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Using Cholesky Decomposition to Explore Individual Differences in Longitudinal Relations between Reading Skills
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Ontogeny and Consistent Individual Differences Mediate Trophic Interactions.

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    Ecologists must account for intraspecific variation, including ontogeny and individual differences, to accurately predict community composition and species interactions. Understanding these factors is crucial for ecological and evolutionary dynamics.

    Keywords:
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    Area of Science:

    • Ecology
    • Community Ecology
    • Evolutionary Biology

    Background:

    • Ecological studies often overlook intraspecific variation, focusing instead on species-level traits.
    • Intraspecific variation arises from ontogeny (developmental stage) and consistent individual differences (behavioral traits).
    • The combined effects of ontogeny and individual differences on community dynamics remain understudied.

    Purpose of the Study:

    • To investigate how ontogeny and consistent individual differences in activity rates influence intraguild predation in larval dragonfly communities.
    • To determine if the impact of activity rate on predation varies with an organism's functional role (predator vs. prey).
    • To explore the community-level consequences of the interaction between ontogeny and individual differences.

    Main Methods:

    • Manipulated consistent individual differences in activity rate in larval dragonflies.
    • Manipulated the ontogeny of focal and interacting species within dragonfly communities.
    • Observed patterns of intraguild predation under experimental conditions.

    Main Results:

    • Activity rate was identified as a consistent individual trait in larval dragonflies.
    • The influence of activity rate on intraguild predation was dependent on the organism's functional role (predator or prey).
    • An organism's functional role shifted across ontogeny for both focal and interacting species.

    Conclusions:

    • Ontogeny and consistent individual differences interact to create significant intraspecific variation.
    • This interaction has crucial implications for species interactions, community composition, and eco-evolutionary processes.
    • Future ecological models should incorporate both ontogenetic and individual variation for greater accuracy.