Benthic foraminifera: their importance to future reef island resilience

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dc.contributor.authorDawson, JLen_AU
dc.contributor.authorHua, Qen_AU
dc.contributor.authorSmithers, SGen_AU
dc.date.accessioned2020-05-25T07:22:09Zen_AU
dc.date.available2020-05-25T07:22:09Zen_AU
dc.date.issued2012-07-19en_AU
dc.date.statistics2020-05-25en_AU
dc.description.abstractThe provenance, age and redistribution of sediments across Raine Reef (11°35’28”S 144°02’17”E), northern Great Barrier Reef (GBR) are described. Sediments of both the reef flat and sand cay beaches are composed predominantly of benthic foraminifera (35.2% and 41.5% respectively), which is a common occurrence throughout the Pacific region. The major contemporary sediment supply to the island was identified as Baculogypsina sphaerulata, a relatively large (1-2 mm exclusive of spines) benthic foraminifera living on the turf algae close to the reef periphery, and responsible for beach sand nourishment. Radiometric ages of foraminiferal tests of ranging taphonomic preservation (pristine to severely abraded) included in surficial sediments collected across the reef flat were remarkably young (typically <60 years). Results indicate rapid transport and/or breakdown of sand with a minimal storage time on the reef (likely <102 years), inferring a tight temporal link between the reef island and sediment production on the surrounding reef. This study demonstrates the critical need for further research on the precise residence times of the major reef sediment components and transport pathways, which are fundamental to predicting future island resilience. © Copyright belongs to the authors.en_AU
dc.identifier.citationDawson, J. L., Hua, Q., & Smithers, S. (2012). Benthic foraminifera: their importance to future reef island resilience. Presentation to the 12th International Coral Reef Symposium, Cairns, QLD, Australia., 9-13 July, 2012. Abstract retrieved from http://www.icrs2012.com/proceedings/manuscripts/ICRS2012_1A_1.pdfen_AU
dc.identifier.conferenceenddate13 July 2012en_AU
dc.identifier.conferencename12th International Coral Reef Symposiumen_AU
dc.identifier.conferenceplaceCairns, Australiaen_AU
dc.identifier.conferencestartdate9 July 2012en_AU
dc.identifier.govdoc9555en_AU
dc.identifier.isbn978-0-9808572-5-2en_AU
dc.identifier.urihttp://www.icrs2012.com/proceedings/manuscripts/ICRS2012_1A_1.pdfen_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/9482en_AU
dc.language.isoenen_AU
dc.publisherInternational Coral Reef Societyen_AU
dc.subjectCoral reefsen_AU
dc.subjectForaminiferaen_AU
dc.subjectClimatic changeen_AU
dc.subjectSedimentsen_AU
dc.subjectAustraliaen_AU
dc.subjectPacific Oceanen_AU
dc.titleBenthic foraminifera: their importance to future reef island resilienceen_AU
dc.typeConference Abstracten_AU
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