Birds, molecules, and evolutionary patterns among Africa's islands in the sky

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dc.contributor.advisorCrowe, Timothy Men_ZA
dc.contributor.authorBowie, Rauri Charles Kerren_ZA
dc.date.accessioned2014-08-13T14:17:07Z
dc.date.available2014-08-13T14:17:07Z
dc.date.issued2003en_ZA
dc.descriptionIncludes bibliographical references.en_ZA
dc.description.abstractCombing results from phylogenetic and population level studies suggests that climatic cycling has had a profound influence on montane bird speciation in Africa. The results from this thesis suggest that there is deep genetic divergence between many clades (8-12%) of montane passerine birds in Africa, with some shallow divergence towards the tips (4-6%). For widespread species reciprocal monophyly has not been reached in some instances, but generally there is some support for the refuge idea that isolation (fragmentation) of montane forests has facilitated speciation. However, most speciation events happened well before the Pleistocene and therefore the Pleistocene Refugia Hypothesis is not appropriate as a model with which to explain patterns of montane bird diversification in Africa. Rather, both dispersal and vicariance have played important roles in shaping montane bird communities. Thus, a refugia type model does work, but only within the context of pulsed or cyclic expansion and contraction of montane forests, supported in thus study by the consistent recovery of spatially structured areas of endemism, despite varying temporal dynamics.en_ZA
dc.identifier.apacitationBowie, R. C. K. (2003). <i>Birds, molecules, and evolutionary patterns among Africa's islands in the sky</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Biological Sciences. Retrieved from http://hdl.handle.net/11427/6239en_ZA
dc.identifier.chicagocitationBowie, Rauri Charles Kerr. <i>"Birds, molecules, and evolutionary patterns among Africa's islands in the sky."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Biological Sciences, 2003. http://hdl.handle.net/11427/6239en_ZA
dc.identifier.citationBowie, R. 2003. Birds, molecules, and evolutionary patterns among Africa's islands in the sky. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Bowie, Rauri Charles Kerr AB - Combing results from phylogenetic and population level studies suggests that climatic cycling has had a profound influence on montane bird speciation in Africa. The results from this thesis suggest that there is deep genetic divergence between many clades (8-12%) of montane passerine birds in Africa, with some shallow divergence towards the tips (4-6%). For widespread species reciprocal monophyly has not been reached in some instances, but generally there is some support for the refuge idea that isolation (fragmentation) of montane forests has facilitated speciation. However, most speciation events happened well before the Pleistocene and therefore the Pleistocene Refugia Hypothesis is not appropriate as a model with which to explain patterns of montane bird diversification in Africa. Rather, both dispersal and vicariance have played important roles in shaping montane bird communities. Thus, a refugia type model does work, but only within the context of pulsed or cyclic expansion and contraction of montane forests, supported in thus study by the consistent recovery of spatially structured areas of endemism, despite varying temporal dynamics. DA - 2003 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2003 T1 - Birds, molecules, and evolutionary patterns among Africa's islands in the sky TI - Birds, molecules, and evolutionary patterns among Africa's islands in the sky UR - http://hdl.handle.net/11427/6239 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/6239
dc.identifier.vancouvercitationBowie RCK. Birds, molecules, and evolutionary patterns among Africa's islands in the sky. [Thesis]. University of Cape Town ,Faculty of Science ,Department of Biological Sciences, 2003 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/6239en_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.otherZoologyen_ZA
dc.titleBirds, molecules, and evolutionary patterns among Africa's islands in the skyen_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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