DOI: 10.5061/dryad.rn8pk0pgb
title: Data from: Potential effects of future climate change on global reptile distributions and diversity

description: Aim: Until recently, complete information on global reptile distributions
 has not been widely available. Here, we provide the first comprehensive
 climate impact assessment for reptiles on a global scale. Location:
 Global, excluding Antarctica Time period: 1995, 2050, 2080 Major taxa
 studied: Reptiles Methods: We modelled the distribution of 6,296 reptile
 species and assessed potential global as well as realm-specific changes in
 species richness, the change in global species richness across climate
 space, and species-specific changes in range extent, overlap and position
 under future climate change. To assess the future climatic impact on 3,768
 range-restricted species, which could not be modelled, we compared the
 future change in climatic conditions between both modelled and
 non-modelled species. Results: Reptile richness was projected to decline
 significantly over time, globally but also for most zoogeographic realms,
 with the greatest decrease in Brazil, Australia and South Africa. Species
 richness was highest in warm and moist regions, with these regions being
 projected to shift further towards climate extremes in the future. Range
 extents were projected to decline considerably in the future, with a low
 overlap between current and future ranges. Shifts in range centroids
 differed among realms and taxa, with a dominating global poleward shift.
 Non-modelled species were significantly stronger affected by projected
 climatic changes than modelled species. Main conclusions: With ongoing
 future climate change, reptile richness is likely to decrease
 significantly across most parts of the world. This effect as well as
 considerable impacts on species’ range extent, overlap, and position were
 visible across lizards, snakes and turtles alike. Together with other
 anthropogenic impacts, such as habitat loss and harvesting of species,
 this is a cause for concern. Given the historical lack of global reptile
 distributions, this calls for a re-assessment of global reptile
 conservation efforts, with a specific focus on anticipated future climate
 change.
description: These data comprise the raw data and results of the article:
 Biber et al. (2023) Potential effects of future climate change on global
 reptile distributions and diversity. <em>Global Ecology and
 Biogeography</em>. https://doi.org/10.1111/geb.13646   The methods used to generate these data are fully described in the main text of the paper, and all R code is provided below. Please see the usage notes for details. Code to reproduce the species distribution models, which we used in our analyses, is available at: https://github.com/christianhof/BioScen1.5_SDM
description: All data and code are contained within three different subfolders
 of a compressed (zipped) folder, as shown below. 
 R: R-code of the performed analysis, as well as for creating the
 individual figures and supporting figures data:
 summarised species, climate and model output data files for creating the
 presented results, figures and supporting figures
 extdata: raw data predicted by the performed species
 distribution models (SDMs; code for performing the species distribution
 models and creating the raw data can be found here: https://github.com/christianhof/BioScen1.5_SDM