DOI: 10.5061/dryad.m728c47
title: Data from: Narrow thermal tolerance and low dispersal drive higher speciation in tropical mountains

description: Species richness is greatest in the tropics and much of this diversity is
 concentrated in mountains. Janzen (1967) proposed that reduced seasonal
 temperature variation selects for narrower thermal tolerances and limited
 dispersal along tropical elevation gradients. These locally adapted traits
 should, in turn, promote reproductive isolation and higher speciation
 rates in tropical mountains compared to temperate ones. Here we show that
 tropical and temperate montane stream insects have diverged in thermal
 tolerance and dispersal capacity, two key traits that are drivers of
 isolation in montane populations. Tropical species in each of three insect
 clades have markedly narrower thermal tolerances and lower dispersal than
 temperate species, resulting in significantly greater population
 divergence, higher cryptic species diversity, higher tropical speciation
 rates, and greater accumulation of species over time. Our study also
 indicates that tropical montane species, with narrower thermal tolerance
 and reduced dispersal ability, will be especially vulnerable to rapid
 climate change.
description: SiteDataGeographical data for collection sitesAna.genGenepop file containing SNP genotypes.Ape.genGenepop file containing SNP genotypes.Bae.genGenepop file containing SNP genotypes.Bbi.genGenepop file containing SNP genotypes.Btr.genGenepop file containing SNP genotypes.Hpa.genGenepop file containing SNP genotypes.Rhy.genGenepop file containing SNP genotypes.Smi.genGenepop file containing SNP genotypes.Ana-dadiZip archive containing .vcf files for samples from each collection site.Ape_dadiZip archive containing .vcf files for samples from each collection site.Bae_dadiZip archive containing .vcf files for samples from each collection site.Bbi_dadiZip archive containing .vcf files for samples from each collection site.Btr-dadiZip archive containing .vcf files for samples from each collection site.Hpa-dadiZip archive containing .vcf files for samples from each collection site.Rhy-dadiZip archive containing .vcf files for samples from each collection site.Smi-dadiZip archive containing .vcf files for samples from each collection site.READMEDescription of Supporting Data FilesSupDataDescription.txtAna_Oyacachi_fastq.tar.gzRAD sequence data in fastq format for Anacroneuria - part 1Ana_Papallacta_fastq.tar.gzRAD sequence data in fastq format for Anacroneuria samples - part 2Ape_Oyacachi_fastq.tar.gzRAD sequence data in fastq format for andesiops samples - part 1Ape_Papallacta_fastq.tar.gzRAD sequence data in fastq format for Andesiops samples - part 2Bbi_BigThompson_fastq.tar.gzRAD sequence data in fastq format for Baetis bicaudatus samples - part 1Bbi_BigThompson.tar.gzBbi_PoudreStVrain_fastq.tar.gzRAD sequence data in fastq format for Baetis bicaudatus samples - part 2Bbi_PoudreStVrain.tar.gzHpa_BigThompson_fastq.tar.gzRAD sequence data in fastq format for Hesperoperla pacifica - part 1Hpa_PoudreStVrain_fastq.tar.gzRAD sequence data in fastq format for Hesperoperla pacifica - part 2Bae_fastq.tar.gzRAD sequence data in fastq format for Baetodes sp - part 1Btr_fastq.tar.gzRAD sequence data in fastq format for Baetis tricaudatusRhy_fastq.tar.gzRAD sequence data in fastq format for Rhyacophyla brunneaSmi_fastq.tar.gzRAD sequence data in fastq format for Smicridea sp