Coral Reef Resilience and Herbivorous Fish Response
Author Information
Author(s): Adam Thomas C., Russell J. Schmitt, Sally J. Holbrook, Andrew J. Brooks, Peter J. Edmunds, Robert C. Carpenter, Giacomo Bernardi
Primary Institution: University of California Santa Barbara
Hypothesis
What processes allow coral reefs to return to coral dominance after disturbances?
Conclusion
Herbivorous fish populations increased rapidly after coral loss, preventing macroalgae establishment and supporting reef resilience.
Supporting Evidence
- Herbivorous fish populations nearly doubled in density and tripled in biomass between 2008 and 2010.
- Coral cover on the forereef returned to near-record highs by 2006 after previous disturbances.
- Parrotfish became the dominant herbivores, increasing from 22% to 50% of the herbivore biomass on the forereef.
Takeaway
When coral reefs lose their coral, fish that eat algae help keep the reefs healthy by stopping algae from taking over.
Methodology
Time-series data collection, behavioral observations, and a field experiment were conducted to assess herbivore dynamics and coral recovery.
Limitations
The study is limited to specific sites in Moorea and may not be generalizable to all coral reef ecosystems.
Statistical Information
P-Value
p<0.0001
Confidence Interval
95% CI
Statistical Significance
p<0.0001
Digital Object Identifier (DOI)
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