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    The Influence of Phylogenetic and Functional Similarity on Species Coexistence Through Space and Time

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    Author
    Swenson, Nathan Garrick
    Issue Date
    2008
    Keywords
    Ecology & Evolutionary Biology
    Advisor
    Enquist, Brian J.
    Committee Chair
    Enquist, Brian J.
    
    Metadata
    Show full item record
    Publisher
    The University of Arizona.
    Rights
    Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
    Abstract
    The problem of species diversity and co-existence in hyper-diverse communities remains. Traditionally ecologists have approached this problem from examining patterns of co-occurrence, interaction matrices and abundance distributions. This work, while productive, generally has rarely explored the role of shared ancestry and species-specific quantitative function in promoting species diversity and co-existence. This has been a critical oversight as simply analyzing the list of Latin binomials in an assemblage ignores the relatedness between taxa as well as the diversity in organismal form and function--the very information relevant to evolutionary, ecological, and historical hypotheses about the distribution of diversity and community assembly. The following research is designed to investigate the role of phylogenetic and functional similarity on species diversity and co-existence through space and time in diverse tropical tree communities. Specifically, I investigate: (i) the role of phylogenetic relatedness in determining community structure from very local to large regional spatial scales; (ii) the role of phylogeny in determining the structure of tree communities at different strategraphic levels in the canopy; (iii) the power of recently developed phylogenetic analyses to detect non-random patterns of co-existence in communities when the phylogenetic tree used is not completely resolved; (iv) the role of functional similarity in promoting co-existence in a Neotropical dry forest through space and across body sizes; (v) whether decadal long trends in forest composition can be explained on the basis of species-specific function; and (vi) variability in a key functional trait across New World forest communities and along the Angiosperm phylogeny.
    Type
    text
    Electronic Dissertation
    Degree Name
    PhD
    Degree Level
    doctoral
    Degree Program
    Ecology & Evolutionary Biology
    Graduate College
    Degree Grantor
    University of Arizona
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