Determinants of reef fish assemblages in tropical Oceanic islands

Juan P. Quimbayo, Murilo S. Dias, Michel Kulbicki, Thiago C. Mendes, Robert W. Lamb, Andrew F. Johnson, Octavio Aburto-Oropeza, Juan J. Alvarado, Arturo A. Bocos, Carlos E.L. Ferreira, Eric Garcia, Osmar J. Luiz, Ismael Mascareñas-Osorio, Hudson T. Pinheiro, Fabian Rodriguez-Zaragoza, Eva Salas, Fernando A. Zapata, Sergio R. Floeter

    Research output: Contribution to journalArticleResearchpeer-review

    Abstract

    Diversity patterns are determined by biogeographic, energetic, and anthropogenic factors, yet few studies have combined them into a large-scale framework in order to decouple and compare their relative effects on fish faunas. Using an empirical dataset derived from 1527 underwater visual censuses (UVC) at 18 oceanic islands (five different marine provinces), we determined the relative influence of such factors on reef fish species richness, functional dispersion, density and biomass estimated from each UVC unit. Species richness presented low variation but was high at large island sites. High functional dispersion, density, and biomass were found at islands with large local species pool and distance from nearest reef. Primary productivity positively affected fish richness, density and biomass confirming that more productive areas support larger populations, and higher biomass and richness on oceanic islands. Islands densely populated by humans had lower fish species richness and biomass reflecting anthropogenic effects. Species richness, functional dispersion, and biomass were positively related to distance from the mainland. Overall, species richness and fish density were mainly influenced by biogeographical and energetic factors, whereas functional dispersion and biomass were strongly influenced by anthropogenic factors. Our results extend previous hypotheses for different assemblage metrics estimated from empirical data and confirm the negative impact of humans on fish assemblages, highlighting the need for conservation of oceanic islands.

    Original languageEnglish
    Pages (from-to)77-87
    Number of pages11
    JournalEcography
    Volume42
    Issue number1
    Early online date21 Jun 2018
    DOIs
    Publication statusPublished - Jan 2019

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    tropical fish
    reefs
    reef
    biomass
    species richness
    fish
    species diversity
    anthropogenic activities
    census
    energetics
    species pool
    anthropogenic effect
    primary productivity
    fauna
    productivity

    Cite this

    Quimbayo, J. P., Dias, M. S., Kulbicki, M., Mendes, T. C., Lamb, R. W., Johnson, A. F., ... Floeter, S. R. (2019). Determinants of reef fish assemblages in tropical Oceanic islands. Ecography, 42(1), 77-87. https://doi.org/10.1111/ecog.03506
    Quimbayo, Juan P. ; Dias, Murilo S. ; Kulbicki, Michel ; Mendes, Thiago C. ; Lamb, Robert W. ; Johnson, Andrew F. ; Aburto-Oropeza, Octavio ; Alvarado, Juan J. ; Bocos, Arturo A. ; Ferreira, Carlos E.L. ; Garcia, Eric ; Luiz, Osmar J. ; Mascareñas-Osorio, Ismael ; Pinheiro, Hudson T. ; Rodriguez-Zaragoza, Fabian ; Salas, Eva ; Zapata, Fernando A. ; Floeter, Sergio R. / Determinants of reef fish assemblages in tropical Oceanic islands. In: Ecography. 2019 ; Vol. 42, No. 1. pp. 77-87.
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    abstract = "Diversity patterns are determined by biogeographic, energetic, and anthropogenic factors, yet few studies have combined them into a large-scale framework in order to decouple and compare their relative effects on fish faunas. Using an empirical dataset derived from 1527 underwater visual censuses (UVC) at 18 oceanic islands (five different marine provinces), we determined the relative influence of such factors on reef fish species richness, functional dispersion, density and biomass estimated from each UVC unit. Species richness presented low variation but was high at large island sites. High functional dispersion, density, and biomass were found at islands with large local species pool and distance from nearest reef. Primary productivity positively affected fish richness, density and biomass confirming that more productive areas support larger populations, and higher biomass and richness on oceanic islands. Islands densely populated by humans had lower fish species richness and biomass reflecting anthropogenic effects. Species richness, functional dispersion, and biomass were positively related to distance from the mainland. Overall, species richness and fish density were mainly influenced by biogeographical and energetic factors, whereas functional dispersion and biomass were strongly influenced by anthropogenic factors. Our results extend previous hypotheses for different assemblage metrics estimated from empirical data and confirm the negative impact of humans on fish assemblages, highlighting the need for conservation of oceanic islands.",
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    Quimbayo, JP, Dias, MS, Kulbicki, M, Mendes, TC, Lamb, RW, Johnson, AF, Aburto-Oropeza, O, Alvarado, JJ, Bocos, AA, Ferreira, CEL, Garcia, E, Luiz, OJ, Mascareñas-Osorio, I, Pinheiro, HT, Rodriguez-Zaragoza, F, Salas, E, Zapata, FA & Floeter, SR 2019, 'Determinants of reef fish assemblages in tropical Oceanic islands', Ecography, vol. 42, no. 1, pp. 77-87. https://doi.org/10.1111/ecog.03506

    Determinants of reef fish assemblages in tropical Oceanic islands. / Quimbayo, Juan P.; Dias, Murilo S.; Kulbicki, Michel; Mendes, Thiago C.; Lamb, Robert W.; Johnson, Andrew F.; Aburto-Oropeza, Octavio; Alvarado, Juan J.; Bocos, Arturo A.; Ferreira, Carlos E.L.; Garcia, Eric; Luiz, Osmar J.; Mascareñas-Osorio, Ismael; Pinheiro, Hudson T.; Rodriguez-Zaragoza, Fabian; Salas, Eva; Zapata, Fernando A.; Floeter, Sergio R.

    In: Ecography, Vol. 42, No. 1, 01.2019, p. 77-87.

    Research output: Contribution to journalArticleResearchpeer-review

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    AU - Alvarado, Juan J.

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    AU - Ferreira, Carlos E.L.

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    N2 - Diversity patterns are determined by biogeographic, energetic, and anthropogenic factors, yet few studies have combined them into a large-scale framework in order to decouple and compare their relative effects on fish faunas. Using an empirical dataset derived from 1527 underwater visual censuses (UVC) at 18 oceanic islands (five different marine provinces), we determined the relative influence of such factors on reef fish species richness, functional dispersion, density and biomass estimated from each UVC unit. Species richness presented low variation but was high at large island sites. High functional dispersion, density, and biomass were found at islands with large local species pool and distance from nearest reef. Primary productivity positively affected fish richness, density and biomass confirming that more productive areas support larger populations, and higher biomass and richness on oceanic islands. Islands densely populated by humans had lower fish species richness and biomass reflecting anthropogenic effects. Species richness, functional dispersion, and biomass were positively related to distance from the mainland. Overall, species richness and fish density were mainly influenced by biogeographical and energetic factors, whereas functional dispersion and biomass were strongly influenced by anthropogenic factors. Our results extend previous hypotheses for different assemblage metrics estimated from empirical data and confirm the negative impact of humans on fish assemblages, highlighting the need for conservation of oceanic islands.

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    Quimbayo JP, Dias MS, Kulbicki M, Mendes TC, Lamb RW, Johnson AF et al. Determinants of reef fish assemblages in tropical Oceanic islands. Ecography. 2019 Jan;42(1):77-87. https://doi.org/10.1111/ecog.03506