Impact of Herbivore Identity on Algal Succession and Coral Growth on a Caribbean Reef

dc.contributor.author Burkepile, Deron E. en_US
dc.contributor.author Hay, Mark E. en_US
dc.contributor.corporatename Georgia Institute of Technology. School of Biology en_US
dc.contributor.corporatename Florida International University. Marine Sciences Program en_US
dc.date.accessioned 2010-06-17T18:50:56Z
dc.date.available 2010-06-17T18:50:56Z
dc.date.issued 2010-01-29
dc.description © 2010 Burkepile, Hay. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. en_US
dc.description DOI: 10.1371/journal.pone.0008963
dc.description.abstract Herbivory is an important top-down force on coral reefs that regulates macroalgal abundance, mediates competitive interactions between macroalgae and corals, and provides resilience following disturbances such as hurricanes and coral bleaching. However, reductions in herbivore diversity and abundance via disease or over-fishing may harm corals directly and may indirectly increase coral susceptibility to other disturbances. Methodology and Principal Findings In two experiments over two years, we enclosed equivalent densities and masses of either single-species or mixed-species of herbivorous fishes in replicate, 4 m2 cages at a depth of 17 m on a reef in the Florida Keys, USA to evaluate the effects of herbivore identity and species richness on colonization and development of macroalgal communities and the cascading effects of algae on coral growth. In Year 1, we used the redband parrotfish (Sparisoma aurofrenatum) and the ocean surgeonfish (Acanthurus bahianus); in Year 2, we used the redband parrotfish and the princess parrotfish (Scarus taeniopterus). On new substrates, rapid grazing by ocean surgeonfish and princess parrotfish kept communities in an early successional stage dominated by short, filamentous algae and crustose coralline algae that did not suppress coral growth. In contrast, feeding by redband parrotfish allowed an accumulation of tall filaments and later successional macroalgae that suppressed coral growth. These patterns contrast with patterns from established communities not undergoing primary succession; on established substrates redband parrotfish significantly reduced upright macroalgal cover while ocean surgeonfish and princess parrotfish allowed significant increases in late successional macroalgae. Significance This study further highlights the importance of biodiversity in affecting ecosystem function in that different species of herbivorous fishes had very different impacts on reef communities depending on the developmental stage of the community. The species-specific effects of herbivorous fishes suggest that a species-rich herbivore fauna can be critical in providing the resilience that reefs need for recovery from common disturbances such as coral bleaching and storm damage. en_US
dc.identifier.citation Deron E. Burkepile and Mark E. Hay, "Impact of Herbivore Identity on Algal Succession and Coral Growth on a Caribbean Reef," PLoS ONE 5(1): e8963 en_US
dc.identifier.doi 10.1371/journal.pone.0008963
dc.identifier.issn 1932-6203
dc.identifier.uri http://hdl.handle.net/1853/34017
dc.language.iso en_US en_US
dc.publisher Georgia Institute of Technology en_US
dc.publisher.original Public Library of Science
dc.subject Herbivory en_US
dc.subject Coral reefs en_US
dc.subject Coral recovery en_US
dc.subject Biodiversity en_US
dc.subject Coral bleaching en_US
dc.subject Storm damage en_US
dc.title Impact of Herbivore Identity on Algal Succession and Coral Growth on a Caribbean Reef en_US
dc.type Text
dc.type.genre Article
dspace.entity.type Publication
local.contributor.author Hay, Mark E.
local.contributor.corporatename College of Sciences
local.contributor.corporatename School of Biological Sciences
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