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Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/55128
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dc.creatorDanilo Rafael Mesquita Nevespt_BR
dc.creatorBrian Enquistpt_BR
dc.creatorAndrew Kerkhoffpt_BR
dc.creatorSusy Echeverría-Londoñopt_BR
dc.creatorCory Merowpt_BR
dc.creatorNaia Morueta-Holmept_BR
dc.creatorRobert Peetpt_BR
dc.creatorBrody Sandelpt_BR
dc.creatorJens-Christian Svenningpt_BR
dc.creatorSusan Wiserpt_BR
dc.date.accessioned2023-06-19T20:17:54Z-
dc.date.available2023-06-19T20:17:54Z-
dc.date.issued2021-
dc.citation.volume118pt_BR
dc.citation.issue37pt_BR
dc.citation.spage1pt_BR
dc.citation.epage9pt_BR
dc.identifier.doihttps://doi.org/10.1073/pnas.2021132118pt_BR
dc.identifier.issn1091-6490pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/55128-
dc.description.resumoThe tropical conservatism hypothesis (TCH) posits that the latitudinal gradient in biological diversity arises because most extant clades of animals and plants originated when tropical environments were more widespread and because the colonization of colder and more seasonal temperate environments is limited by the phylogenetically conserved environmental tolerances of these tropical clades. Recent studies have claimed support of the TCH, indicating that temperate plant diversity stems from a few more recently derived lineages that are nested within tropical clades, with the colonization of the temperate zone being associated with key adaptations to survive colder temperatures and regular freezing. Drought, however, is an additional physiological stress that could shape diversity gradients. Here, we evaluate patterns of evolutionary diversity in plant assemblages spanning the full extent of climatic gradients in North and South America. We find that in both hemispheres, extratropical dry biomes house the lowest evolutionary diversity, while tropical moist forests and many temperate mixed forests harbor the highest. Together, our results support a more nuanced view of the TCH, with environments that are radically different from the ancestral niche of angiosperms having limited, phylogenetically clustered diversity relative to environments that show lower levels of deviation from this niche. Thus, we argue that ongoing expansion of arid environments is likely to entail higher loss of evolutionary diversity not just in the wet tropics but in many extratropical moist regions as well.pt_BR
dc.languageporpt_BR
dc.publisherUniversidade Federal de Minas Geraispt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentICB - DEPARTAMENTO DE BOTÂNICApt_BR
dc.publisher.initialsUFMGpt_BR
dc.relation.ispartofProceedings of the National Academy of Sciencespt_BR
dc.rightsAcesso Abertopt_BR
dc.subjectAngiospermspt_BR
dc.subjectDroughtpt_BR
dc.subjectEvolutionary diversitypt_BR
dc.subjectLatitudinal diversity gradientpt_BR
dc.subjectPhylogenetic clusteringpt_BR
dc.subject.otherAngiospermapt_BR
dc.subject.otherSecaspt_BR
dc.titleThe adaptive challenge of extreme conditions shapes evolutionary diversity of plant assemblages at continental scalespt_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://www.pnas.org/doi/full/10.1073/pnas.2021132118pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-0855-4169pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-6124-7096pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-9617-8687pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-0038-146Xpt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-0776-4092pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-2823-6587pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-3415-0862pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-8938-8181pt_BR
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