Use of stable isotope to delineate amphipod trophic status in Antarctic food webs


Contact
tbrey [ at ] awi-bremerhaven.de

Abstract

Within the Southern Ocean, amphipods have achieved a conspicuous ecological radiation which gave rise to the development of numerous feeding strategies. The aim of this study is to apply the carbon and nitrogen stable isotope ratio methodology to delineate the trophic relationships involving benthic amphipods in the eastern Weddell Sea food webs. The interest of the isotope technique relies upon the direct relationship between the carbon ( super(13)C/ super(12)C) and nitrogen ( super(15)N/ super(14)N) stable isotope ratios of the animal tissues and its diet. Our results demonstrate the efficiency of the isotope ratio method to distinguish species displaying different feeding strategies. The large range (from -28 to -19.5ppt for carbon and from 5.8 to 12.9ppt for nitrogen) of isotopic ratios attests the wide spectrum



Item Type
Conference (Conference paper)
Authors
Divisions
Programs
Publication Status
Published
Event Details
Polskie Archiwum Hydrobiologii (Polish Archives for Hydrobiology).
Eprint ID
10126
Cite as
Nyssen, F. , Brey, T. , Lepoint, G. , De Broyer, C. , Bouquegneau, J. M. and Dauby, P. (2001): Use of stable isotope to delineate amphipod trophic status in Antarctic food webs , Polskie Archiwum Hydrobiologii (Polish Archives for Hydrobiology) .


Share
Add to AnyAdd to TwitterAdd to FacebookAdd to LinkedinAdd to PinterestAdd to Email

Research Platforms
N/A

Campaigns
N/A


Actions
Edit Item Edit Item