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Marine mammals from northeast atlantic: relationship between their trophic status as determined by d13C and d15N measurements and their trace metal concentrations
Das, K.; Beans, C.; Holsbeek, L.; Mauger, G.; Berrow, S.D.; Rogan, E.; Bouquegneau, J.M. (2003). Marine mammals from northeast atlantic: relationship between their trophic status as determined by d13C and d15N measurements and their trace metal concentrations. Mar. Environ. Res. 56(3): 349-365. dx.doi.org/10.1016/S0141-1136(02)00308-2
In: Marine Environmental Research. Applied Science Publishers: Barking. ISSN 0141-1136; e-ISSN 1879-0291
Peer reviewed article  

Available in  Authors 

Keywords
    Mammalia [WoRMS]
    Marine/Coastal
Author keywords
    marine mammals; stable isotopes; heavy metals; trophic transfer;

Authors  Top 
  • Das, K.
  • Beans, C.
  • Holsbeek, L.
  • Mauger, G.
  • Berrow, S.D.
  • Rogan, E.
  • Bouquegneau, J.M.

Abstract
    The relationship between trophic position through d13C and d15N and trace metal concentrations (Zn, Cd, Cu and Hg) was investigated in the tissues of six marine mammal species from the Northeast Atlantic: striped dolphin Stenella coeruleoalba, common dolphin, Delphinus Delphis, Atlantic white-sided dolphin Lagenorhynchus acutus, harbour porpoise Phocoena phocoena, white beaked-dolphin Lagenorhynchus albirostris, grey seal Halichoerus grypus stranded on French Channel and Irish coasts. White-beaked dolphins, harbour porpoises, white-sided dolphins, common and striped dolphins display the same relative and decreasing trophic position, as measured by d15N values, along both the Irish and French channel coasts, reflecting conservative trophic habits between these two places. Hepatic and renal Cd concentrations were significantly correlated to muscle d13C and d15N values while Hg, Zn and Cu did not. These results suggest that Cd accumulation is partly linked to the diet while other factors such as age or body condition might explain Hg, Zn or Cu variability in marine mammals. Combined stable isotope and trace metal analyses appear to be useful tools for the study of marine mammal ecology.

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