 publications. A total of 27,045 formal Linnean species are represented by 73,133 of these records, and the rest are specifically indeterminate. Every record is associated with a count of individuals encountered. Major animal groups include ants, butterflies, bats, birds, dung beetles, frogs, large mammals, lizards, mosquitoes, odonates, orthopterans, and small mammals. Earlier versions of the database have featured in several publications (e.g., Alroy 2015, 2017, 2018).