DOI: 10.5061/dryad.h44j0zpn8
title: Supplementary data from 'Predicting the distribution of Australian frogs and their overlap with Batrachochytrium dendrobatidis under climate change'

description: Aim: Amphibians, with over 40% of assessed species listed as threatened,
 are disproportionately at risk in the global extinction crisis. Among the
 many factors implicated in the current and ongoing loss of
 amphibian biodiversity are climate change and the disease
 chytridiomycosis, caused by the fungus Batrachochytrium dendrobatidis
 (Bd). These two threats are of particular concern in Australia, where Bd
 has been implicated in the declines of at least 43 frog species, and
 climate change is emerging as an additional threat. Here, we explore how
 climate change is likely to affect the distributions of Australian frog
 species and Bd to the year 2100, as well as how the spatial and climatic
 niche overlap between chytridiomycosis-declined frogs and Bd could shift.
 Location: Australia Methods: We used species distribution modelling to
 infer the current and future distribution of 141 Australian frog species
 and Bd, under two emissions scenarios. We used metrics of niche
 similarity, including Schoener’s D and the Niche Margin Index, to quantify
 predicted alterations to spatial interactions between Bd and frog species.
 Results: Climate change is likely to have a variable impact on frog
 distributions in Australia, with some 23 and 47 species, primarily in
 southern Australia, predicted to lose at least 30% of their current
 distributions under low and high emissions scenarios, respectively. In
 contrast, 69 and 68 species, respectively, have potential to increase
 their distributions, primarily in northern Australia. While the
 distribution of Bd is predicted to decrease, the proportional spatial and
 niche overlap between Bd and susceptible frog species is predicted to
 remain little changed, and in some cases, to increase. Main
 conclusions: Although effects will be variable across the continent,
 climate change is likely to be a threatening factor to a number of
 Australian frog species. Additionally, chytridiomycosis is likely to
 remain a significant threat to many frog species, as any reductions to the
 pathogen’s distribution largely coincide with geographic range
 contractions of chytridiomycosis-susceptible species.
description: Supplementary data from 'Predicting the
 distribution of Australian frogs and their overlap with Batrachochytrium
 dendrobatidis under climate change'. Supplementary scripts from 'Predicting the
 distribution of Australian frogs and their overlap with Batrachochytrium
 dendrobatidis under climate change'. Attached scripts can be completed in sequential
 order, using the supplementary data provided in our paper Sopniewski, J.,
 Scheele, B. C., and Cardillo, M. (2022), to reproduce results.
 IBRA bioregions can be downloaded
 from: https://www.awe.gov.au/agriculture-land/land/nrs/science/ibra#ibra IUCN data can be downloaded from: https://www.iucnredlist.org/ WorldClim data (current) can be downloaded from: https://www.worldclim.org/ WorldClim data (future) can be downloaded from: https://www.worldclim.org/data/cmip6/cmip6climate.html