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    Author(s): Steven F. Railsback; Bret C. Harvey
    Date: 2013
    Source: Trends in Ecology and Evolution. 28(2): 119-125.
    Publication Series: Scientific Journal (JRNL)
    PDF: View PDF  (327.91 KB)

    Description

    Many ecologists believe that there is a lack of foraging theory that works in community contexts, for populations of unique individuals each making trade-offs between food and risk that are subject to feedbacks from behavior of others. Such theory is necessary to reproduce the trait-mediated trophic interactions now recognized as widespread and strong. Game theory can address feedbacks but does not provide foraging theory for unique individuals in variable environments. ‘State and prediction-based theory’ (SPT) is a new approach that combines existing trade-off methods with routine updating: individuals regularly predict future food availability and risk from current conditions to optimize a fitness measure. SPT can reproduce a variety of realistic foraging behaviors and trait-mediated trophic interactions with feedbacks, even when the environment is unpredictable.

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    Citation

    Railsback, Steven F.; Harvey, Bret C. 2013. Trait-mediated trophic interactions: is foraging theory keeping up? Trends in Ecology and Evolution. 28(2): 119-125.

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    Keywords

    individual-based models, foraging theory, trade-offs, trait-mediated trophic interactions

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