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dc.contributor.authorHutter, Carl R.
dc.contributor.authorLambert, Shea M.
dc.contributor.authorWiens, John J.
dc.date.accessioned2017-12-20T17:16:39Z
dc.date.available2017-12-20T17:16:39Z
dc.date.issued2017-12
dc.identifier.citationRapid Diversification and Time Explain Amphibian Richness at Different Scales in the Tropical Andes, Earth’s Most Biodiverse Hotspot 2017, 190 (6):828 The American Naturalisten
dc.identifier.issn0003-0147
dc.identifier.issn1537-5323
dc.identifier.doi10.1086/694319
dc.identifier.urihttp://hdl.handle.net/10150/626254
dc.description.abstractThe Tropical Andes make up Earth's most species-rich biodiversity hotspot for both animals and plants. Nevertheless, the ecological and evolutionary processes underlying this extraordinary richness remain uncertain. Here, we examine the processes that generate high richness in the Tropical Andes relative to other regions in South America and across different elevations within the Andes, using frogs as a model system. We combine distributional data, a newly generated time-calibrated phylogeny for 2,318 frog species, and phylogenetic comparative methods to test the relative importance of diversification rates and colonization times for explaining Andean diversity at different scales. At larger scales (among regions and families), we find that faster diversification rates in Andean clades most likely explain high Andean richness. In contrast, at smaller temporal and spatial scales (within family-level clades within the Andes), diversification rates rarely explain richness patterns. Instead, we show that colonization times are important for shaping elevational richness patterns within the Andes, with more species found in habitats colonized earlier. We suggest that these scale-dependent patterns might apply to many other richness gradients. Recognition of this scale dependence may help to reconcile conflicting results among studies of richness patterns across habitats, regions, and organisms.
dc.language.isoenen
dc.publisherUNIV CHICAGO PRESSen
dc.relation.urlhttp://www.journals.uchicago.edu/doi/10.1086/694319en
dc.rights© 2017 by The University of Chicago. All rights reserved.en
dc.subjectamphibiansen
dc.subjectbiogeographyen
dc.subjectdiversificationen
dc.subjectspeciationen
dc.subjectspecies richnessen
dc.subjecttime-for-speciation effecten
dc.titleRapid Diversification and Time Explain Amphibian Richness at Different Scales in the Tropical Andes, Earth’s Most Biodiverse Hotspoten
dc.typeArticleen
dc.contributor.departmentUniv Arizona, Dept Ecol & Evolutionary Biolen
dc.identifier.journalThe American Naturalisten
dc.description.note12 month embargo; Published online: 23 Oct 2017en
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en
dc.eprint.versionFinal published versionen
html.description.abstractThe Tropical Andes make up Earth's most species-rich biodiversity hotspot for both animals and plants. Nevertheless, the ecological and evolutionary processes underlying this extraordinary richness remain uncertain. Here, we examine the processes that generate high richness in the Tropical Andes relative to other regions in South America and across different elevations within the Andes, using frogs as a model system. We combine distributional data, a newly generated time-calibrated phylogeny for 2,318 frog species, and phylogenetic comparative methods to test the relative importance of diversification rates and colonization times for explaining Andean diversity at different scales. At larger scales (among regions and families), we find that faster diversification rates in Andean clades most likely explain high Andean richness. In contrast, at smaller temporal and spatial scales (within family-level clades within the Andes), diversification rates rarely explain richness patterns. Instead, we show that colonization times are important for shaping elevational richness patterns within the Andes, with more species found in habitats colonized earlier. We suggest that these scale-dependent patterns might apply to many other richness gradients. Recognition of this scale dependence may help to reconcile conflicting results among studies of richness patterns across habitats, regions, and organisms.


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