Coral Reefs

, Volume 29, Issue 2, pp 527–532 | Cite as

Predators reduce abundance and species richness of coral reef fish recruits via non-selective predation



Predators have important effects on coral reef fish populations, but their effects on community structure have only recently been investigated and are not yet well understood. Here, the effect of predation on the diversity and abundance of young coral reef fishes was experimentally examined in Moorea, French Polynesia. Effects of predators were quantified by monitoring recruitment of fishes onto standardized patch reefs in predator-exclosure cages or uncaged reefs. At the end of the 54-day experiment, recruits were 74% less abundant on reefs exposed to predators than on caged ones, and species richness was 42% lower on reefs exposed to predators. Effects of predators varied somewhat among families, however, rarefaction analysis indicated that predators foraged non-selectively among species. These results indicate that predation can alter diversity of reef fish communities by indiscriminately reducing the abundance of fishes soon after settlement, thereby reducing the number of species present on reefs.


Coral reef fish Moorea Predation Recruitment Species diversity 


  1. Almany GR (2003) Priority effects in coral reef fish communities. Ecology 84:1920–1935CrossRefGoogle Scholar
  2. Almany GR (2004) Differential effects of habitat complexity, predators and competitors on abundance of juvenile and adult coral reef fishes. Oecologia 141:105–113CrossRefPubMedGoogle Scholar
  3. Almany GR, Webster MS (2004) Odd species out as predators reduce diversity of coral-reef fishes. Ecology 85:2933–2937CrossRefGoogle Scholar
  4. Almany GR, Webster MS (2006) The predation gauntlet: early post-settlement mortality in reef fishes. Coral Reefs 25:19–22CrossRefGoogle Scholar
  5. Almany GR, Peacock LF, Syms C, McCormick MI, Jones GP (2007) Predators target rare prey in coral reef fish assemblages. Oecologia 152:751–761CrossRefPubMedGoogle Scholar
  6. Beets JP (1997) Effects of a predatory fish on the recruitment and abundance of Caribbean coral reef fishes. Mar Ecol Prog Ser 148:11–21CrossRefGoogle Scholar
  7. Caley MJ (1993) Predation, recruitment and the dynamics of communities of coral-reef fishes. Mar Biol 117:33–43CrossRefGoogle Scholar
  8. Carr MH, Hixon MA (1995) Predation effects on early post-settlement survivorship of coral-reef fishes. Mar Ecol Prog Ser 124:31–42CrossRefGoogle Scholar
  9. Colwell RK (2006) EstimateS: Statistical estimation of species richness and shared species from samples. Version 8.
  10. Connell SD (1998) Effects of predators on growth, mortality and abundance of juvenile reef-fish: evidence from manipulations of predator and prey abundance. Mar Ecol Prog Ser 169:251–261CrossRefGoogle Scholar
  11. Connell SD (2000) Is there safety-in-numbers for prey? Oikos 88:527–532CrossRefGoogle Scholar
  12. Frederick JL (1997) Post-settlement movement of coral reef fishes and bias in survival estimates. Mar Ecol Prog Ser 150:65–74CrossRefGoogle Scholar
  13. Galzin R, Pontier P (1985) Moorea Island, Society Archipelago. Proc 5th Int Coral Reef Symp 1:73–101Google Scholar
  14. Gotelli NJ, Colwell RK (2001) Quantifying biodiversity: procedures and pitfalls in the measurement and comparison of species richness. Ecol Lett 4:379–391CrossRefGoogle Scholar
  15. Hixon MA, Beets JP (1993) Predation, prey refuges and the structure of coral-reef assemblages. Ecol Monogr 63:77–101CrossRefGoogle Scholar
  16. Hixon MA, Jones GP (2005) Competition, predation, and density-dependent mortality in demersal marine fishes. Ecology 86:2847–2859CrossRefGoogle Scholar
  17. Hixon MA, Webster MS (2002) Density dependence in reef fish populations. In: Sale PF (ed) Coral reef fishes: dynamics and diversity in a complex ecosystem. Academic Press, San Diego, pp 303–325Google Scholar
  18. Holbrook SJ, Schmitt RJ (2002) Competition for shelter space causes density-dependent predation mortality in damselfishes. Ecology 83:2855–2868CrossRefGoogle Scholar
  19. Jones GP (1991) Post-recruitment processes in the ecology of coral reef fish populations: a multifactorial perspective. In: Sale PF (ed) The ecology of fishes on coral reefs. Academic Press, San Diego, pp 294–330Google Scholar
  20. Planes S, Levefre A, Legendre P, Galzin R (1993) Spatio-temporal variability in fish recruitment to a coral reef (Moorea, French Polynesia). Coral Reefs 12:105–113CrossRefGoogle Scholar
  21. R Development Core Team (2009) R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna.
  22. Schmitt RJ, Holbrook SJ, Osenberg CW (1999) Quantifying the effects of multiple processes on local abundance: a cohort approach for open populations. Ecol Lett 2:294–303CrossRefGoogle Scholar
  23. Shima JS (1999) Variability in relative importance of determinants of reef fish recruitment. Ecol Lett 2:304–310CrossRefGoogle Scholar
  24. Stallings CD (2008) Indirect effects of an exploited predator on recruitment of coral-reef fishes. Ecology 89:2090–2095CrossRefPubMedGoogle Scholar
  25. Steele MA (1996) Effects of predators on reef fishes: separating cage artifacts from effects of predation. J Exp Mar Biol Ecol 198:249–267CrossRefGoogle Scholar
  26. Steele MA (1997) The relative importance of processes affecting recruitment of two temperate reef fishes. Ecology 78:129–145CrossRefGoogle Scholar
  27. Steele MA, Forrester GE (2002) Early post-settlement predation on three reef fishes: effects on spatial patterns of recruitment. Ecology 83:1076–1091CrossRefGoogle Scholar
  28. Webster MS (2002) Role of predators in the early post-settlement demography of coral-reef fishes. Oecologia 131:52–60CrossRefGoogle Scholar
  29. Webster MS, Almany GR (2002) Positive indirect effects in a coral reef fish community. Ecol Lett 5:549–557CrossRefGoogle Scholar

Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  1. 1.Marine Science CenterNortheastern UniversityNahantUSA
  2. 2.Department of BiologyUniversity of FloridaGainesvilleUSA
  3. 3.Department of BiologyCalifornia State UniversityNorthridgeUSA

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