Carbon and nitrogen stable isotopic inventory of the most abundant demersal fish captured by benthic gears in southwestern Iceland (North Atlantic)

Gianluca Sarà*, Maurizio De Pirro, Mario Sprovieri, Paola Rumolo, Halldór Pálmar Halldórsson, Jörundur Svavarsson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Stable isotopes (δ13C and δ15N) were used to examine the origin of organic matter for the most representative demersal species of the SW Icelandic fishery, accounting for over 70% of landings of those species in the North Atlantic. Samples were collected during a 2-week period in early September 2004 from landings and directly during fishing cruises. Stable isotopes showed that particulate organic matter and sedimentary organic matter were at the base of the food web and appeared to fill two different compartments: the pelagic and the benthic. The pelagic realm was composed of only capelin and sandeel; krill and redfish occupied an intermediate position between pelagic and benthic realms; while anglerfish, haddock, cod and ling resulted as the true demersal species while tusk, rays and plaice were strongly linked to the benthic habitat.

Original languageEnglish
Pages (from-to)309-315
Number of pages7
JournalHelgoland Marine Research
Volume63
Issue number4
DOIs
Publication statusPublished - 2009

Bibliographical note

Funding Information:
Acknowledgments Authors are very grateful to Mr. Guðmundur Víðir Helgason for arrangements, help and hospitality during their stay at the Sandgerdi Marine Centre (SMC), Iceland, and for making available the invertebrate collections from the international BIOICE project (Benthic Invertebrates of Icelandic waters). Thanks are also to the director of the Nature Centre Mr. Reynir Sveinsson, the director of the Sandgerdi Wsh market (Fiskmarkaður Suðurnesja), Mr. Ragnar Kristjánsson, the crew of Wshing the vessel ‘Askur’ and all the staV at the SMC for their kindness and help. The stay at the SMC was supported by the programme ‘‘Improving Human Potential: Access to Research Infrastructure’’ (IHP/ARI) provided by the European Community.

Other keywords

  • Demersal fish
  • Food web
  • Iceland
  • North Atlantic
  • Stable isotope

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