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dc.contributor Australian Institute Of Marine Science
dc.contributor Australian Inst Marine Sci
dc.contributor Australian Institute Of Marine Science (aims) en DE'ATH, G. FABRICIUS, K. E. 2017-03-21T01:24:46Z 2013-02-28T06:51:52Z 2013-02-28T06:51:52Z 2019-05-09T01:05:24Z 2017-03-21T01:24:46Z 2013-02-28T06:51:52Z 2013-02-28T06:51:52Z 2019-05-09T01:05:24Z 2008-11-01
dc.identifier 7753 en
dc.identifier.citation Fabricius KE and De'ath AG (2008) Photosynthetic symbionts and energy supply determine octocoral biodiversity in coral reefs. Ecology. 89: 3163 3173. en
dc.identifier.issn 0012-9658
dc.description Link to abstract/full text - en
dc.description.abstract Many coral reef organisms live in symbiotic relationships with photosynthetic microalgae. This symbiosis extends the energy resources available to reef organisms, thereby potentially influencing biodiversity. In octocorals, about one-half of the taxa contain photosynthetic symbionts while the rest do not, and thus octocorals are an ideal model to assess the relationships between biodiversity, spatial and environmental factors, and photosynthetic symbionts. Data collected from 1106 sites on the Great Barrier Reef, Australia, between 12 degrees and 24 degrees S showed that taxa with photosynthetic symbionts (phototrophs) had higher abundances, wider ranges, and a wider spread of locations than taxa without symbionts (heterotrophs). In phototrophic assemblages, spatial turnover comprised both exchange and loss of taxa, and their richness was high across a broad range of environmental conditions. In contrast, heterotrophs were uncommon, had short ranges, and were located where energy supply was highest and disturbance lowest. Turnover between heterotrophic assemblages comprised taxonomic loss rather than exchange of taxa. The biodiversity patterns and differences between phototrophic and heterotrophic octocorals are similar to those recorded in more spatially limited studies of phototrophic sponges and hard corals, and heterotrophic sponges. This study therefore suggests that the association, or not, with photosynthetic symbionts, and spatial and environmental factors related to energy supply and disturbance are principal drivers of biodiversity, community composition, and ranges of coral reef benthos.
dc.description.sponsorship We are very grateful to P. Alderslade for sharing his knowledge on octocoral taxonomy, for help with the identification of some of the samples, and for numerous discussions about octocorals. We also thank M. J. Caley, E. Edinger, and an anonymous reviewer for their comments, which helped in improving the manuscript. The research was funded by the Australian Institute of Marine Science, the Cooperative Research Centre of the Great Barrier Reef World Heritage Area, and the Australian Government's Marine and Tropical Sciences Research Facility.
dc.description.uri en
dc.language English
dc.language en en
dc.relation.ispartof Null
dc.relation.ispartof Ecology - pages: 89: 3163 3173 en
dc.relation.uri en
dc.subject Great-barrier-reef
dc.subject Species Richness
dc.subject Ecology
dc.subject Diversity
dc.subject Latitudinal Gradients
dc.subject Coral Reef
dc.subject Environmental Sciences & Ecology
dc.subject Endosymbiont
dc.subject Patterns
dc.subject Latitude
dc.subject Energy Supply
dc.subject Multivariate Regression Trees
dc.subject Assemblages
dc.subject Spatial Scales
dc.subject Communities
dc.subject Zooxanthellae
dc.subject Octocorallia
dc.subject Soft Coral
dc.subject Soft Corals
dc.subject Boosted Trees
dc.subject Range Size
dc.subject Diversity Gradients
dc.type journal article en
dc.identifier.doi 10.1890/08-0005.1 en
dc.identifier.wos WOS:000261053500020

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