Document Detail


Regional, temporal, and species patterns of mercury in Alaskan seabird eggs: Mercury sources and cycling or food web effects?
MedLine Citation:
PMID:  22522226     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Mercury concentration ([Hg]), δ(15)N, and δ(13)C values were measured in eggs from common murres (Uria aalge), thick-billed murres (U. lomvia), glaucous gulls (Larus hyperboreus), and glaucous-winged gulls (L. glaucescens) collected in Alaska from 1999 to 2005. [Hg] was normalized to a common trophic level using egg δ(15)N values and published Hg trophic magnification factors. Egg [Hg] was higher in murres from Gulf of Alaska, Cook Inlet, and Norton Sound regions compared to Bering Sea and Bering Strait regions, independent of trophic level. We believe the Yukon River outflow and terrestrial Hg sources on the southern Seward Peninsula are responsible for the elevated [Hg] in Norton Sound eggs. Normalizing for trophic level generally diminished or eliminated differences in [Hg] among taxa, but temporal variability was unrelated to trophic level. Normalizing murre egg [Hg] by trophic level improves the confidence in regional comparisons of Hg sources and biogeochemical cycling in Alaska.
Authors:
Rusty D Day; David G Roseneau; Stacy S Vander Pol; Keith A Hobson; Olivier F X Donard; Rebecca S Pugh; Amanda J Moors; Paul R Becker
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-4-19
Journal Detail:
Title:  Environmental pollution (Barking, Essex : 1987)     Volume:  166C     ISSN:  1873-6424     ISO Abbreviation:  -     Publication Date:  2012 Apr 
Date Detail:
Created Date:  2012-4-23     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8804476     Medline TA:  Environ Pollut     Country:  -    
Other Details:
Languages:  ENG     Pagination:  226-232     Citation Subset:  -    
Copyright Information:
Published by Elsevier Ltd.
Affiliation:
National Institute of Standards and Technology, Analytical Chemistry Division, Hollings Marine Laboratory, 331 Fort Johnson Road, Charleston, SC 29412, USA; Institut Pluridisciplinaire de Recherche sur l'Environnement et les Materiaux, Equipe de Chimie Analytique BioInorganique et Environnement, Universite de Pau et des Pays de l'Adour, CNRS UMR 5254, Helioparc, 64053 Pau, France.
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