Show simple item record Marx, Hannah E. Dentant, Cédric Renaud, Julien Delunel, Romain Tank, David C. Lavergne, Sébastien
dc.coverage.spatial Alps
dc.coverage.spatial France
dc.coverage.spatial Parc national des Écrins 2017-08-08T15:47:26Z 2017-08-08T15:47:26Z 2017-08-04
dc.identifier doi:10.5061/dryad.mc50c
dc.identifier.citation Marx HE, Dentant C, Renaud J, Delunel R, Tank DC, Lavergne S (2017) Riders in the sky (islands): using a mega-phylogenetic approach to understand plant species distribution and coexistence at the altitudinal limits of angiosperm plant life. Journal of Biogeography 44(11): 2618-2630.
dc.description Aim: Plants occurring on high-alpine summits are generally expected to persist due to adaptations to extreme selective forces caused by the harshest climates where angiosperm life is known to thrive. We assessed the relative effects of this strong environmental filter and of other historical and stochastic factors driving plant community structure in very high-alpine conditions. Location: European Alps, Écrins National Park, France. Methods: Using species occurrence data collected from floristic surveys on 15 summits (2,791–4,102 m a.s.l.) throughout the Écrins range, along with existing molecular sequence data obtained from GenBank, we used a mega-phylogenetic approach to evaluate the phylogenetic structure of high-alpine plant species assemblages. We used three nested species pools and two null models to address the importance of species-specific and species-neutral processes for driving coexistence. Results: Compared with the entire species pool of the study region, alpine summits exhibited a strong signal of phylogenetic clustering. Restricting statistical sampling to environmentally and historically defined species pools reduced the significance of this pattern. However, we could not reject a model that explicitly incorporates neutral colonization and local extinction in shaping community structure for dominant plant orders. Between summits, phylogenetic turnover was generally lower than expected. Environmental drivers did not explain overall phylogenetic patterns, but we found significant geographical and climatic structure in phylogenetic diversity at finer taxonomic scales. Main conclusions: Although we found evidence for strong phylogenetic clustering within alpine summits, we were not able to reject models of species-neutral processes to explain patterns of floristic diversity. Our results suggest that plant community structure in high-alpine regions can also be shaped by neutral processes, and not through the sole action of environmental selection as traditionally assumed for harsh and stressful environments.
dc.relation.haspart doi:10.5061/dryad.mc50c/1
dc.relation.haspart doi:10.5061/dryad.mc50c/2
dc.relation.haspart doi:10.5061/dryad.mc50c/3
dc.relation.haspart doi:10.5061/dryad.mc50c/4
dc.relation.isreferencedby doi:10.1111/jbi.13073
dc.subject alpine flora
dc.subject phylogenetic diversity
dc.subject mega-phylogeny
dc.title Data from: Riders in the sky (islands): using a mega-phylogenetic approach to understand plant species distribution and coexistence at the altitudinal limits of angiosperm plant life
dc.type Article
dwc.ScientificName Spermatophyta
dc.contributor.correspondingAuthor Marx, Hannah E.
prism.publicationName Journal of Biogeography
dryad.fundingEntity DGE-1144254@National Science Foundation (United States)
dryad.dansTransferDate 2018-05-20T10:09:21.433+0000
dryad.dansArchiveDate 2018-05-20T12:03:35.410+0000

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Title phy.Alpes
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Description Time calibrated community phylogeny of the Écrins National Park, France. Bootstrap support values are labeled on the nodes.
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Title EcrinsCommunityMatrix
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Description Species list for the Écrins National Park, France. Columns show alien origin, endemic status, GenBank accession numbers for each gene region that were used to estimate phylogenetic relationships, and the presence/absence of each species in the three species pools (Regional, All Summits, LGM), and across each alpine summit sampled in this study.
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Description DNA alignments of each gene region (ITS, atpB, matK, rbcL, and trnTLF) and the concatenated alignment (.phy).
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Description Tree files for gene trees estimated for each gene region (ITS, atpB, matK, rbcL, and trnTLF). Bootstrap support values are labeled on the nodes.
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