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- W1963808624 abstract "MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections MEPS 301:129-134 (2005) - doi:10.3354/meps301129 Radiocarbon evidence for annual growth rings in the deep-sea octocoral Primnoa resedaeformis Owen A. Sherwood1,*, David B. Scott1, Michael J. Risk2, Thomas P. Guilderson3,4 1Centre for Environmental and Marine Geology, Dalhousie University, Halifax, Nova Scotia B3H 4J1, Canada2School of Geography and Geology, McMaster University, Hamilton, Ontario L8S 4M1, Canada3Center for Accelerator Mass Spectrometry, Lawrence Livermore National Laboratory, Livermore, California 94551, USA4Department of Ocean Sciences & Institute of Marine Sciences, University of California Santa Cruz, Santa Cruz, California 95064, USA *Email: osherwoo@dal.ca ABSTRACT: The deep-sea gorgonian octocoral Primnoa resedaeformis is distributed throughout the Atlantic and Pacific Oceans at depths of 65 to 3200 m. It has a 2-part skeleton of calcite and gorgonin. Towards the inside of the axial skeleton gorgonin and calcite are deposited in concentric growth rings, similar to tree rings. Colonies were collected from the NE Channel (NW Atlantic Ocean, southwest of Nova Scotia, Canada) from depths of 250 to 475 m. Radiocarbon was measured in individual rings isolated from sections of each colony, after dissolution of calcite. Each Δ14C measurement was paired with a ring age determined by 3 amateur ring counters. The precision of ring counts averaged better than ±2 yr. Accurate reconstruction of 20th century bomb-radiocarbon showed that (1) the growth rings are formed annually, (2) the gorgonin is derived from surface particulate organic matter (POM) and (3) useful environmental data are recorded in the organic endoskeletons of deep-sea octocorals. These results support the use of P. resedaeformis as a long-term, high resolution monitor of ocean surface conditions, particularly in temperate and boreal environments where proxy data are lacking. KEY WORDS: Primnoa · Deep-sea coral · Octocoral · Growth rings · Gorgonin · Bomb radiocarbon Full text in pdf format PreviousNextExport citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 301. Online publication date: October 11, 2005 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2005 Inter-Research." @default.
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- W1963808624 title "Radiocarbon evidence for annual growth rings in the deep-sea octocoral Primnoa resedaeformis" @default.
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