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...

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Bibliographic Details
Main Authors: Kiriakoulakis, Kostas, Fisher, Elizabeth, Wolff, George A, Freiwald, André, Grehan, Anthony J, Roberts, J Murray
Format: Article in Journal/Newspaper
Language:English
Published: PANGAEA 2005
Subjects:
Cork Harbour
Limfjorden
Scheldt Delta Estuary
Remote operated vehicle
Stand-alone pumps
Trawl net
Box corer
Dredge, triangle
Television-Grab
Scraper trawl
D248
POS265
POS292
Discovery 1962
Poseidon
Atlantic Coral Ecosystem Study ACES
Environmental controls on mound formation along the european margin ECOMOUND
Lophelia pertusa
North East Atlantic
Online Access:https://dx.doi.org/10.1594/pangaea.738279
https://doi.pangaea.de/10.1594/PANGAEA.738279
Description
Summary: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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