Biogeographical,ecological and morphological structure in a phylogenetic analysis of Ateleia (Swartzieae,Fabaceae) derived from combined molecular,morphological and chemical data |
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Authors: | HELEN E IRELAND GEOFFREY C KITE NIGEL C VEITCH MARK W CHASE BRIAN SCHRIRE MATT LAVIN JOSÉ LINARES R TOBY PENNINGTON |
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Institution: | 1. 7 The Limes, Rushmere St Andrew, Ipswich, Suffolk, IP5 1EA, UK;2. Jodrell Laboratory, Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3DS, UK;3. Herbarium, Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AB, UK;4. Plant Sciences and Plant Pathology, Montana State University, Bozeman, MT 59717, USA;5. Urb. Altos del Palmar Polígono 1, Block D, casa # 9, Santa Ana, El Salvador;6. Royal Botanic Garden Edinburgh, 20a Inverleith Row, Edinburgh EH3 5LR, UK |
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Abstract: | A phylogenetic analysis of combined morphological, chemical and ITS/5.8S sequence data reveals that species of Ateleia are often more genetically than morphologically divergent, and that species thought to be most closely related morphologically are distant relatives within the genus. Ateleia shows niche conservatism, with most species confined to seasonally dry tropical forest in Central America and the Caribbean, and fewer species in the same biome in South America. Four independent transitions to wet forests may have occurred in the genus. The estimated ages of Ateleia lineages spanning Central and South America are either older or younger than the estimated age of closure of the Isthmus of Panama. The older dates clearly suggest that over‐water dispersal is responsible for the distribution of Ateleia that includes the Caribbean Islands. © 2010 The Linnean Society of London, Botanical Journal of the Linnean Society, 2010, 162 , 39–53. |
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Keywords: | ecological speciation Isthmus of Panama Leguminosae Neotropics phylogenetic niche conservatism seasonally dry tropical forest |
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