Unbound MEDLINE

Evolutionary conservation of species' roles in food webs.

Abstract

Studies of ecological networks (the web of interactions between species in a community) demonstrate an intricate link between a community's structure and its long-term viability. It remains unclear, however, how much a community's persistence depends on the identities of the species present, or how much the role played by each species varies as a function of the community in which it is found. We measured species' roles by studying how species are embedded within the overall network and the subsequent dynamic implications. Using data from 32 empirical food webs, we find that species' roles and dynamic importance are inherent species attributes and can be extrapolated across communities on the basis of taxonomic classification alone. Our results illustrate the variability of roles across species and communities and the relative importance of distinct species groups when attempting to conserve ecological communities.

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  • Publisher Full Text
  • Authors

    Stouffer DB, Sales-Pardo M, Sirer MI, Bascompte J

    Institution

    Integrative Ecology Group, Estación Biológica de Doñana (EBD-CSIC), Sevilla, Spain.

    Source

    Science (New York, N.Y.) 335:6075 2012 Mar 23 pg 1489-92

    MeSH

    Animals
    Biological Evolution
    Biota
    Ecosystem
    Food Chain
    Phylogeny

    Pub Type(s)

    Journal Article
    Research Support, Non-U.S. Gov't

    Language

    eng

    PubMed ID

    22442483