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dc.contributor.authorPie, Marcio R.en_US
dc.contributor.authorWeitz, Joshua S.en_US
dc.date.accessioned2010-01-29T20:59:25Z
dc.date.available2010-01-29T20:59:25Z
dc.date.issued2005-07
dc.identifier.citationMarcio R. Pie and Joshua S. Weitz, "A Null Model of Morphospace Occupation," American Naturalist (2005) 166: E1–E13.en
dc.identifier.issn0003-0147
dc.identifier.urihttp://hdl.handle.net/1853/31854
dc.description© 2005 by The University of Chicago. The electronic version of this article is the complete one and can be found online at: http://www.journals.uchicago.edu/doi/abs/10.1086/430727en
dc.descriptionDOI: 10.1086/430727
dc.description.abstractProgress in understanding the relationship between lineage diversity, morphological diversity, and morphospace dynamics has been hampered by the lack of an appropriate null model of morphospace occupation. In this article, we introduce a simple class of models based on branching random walks (BRWs) for continuous traits. We show that many of the observed patterns of morphospace occupation might be simply a consequence of the dynamics of BRWs and therefore might not require special explanations.We also provide expected patterns of morphospace occupation according to a number of different conditions. In particular, we model BRWs on neutral landscapes and demonstrate that clumping in morphospace is possible even in the absence of adaptive landscapes with well-defined peaks and valleys. The quantitative definition of the BRW provides a means to analyze, both computationally and analytically, patterns of morphospace occupation according to different hypotheses.en
dc.language.isoen_USen
dc.publisherGeorgia Institute of Technologyen
dc.subjectMorphospaceen
dc.subjectRandom walken
dc.subjectEvolutionen
dc.subjectDiversificationen
dc.subjectNull modelen
dc.subjectNeutral theoryen
dc.titleA Null Model of Morphospace Occupationen
dc.typeArticleen
dc.contributor.corporatenameBoston University. Dept. of Biologyen_US
dc.contributor.corporatenamePrinceton University. Dept. of Ecology and Evolutionary Biologyen_US
dc.publisher.originalThe University of Chicago
dc.identifier.doi10.1086/430727


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