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    Coupled dynamics of body mass and population growth in response to environmental change

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    Armitage_2010.pdf (1.142Mb)
    Issue Date
    2010-07-22
    Author
    Ozgul, Arpat
    Childs, Dylan Z.
    Oli, Madan K.
    Armitage, Kenneth B.
    Blumstein, Daniel T.
    Olson, Lucretia E.
    Tuljapurkar, Shripad
    Coulson, Tim
    Publisher
    Nature Publishing Group
    Type
    Article
    Article Version
    Scholarly/refereed, author accepted manuscript
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    Abstract
    Environmental change has altered the phenology, morphological traits and population dynamics of many species1,2. However, the links underlying these joint responses remain largely unknown due to a paucity of long-term data and the lack of an appropriate analytical framework3. Here, we investigate the link between phenotypic and demographic responses to environmental change using a novel methodology and an exceptional long-term (1976–2008) dataset from a hibernating mammal (the yellow-bellied marmot) inhabiting a dynamic subalpine habitat. We demonstrate how earlier emergence from hibernation and earlier weaning of young has led to a longer growing season and larger body masses prior to hibernation. The resulting shift in both the phenotype and the relationship between phenotype and fitness components led to a decline in adult mortality, which in turn triggered an abrupt increase in population size in recent years. Direct and trait-mediated effects of environmental change had comparable contributions to the observed dramatic increase in population growth. Our results help explain how a shift in phenology can cause simultaneous phenotypic and demographic changes, and highlight the need for a theory integrating ecological and evolutionary dynamics in stochastic environments4,5.
    URI
    http://hdl.handle.net/1808/25903
    DOI
    https://doi.org/10.1038/nature09210
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    • Ecology and Evolutionary Biology Scholarly Works [1403]
    Citation
    Ozgul, A., Childs, D. Z., Oli, M. K., Armitage, K. B., Blumstein, D. T., Olson, L. E., … Coulson, T. (2010). Coupled dynamics of body mass and population growth in response to environmental change. Nature, 466(7305), 482–485. http://doi.org/10.1038/nature09210

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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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