DOI: 10.5061/dryad.8p7435hq
title: Data from: Effects of vicariant barriers, habitat stability, population isolation and environmental features on species divergence in the south-western Australian coastal reptile community

description: Identifying explicit hypotheses regarding the factors determining genetic
 structuring within species can be difficult, especially in species
 distributed in historically dynamic regions. To contend with these
 challenges, we use a framework that combines species distribution models,
 environmental data and multi-locus genetic data to generate and explore
 phylogeographic hypotheses for reptile species occupying the coastal
 sand-dune and sand-plain habitats of the south-western Australian
 biodiversity hotspot; a community which has both a high diversity of
 endemics and has varied dramatically in spatial extent over time. We use
 hierarchical AMOVA, summary statistic and distance-based analyses to
 explicitly test specific phylogeographic hypotheses. Namely, we test if
 biogeographic vicariance across barriers, habitat stability, population
 isolation along a linear habitat or fragmentation across different
 environments can explain genetic divergence within five co-distributed
 squamate reptile species. Our results show that patterns of genetic
 variation reflect complex and species-specific interactions related to the
 spatial distribution of habitats present currently and during repeated
 glacial minima, as opposed to being associated with historical factors
 such as habitat stability between glacial and inter-glacial periods or
 vicariant barriers. We suggest that the large impact of habitat
 characteristics over time (i.e., relative levels of habitat connectivity,
 climatic gradients and spatial heterogeneity of soil types) reflects the
 ecological restrictions of the sand-dune and sandplain reptile communities
 and may explain the lack of concordance across taxa. The study
 demonstrates the general utility of the approach for assemblage-level, as
 well as single species, phylogeographic study, including its usefulness
 for exploring biologically-informed hypotheses about what factors have
 influenced patterns of genetic variation.
description: alboDistributional records
 used in construction of MaxEnt species distribution model for Lucasium
 alboguttatum sourced from OZCAM and vetted for errors.dornDistributional records
 used in construction of MaxEnt species distribution model for
 Diplodactylus ornatus sourced from OZCAM and vetted for
 errors.llinDistributional records
 used in construction of MaxEnt species distribution model forLerista
 lineopunctulata sourced from OZCAM and vetted for
 errors.lpraeDistributional records
 used in construction of MaxEnt species distribution model for Lerista
 praepedita sourced from OZCAM and vetted for errors.mlinDistributional records
 used in construction of MaxEnt species distribution model for Morethia
 lineoocellata sourced from OZCAM and vetted for errors.Current_2
 ASCIICurrent environmental
 ASCII files used to generate species distribution models for all species
 in MaxEnt. Description of files and their source is given in the
 paper.21k_CCSM_ASCIILGM environmental ASCII files used to project models species distribution models onto historic climates in MaxEnt. See paper for data source and information.