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Feasibility of age determination of deep-water bamboo corals (Gorgonacea; Isididae) from annual cycles in skeletal composition

Thresher, Robert E.; MacRae, Colin M.; Wilson, Nick C.; Fallon, Stewart


We test two hypotheses, that annual environmental cycles produce periodic variability in the skeletal composition of deep-water gorgonians, and that these cycles can be counted to determine the coral's age. Annual periodicity of deposition was tested by comparing the internode composition of bamboo corals live-collected 10 years apart in the Southern Ocean. The validity of the comparison was substantiated by growth rates for the 10-year interval (77-121 μm/yr) that were confirmed by radiocarbon...[Show more]

CollectionsANU Research Publications
Date published: 2009
Type: Journal article
Source: Deep-Sea Research Part 1. Oceanographic Research Papers
DOI: 10.1016/j.dsr.2008.10.003


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