Lipids and nitrogen isotopes of deep-water corals


The lipid and organic nitrogen isotopic (delta15N) compositions of two common deep-water corals (Lophelia pertusa and Madrepora oculata) collected from selected locations of the NE Atlantic are compared to the composition of suspended particulate organic matter, in order to determine their principle food source. Initial results suggest that they may feed primarily on zooplankton. This is based on the increased abundances of mono-unsaturated fatty acids and alcohols and the different ratios of the polyunsaturated fatty acids, 22:6/20:5 of the corals when compared to those of the suspended particulate organic matter. There is enrichment in L. pertusa of mono-unsaturated fatty acids and of delta15N relative to M. oculata. It is unclear whether this reflects different feeding strategies or assimilation/storage efficiencies of zooplankton tissue or different metabolism in the two coral species.

Supplement to: Kiriakoulakis, Kostas; Fisher, Elizabeth; Wolff, George A; Freiwald, André; Grehan, Anthony J; Roberts, J Murray (2005): Lipids and nitrogen isotopes of two deep-water corals from the North-East Atlantic: initial results and implications for their nutrition. In: Freiwald, A, Roberts, JM (eds.), Cold-Water Corals and Ecosystems, Springer Berlin Heidelberg, Berlin, Heidelberg, 715-729

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Metadata Access
Creator Kiriakoulakis, Kostas ORCID logo; Fisher, Elizabeth; Wolff, George A ORCID logo; Freiwald, André; Grehan, Anthony J ORCID logo; Roberts, J Murray ORCID logo
Publisher PANGAEA
Publication Year 2005
Funding Reference Fifth Framework Programme Crossref Funder ID EVK3-CT-1999-00008 Atlantic Coral Ecosystem Study; Fifth Framework Programme Crossref Funder ID EVK3-CT-1999-00013 Environmental controls on mound formation along the european margin
Rights Creative Commons Attribution 3.0 Unported;
OpenAccess true
Resource Type Supplementary Publication Series of Datasets; Collection
Format application/zip
Size 4 datasets
Discipline Earth System Research
Spatial Coverage (-15.670W, 51.000S, 9.386E, 63.609N); North Sea; Darwin Mound; Darwin Mounds; Belgica Mounds; Norwegian shelf; Porcupine Seabight; Pelagia Mounds; Logachev Mounds; Norwegian fjord; Wyville Thomson Ridge
Temporal Coverage Begin 1998-10-01T00:00:00Z
Temporal Coverage End 2002-08-03T05:05:00Z