The adaptive challenge of extreme conditions shapes evolutionary diversity of plant assemblages at continental scales

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dc.creatorDanilo Rafael Mesquita Neves
dc.creatorBrian Enquist
dc.creatorAndrew Kerkhoff
dc.creatorSusy Echeverría-Londoño
dc.creatorCory Merow
dc.creatorNaia Morueta-Holme
dc.creatorRobert Peet
dc.creatorBrody Sandel
dc.creatorJens-Christian Svenning
dc.creatorSusan Wiser
dc.date.accessioned2023-06-19T20:17:54Z
dc.date.accessioned2025-09-08T23:10:30Z
dc.date.available2023-06-19T20:17:54Z
dc.date.issued2021
dc.identifier.doihttps://doi.org/10.1073/pnas.2021132118
dc.identifier.issn1091-6490
dc.identifier.urihttps://hdl.handle.net/1843/55128
dc.languagepor
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofProceedings of the National Academy of Sciences
dc.rightsAcesso Aberto
dc.subjectAngiosperma
dc.subjectSecas
dc.subject.otherAngiosperms
dc.subject.otherDrought
dc.subject.otherEvolutionary diversity
dc.subject.otherLatitudinal diversity gradient
dc.subject.otherPhylogenetic clustering
dc.titleThe adaptive challenge of extreme conditions shapes evolutionary diversity of plant assemblages at continental scales
dc.typeArtigo de periódico
local.citation.epage9
local.citation.issue37
local.citation.spage1
local.citation.volume118
local.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.
local.identifier.orcidhttps://orcid.org/0000-0002-0855-4169
local.identifier.orcidhttps://orcid.org/0000-0002-6124-7096
local.identifier.orcidhttps://orcid.org/0000-0001-9617-8687
local.identifier.orcidhttps://orcid.org/0000-0002-0038-146X
local.identifier.orcidhttps://orcid.org/0000-0002-0776-4092
local.identifier.orcidhttps://orcid.org/0000-0003-2823-6587
local.identifier.orcidhttps://orcid.org/0000-0002-3415-0862
local.identifier.orcidhttps://orcid.org/0000-0002-8938-8181
local.publisher.countryBrasil
local.publisher.departmentICB - DEPARTAMENTO DE BOTÂNICA
local.publisher.initialsUFMG
local.url.externahttps://www.pnas.org/doi/full/10.1073/pnas.2021132118

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