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Global patterns and drivers of fish reproductive potential on coral reefs

Author

Listed:
  • Jeneen Hadj-Hammou

    (Lancaster University)

  • Joshua E. Cinner

    (University of Sydney)

  • Diego R. Barneche

    (Australian Institute of Marine Science
    The University of Western Australia)

  • Iain R. Caldwell

    (James Cook University)

  • David Mouillot

    (Ifremer)

  • James P. W. Robinson

    (Lancaster University)

  • Nina M. D. Schiettekatte

    (University of Hawai’i at Mānoa)

  • Alexandre C. Siqueira

    (Edith Cowan University
    College of Science and Engineering, James Cook University)

  • Brett M. Taylor

    (UOG Station)

  • Nicholas A. J. Graham

    (Lancaster University)

Abstract

Fish fecundity scales hyperallometrically with body mass, meaning larger females produce disproportionately more eggs than smaller ones. We explore this relationship beyond the species-level to estimate the “reproductive potential” of 1633 coral reef sites distributed globally. We find that, at the site-level, reproductive potential scales hyperallometrically with assemblage biomass, but with a smaller median exponent than at the species-level. Across all families, modelled reproductive potential is greater in fully protected sites versus fished sites. This difference is most pronounced for the important fisheries family, Serranidae. When comparing a scenario where 30% of sites are randomly fully protected to a current protection scenario, we estimate an increase in the reproductive potential of all families, and particularly for Serranidae. Such results point to the possible ecological benefits of the 30 × 30 global conservation target and showcase management options to promote the sustainability of population replenishment.

Suggested Citation

  • Jeneen Hadj-Hammou & Joshua E. Cinner & Diego R. Barneche & Iain R. Caldwell & David Mouillot & James P. W. Robinson & Nina M. D. Schiettekatte & Alexandre C. Siqueira & Brett M. Taylor & Nicholas A. , 2024. "Global patterns and drivers of fish reproductive potential on coral reefs," Nature Communications, Nature, vol. 15(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-50367-0
    DOI: 10.1038/s41467-024-50367-0
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    References listed on IDEAS

    as
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