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Related Experiment Videos

Evolution on the level of communities.

D S Wilson

    Science (New York, N.Y.)
    |June 25, 1976
    PubMed
    Summary
    This summary is machine-generated.

    Natural selection can be influenced by an organism's community impact, especially with spatial variations. This suggests that community-level evolution is possible without violating individual selection principles.

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    Area of Science:

    • Ecology
    • Evolutionary Biology
    • Community Dynamics

    Background:

    • Traditional natural selection models assume limited feedback between organismal effects and individual fitness.
    • Organismal impacts on the community are typically not considered in fitness calculations.

    Purpose of the Study:

    • To explore how spatial variation in community composition can alter the feedback of organismal effects on individual fitness.
    • To investigate the potential for community-level evolution under specific ecological conditions.

    Main Methods:

    • Theoretical modeling of ecological interactions and selection pressures.
    • Analysis of how spatial heterogeneity influences the evolution of organismal traits related to community function.

    Main Results:

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    • Spatial variation in community composition allows organisms to perceive their impact on the community.
    • This perception can lead to differential fitness, driving community-level evolutionary changes.
    • Organisms may evolve to perform specific functions within their community.

    Conclusions:

    • Community-level evolution is a plausible outcome when spatial variation exists.
    • The concept of an organism evolving for its community 'function' can be reconciled with individual selection theory.
    • Ecological context and spatial structure are critical factors in evolutionary dynamics.