Biometrics, fatty acid composition and stable isotopic ratios of five seabird species from Kongsfjorden, Svalbard ...

Marine birds are important predators in the marine ecosystem, and dietary studies can give useful information about their feeding ecology, food webs and oceanographic variability. The aim of this study was to increase our understanding of the diet and trophic level of the seabirds breeding in Kongsf...

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Bibliographic Details
Main Authors: Wold, Anette, Jæger, Iris, Hop, Haakon, Gabrielsen, Geir W, Falk-Petersen, Stig
Format: Article in Journal/Newspaper
Language:English
Published: PANGAEA 2011
Subjects:
Biological sample
International Polar Year 2007-2008 IPY
Alle alle
Black-legged Kittiwake
brünnich's guillemot
Fulmarus glacialis
Glaucous Gull
International Polar Year
IPY
Kongsfjord*
Kongsfjorden
Larus hyperboreus
little auk
Northern Fulmar
rissa tridactyla
Svalbard
Uria lomvia
uria
Online Access:https://dx.doi.org/10.1594/pangaea.818002
https://doi.pangaea.de/10.1594/PANGAEA.818002
Description
Summary:Marine birds are important predators in the marine ecosystem, and dietary studies can give useful information about their feeding ecology, food webs and oceanographic variability. The aim of this study was to increase our understanding of the diet and trophic level of the seabirds breeding in Kongsfjorden, Svalbard. We have used fatty acids and stable isotopes, both of which integrate diet information over space and time, to determine trophic relationships in marine food webs. Fatty acid compositions of muscle from Little auk (Alle alle), Brünnich's guillemot (Uria lomvia), Black-legged kittiwake (Rissa tridactyla), Northern fulmar (Fulmarus glacialis) and Glaucous gull (Larus hyperboreus) were determined and compared with their prey species. Canonical analysis (CA) showed that fatty acid composition differed among the five seabird species. Little auk, Black-legged kittiwake and Northern fulmar had high levels of the Calanus markers 20:1n9 and 22:1, indicating that these seabirds are a part of the Calanus ... : Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150 ...

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