Tracking thicket through space and time : insights into the evolutionary history of the Albany Subtropical Thicket from comparative phylogeography and distribution modelling

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dc.contributor.advisorHedderson, TAen_ZA
dc.contributor.advisorCowling, RMen_ZA
dc.contributor.authorPotts, Alastair Johnen_ZA
dc.date.accessioned2015-01-14T07:20:44Z
dc.date.available2015-01-14T07:20:44Z
dc.date.issued2011en_ZA
dc.descriptionIncludes abstract.en_ZA
dc.descriptionIncludes bibliographical references (leaves 191-219).en_ZA
dc.description.abstractAlbany Subtropical Thicket (AST) is a species-rich biome restricted to the coastal lowlands of the southern Cape region of South Africa. Its Quaternary history is poorly understood, but climatic changes associated with Pleistocene glacial cycles may have profoundly affected the distributions, gene flows, and demographies of species. The glacial refugia hypothesis predicts that AST retracted into fragmented refugia during glacial cycles. The evolutionarily discrete drainage basin (EDDB) hypothesis suggests that the prevailing topography played an important population-structuring role. I evaluate these two hypotheses by combining community and species distribution models with multigene comparative phylogeography of three AST species Pappea capensis, Nymania capensis, and Schotia afra. Distribution models support the glacial refugia hypothesis, with highly reduced and fragmented distributions postdicted for the Last Glacial Maximum. These models, projected onto two climate scenarios for 2050, give a positive outlook for the future of AST, with no dramatic shifts or reduction in appropriate climate...en_ZA
dc.identifier.apacitationPotts, A. J. (2011). <i>Tracking thicket through space and time : insights into the evolutionary history of the Albany Subtropical Thicket from comparative phylogeography and distribution modelling</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Biological Sciences. Retrieved from http://hdl.handle.net/11427/12174en_ZA
dc.identifier.chicagocitationPotts, Alastair John. <i>"Tracking thicket through space and time : insights into the evolutionary history of the Albany Subtropical Thicket from comparative phylogeography and distribution modelling."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Biological Sciences, 2011. http://hdl.handle.net/11427/12174en_ZA
dc.identifier.citationPotts, A. 2011. Tracking thicket through space and time : insights into the evolutionary history of the Albany Subtropical Thicket from comparative phylogeography and distribution modelling. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Potts, Alastair John AB - Albany Subtropical Thicket (AST) is a species-rich biome restricted to the coastal lowlands of the southern Cape region of South Africa. Its Quaternary history is poorly understood, but climatic changes associated with Pleistocene glacial cycles may have profoundly affected the distributions, gene flows, and demographies of species. The glacial refugia hypothesis predicts that AST retracted into fragmented refugia during glacial cycles. The evolutionarily discrete drainage basin (EDDB) hypothesis suggests that the prevailing topography played an important population-structuring role. I evaluate these two hypotheses by combining community and species distribution models with multigene comparative phylogeography of three AST species Pappea capensis, Nymania capensis, and Schotia afra. Distribution models support the glacial refugia hypothesis, with highly reduced and fragmented distributions postdicted for the Last Glacial Maximum. These models, projected onto two climate scenarios for 2050, give a positive outlook for the future of AST, with no dramatic shifts or reduction in appropriate climate... DA - 2011 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2011 T1 - Tracking thicket through space and time : insights into the evolutionary history of the Albany Subtropical Thicket from comparative phylogeography and distribution modelling TI - Tracking thicket through space and time : insights into the evolutionary history of the Albany Subtropical Thicket from comparative phylogeography and distribution modelling UR - http://hdl.handle.net/11427/12174 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/12174
dc.identifier.vancouvercitationPotts AJ. Tracking thicket through space and time : insights into the evolutionary history of the Albany Subtropical Thicket from comparative phylogeography and distribution modelling. [Thesis]. University of Cape Town ,Faculty of Science ,Department of Biological Sciences, 2011 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/12174en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDepartment of Biological Sciencesen_ZA
dc.publisher.facultyFaculty of Scienceen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherBotanyen_ZA
dc.titleTracking thicket through space and time : insights into the evolutionary history of the Albany Subtropical Thicket from comparative phylogeography and distribution modellingen_ZA
dc.typeDoctoral Thesis
dc.type.qualificationlevelDoctoral
dc.type.qualificationnamePhDen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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