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Larval dispersal drives trophic structure across Pacific coral reefs

Author

Listed:
  • Adrian C. Stier

    (National Center for Ecological Analysis and Synthesis
    University of British Columbia
    University of Florida)

  • Andrew M. Hein

    (University of Florida
    Princeton University)

  • Valeriano Parravicini

    (CRIOBE, USR 3278 CNRS-EPHE-UPVD, LABEX Corail, University of Perpignan
    Institut de Recherche Pour le Développement
    CESAB-FRB, Immeuble Henri Poincaré, Domaine du Petit Arbois)

  • Michel Kulbicki

    (Institut de Recherche Pour le Développement)

Abstract

Top predators are a critical part of healthy ecosystems. Yet, these species are often absent from spatially isolated habitats leading to the pervasive view that fragmented ecological communities collapse from the top down. Here we study reef fish from coral reef communities across the Pacific Ocean. Our analysis shows that species richness of reef fish top predators is relatively stable across habitats that vary widely in spatial isolation and total species richness. In contrast, species richness of prey reef fish declines rapidly with increasing isolation. By consequence, species-poor communities from isolated islands have three times as many predator species per prey species as near-shore communities. We develop and test a colonization–extinction model to reveal how larval dispersal patterns shape this ocean-scale gradient in trophic structure.

Suggested Citation

  • Adrian C. Stier & Andrew M. Hein & Valeriano Parravicini & Michel Kulbicki, 2014. "Larval dispersal drives trophic structure across Pacific coral reefs," Nature Communications, Nature, vol. 5(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms6575
    DOI: 10.1038/ncomms6575
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