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    Empirical phylogenies and species abundance distributions are consistent with pre-equilibrium dynamics of neutral community models with gene flow

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    Bonnet-Lebrun_et_al-2017-Evolution.pdf
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    Type
    Article
    Authors
    Bonnet-Lebrun, Anne-Sophie
    Manica, Andrea
    Eriksson, Anders cc
    Rodrigues, Ana S.L.
    KAUST Department
    Biological and Environmental Sciences and Engineering (BESE) Division
    Integrative Systems Biology Lab
    Date
    2017-05-04
    Online Publication Date
    2017-05-04
    Print Publication Date
    2017-05
    Permanent link to this record
    http://hdl.handle.net/10754/623082
    
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    Abstract
    Community characteristics reflect past ecological and evolutionary dynamics. Here, we investigate whether it is possible to obtain realistically shaped modelled communities - i.e., with phylogenetic trees and species abundance distributions shaped similarly to typical empirical bird and mammal communities - from neutral community models. To test the effect of gene flow, we contrasted two spatially explicit individual-based neutral models: one with protracted speciation, delayed by gene flow, and one with point mutation speciation, unaffected by gene flow. The former produced more realistic communities (shape of phylogenetic tree and species-abundance distribution), consistent with gene flow being a key process in macro-evolutionary dynamics. Earlier models struggled to capture the empirically observed branching tempo in phylogenetic trees, as measured by the gamma statistic. We show that the low gamma values typical of empirical trees can be obtained in models with protracted speciation, in pre-equilibrium communities developing from an initially abundant and widespread species. This was even more so in communities sampled incompletely, particularly if the unknown species are the youngest. Overall, our results demonstrate that the characteristics of empirical communities that we have studied can, to a large extent, be explained through a purely neutral model under pre-equilibrium conditions. This article is protected by copyright. All rights reserved.
    Citation
    Bonnet-Lebrun A-S, Manica A, Eriksson A, Rodrigues ASL (2017) Empirical phylogenies and species abundance distributions are consistent with pre-equilibrium dynamics of neutral community models with gene flow. Evolution. Available: http://dx.doi.org/10.1111/evo.13228.
    Sponsors
    We are grateful to F. Laroche and F. Jabot for very constructive discussions and to O. Gimenez for technical support. We also thank J. Rosindell, A. Hurlbert and two other (anonymous) referees for constructive comments that much contributed to improving the manuscript.
    Publisher
    Wiley
    Journal
    Evolution
    DOI
    10.1111/evo.13228
    Additional Links
    http://onlinelibrary.wiley.com/doi/10.1111/evo.13228/abstract
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    • [Dataset]
      Bonnet-Lebrun, A.-S., Manica, A., Eriksson, A., Rodrigues, A. S. L., & Rodrigues, A. S. L. (2017). Data from: Empirical phylogenies and species abundance distributions are consistent with pre-equilibrium dynamics of neutral community models with gene flow (Version 1) [Data set]. Dryad. https://doi.org/10.5061/DRYAD.98283. DOI: 10.5061/dryad.98283 Handle: 10754/663711
    ae974a485f413a2113503eed53cd6c53
    10.1111/evo.13228
    Scopus Count
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    Articles; Biological and Environmental Science and Engineering (BESE) Division

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