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    Diversification processes in an island radiation of shrews

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    Esselstyn_ku_0099D_10789_DATA_1.pdf (5.671Mb)
    Issue Date
    2010-04-22
    Author
    Esselstyn, Jacob Aaron
    Publisher
    University of Kansas
    Format
    155 pages
    Type
    Dissertation
    Degree Level
    Ph.D.
    Discipline
    Ecology & Evolutionary Biology
    Rights
    This item is protected by copyright and unless otherwise specified the copyright of this thesis/dissertation is held by the author.
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    Abstract
    Southeast Asian mammals are known for their remarkable levels of diversity and endemism. However, few explicit tests of the mechanisms that may promote or inhibit speciation have been conducted on regional clades. I use phylogenetic estimates and tree shape analyses to explore the tempo and mode of diversification in Southeast Asian shrews (Soricomorpha: Crocidura), and to consider a set of geological, climatic, and ecological forces that my have shaped current patterns of diversity. I find no association of diversification rates with Pleistocene sea-level fluctuations or volcanic uplift that was concentrated during the Miocene and Pliocene. However, sea-level fluctuations appear to have been a factor in the generation of phylogeographic diversity in the Philippines. In general, Crocidura appears to have diversified at a consistent tempo and usually in allopatry. A lack of ecological innovation may have limited the extent of diversification in the Philippines, but perhaps not on Sulawesi.
    URI
    http://hdl.handle.net/1808/6429
    Collections
    • Dissertations [2980]
    • Ecology and Evolutionary Biology Dissertations and Theses [195]

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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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