title: Dispersal assembly of rain forest tree communities across the Amazon basin.
abstract: We investigate patterns of historical assembly of tree communities across Amazonia using a newly developed phylogeny for the species-rich neotropical tree genusIngaWe compare our results with those for three other ecologically important, diverse, and abundant Amazonian tree lineages,Swartzia, Protieae, andGuatteriaOur analyses using phylogenetic diversity metrics demonstrate a clear lack of geographic phylogenetic structure, and show that local communities ofIngaand regional communities of all four lineages are assembled by dispersal across Amazonia. The importance of dispersal in the biogeography ofIngaand other tree genera in Amazonian and Guianan rain forests suggests that speciation is not driven by vicariance, and that allopatric isolation following dispersal may be involved in the speciation process. A clear implication of these results is that over evolutionary timescales, the metacommunity for any local or regional tree community in the Amazon is the entire Amazon basin.
authors.affiliation: School of GeoSciences, University of Edinburgh, Edinburgh EH9 3FF, United Kingdom; kyle.dexter@ed.ac.uk.|Royal Botanic Garden Edinburgh, Edinburgh EH3 5LR, United Kingdom.
authors.forename: Kyle G
authors.identifier: 0000-0001-9232-5221
authors.initials: KG
authors.lastname: Dexter
authors.affiliation: Department of Plant Sciences and Plant Pathology, Montana State University, Bozeman, MT 59717.
authors.forename: Mathew
authors.initials: M
authors.lastname: Lavin
authors.affiliation: Institute of Systematic Botany, New York Botanical Garden, Bronx, NY 10458.
authors.forename: Benjamin M
authors.initials: BM
authors.lastname: Torke
authors.affiliation: Institute of Evolutionary Biology, University of Edinburgh, Edinburgh EH9 3FL, United Kingdom.
authors.forename: Alex D
authors.initials: AD
authors.lastname: Twyford
authors.affiliation: Biology Department, University of Utah, Salt Lake City, UT 84112.|Smithsonian Tropical Research Institute, Apartado 0843-03092, Balboa, Ancon, Panama.
authors.forename: Thomas A
authors.initials: TA
authors.lastname: Kursar
authors.affiliation: Biology Department, University of Utah, Salt Lake City, UT 84112.|Smithsonian Tropical Research Institute, Apartado 0843-03092, Balboa, Ancon, Panama.
authors.forename: Phyllis D
authors.initials: PD
authors.lastname: Coley
authors.affiliation: Royal Botanic Garden Edinburgh, Edinburgh EH3 5LR, United Kingdom.
authors.forename: Camila
authors.initials: C
authors.lastname: Drake
authors.affiliation: Royal Botanic Garden Edinburgh, Edinburgh EH3 5LR, United Kingdom.
authors.forename: Ruth
authors.initials: R
authors.lastname: Hollands
authors.affiliation: Royal Botanic Garden Edinburgh, Edinburgh EH3 5LR, United Kingdom.
authors.forename: R Toby
authors.initials: RT
authors.lastname: Pennington
mesh_terms: D044822:Biodiversity; D005843:Geography; D010802:Phylogeny; D065947:Rainforest; D013045:Species Specificity; D014197:Trees / Q000145:classification / Q000235:genetics*
keywords: Amazonia; biogeography; community assembly; phylogenetic structure; tropical trees