Phylogenetic biogeography and taxonomy of disjunctly distributed bryophytes |
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Authors: | Jochen HEINRICHS Jrn HENTSCHEL Kathrin FELDBERG Andrea BOMBOSCH Harald SCHNEIDER |
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Institution: | 1. Department of Systematic Botany, Albrecht yon Hailer Institute of Plant Sciences, Georg-August-University, D-37073 Gottingen, Germany 2. Botany Department, Natural History Museum, London SW7 5BD, UK |
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Abstract: | More than 200 research papers on the molecular phylogeny and phylogenetic biogeography of bryophytes have been published since the beginning of this millenium. These papers corroborated assumptions of a complex ge-netic structure of morphologically circumscribed bryophytes, and raised reservations against many morphologically justified species concepts, especially within the mosses. However, many molecular studies allowed for corrections and modifications of morphological classification schemes. Several studies reported that the phylogenetic structure of disjunctly distributed bryophyte species reflects their geographical ranges rather than morphological disparities. Molecular data led to new appraisals of distribution ranges and allowed for the reconstruction of refugia and migra-tion routes. Intercontinental ranges of bryophytes are often caused by dispersal rather than geographical vicariance. Many distribution patterns of disjunct bryophytes are likely formed by processes such as short distance dispersal, rare long distance dispersal events, extinction, recolonization and diversification. |
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Keywords: | bryophytes cryptic speciation disjunctions divergence time estimates Diversity Arrays Technology DNA sequence variation isozymes molecular phylogeny |
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