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Biogeography

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3 papers 0 to 25 followers Review of current and past research in biogeography, specifically in angiosperms
https://www.readbyqxmd.com/read/26346427/phylogeography-of-cliff-dwelling-relicts-with-a-highly-narrow-and-disjunct-distribution-in-the-western-mediterranean
#1
Jose L Silva, So-Yeon Lim, Seung-Chul Kim, José A Mejías
PREMISE OF THE STUDY: The high biodiversity in the Baetic-Rifan hotspot of Mediterranean region is shaped by complex geological and climatic histories and has been a subject of recent intensive studies. However, very little is known about phylogenetic and biogeographic history of three rare and critically endangered cliff-dwelling species of Sonchus in section Pustulati in this region. METHODS: We investigated the genetic variation and phylogenetic relationships of populations based on nuclear (ITS/ETS) and plastid (3'trnL-ndhJ/psaI-accD) DNA sequences, and amplified fragment length polymorphisms (AFLPs)...
September 2015: American Journal of Botany
https://www.readbyqxmd.com/read/26173113/biogeography-of-mediterranean-hotspot-biodiversity-re-evaluating-the-tertiary-relict-hypothesis-of-macaronesian-laurel-forests
#2
Paulina Kondraskov, Nicole Schütz, Christina Schüßler, Miguel Menezes de Sequeira, Arnoldo Santos Guerra, Juli Caujapé-Castells, Ruth Jaén-Molina, Águedo Marrero-Rodríguez, Marcus A Koch, Peter Linder, Johanna Kovar-Eder, Mike Thiv
The Macaronesian laurel forests (MLF) are dominated by trees with a laurophyll habit comparable to evergreen humid forests which were scattered across Europe and the Mediterranean in the Paleogene and Neogene. Therefore, MLF are traditionally regarded as an old, 'Tertiary relict' vegetation type. Here we address the question if key taxa of the MLF are relictual. We evaluated the relict hypothesis consulting fossil data and analyses based on molecular phylogenies of 18 representative species. For molecular dating we used the program BEAST, for ancestral trait reconstructions BayesTraits and Lagrange to infer ancestral areas...
2015: PloS One
https://www.readbyqxmd.com/read/26095958/phylogeny-and-biogeography-of-the-american-live-oaks-quercus-subsection-virentes-a-genomic-and-population-genetics-approach
#3
Jeannine Cavender-Bares, Antonio González-Rodríguez, Deren A R Eaton, Andrew A L Hipp, Anne Beulke, Paul S Manos
The nature and timing of evolution of niche differentiation among closely related species remains an important question in ecology and evolution. The American live oak clade, Virentes, which spans the unglaciated temperate and tropical regions of North America and Mesoamerica, provides an instructive system in which to examine speciation and niche evolution. We generated a fossil-calibrated phylogeny of Virentes using RADseq data to estimate divergence times and used nuclear microsatellites, chloroplast sequences and an intron region of nitrate reductase (NIA-i3) to examine genetic diversity within species, rates of gene flow among species and ancestral population size of disjunct sister species...
July 2015: Molecular Ecology
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