期刊
MARINE POLLUTION BULLETIN
卷 124, 期 1, 页码 252-257出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2017.07.050
关键词
Liver; Marine bird; Somateria mollissima; Contaminant; Eider duck
资金
- Natural Resources Canada (Polar Continental Shelf Program)
- Nasivvik Centre Undergraduate Student Award
- Natural Sciences and Engineering Research Council of Canada [418551-2012, 424234-2012]
- Environment Canada
We examined hepatic concentrations of arsenic (As), cadmium (Cd), copper (Cu), lead (Pb), manganese (Mn), mercury (Hg), rubidium (Rb), selenium (Se) and zinc (Zn) in 10 breeding female common eiders (Somateria mollissima) from each of three colonies across 20 degrees of latitude. Levels of many elements were elevated in eiders, although generally below levels of toxicological concern. We found significant differences in concentrations of As, Rb, Hg, Mn and Se among colonies, but not in a consistent pattern with latitude, and Hg:Se molar ratios did not vary among colonies. Furthermore, overlap in element concentrations from birds at different colonies meant that we could not reliably differentiate birds from different colonies based on a suite of their hepatic trace element concentrations. We encourage other researchers to assess baseline trace element levels on this important, harvested species, as a means of tracking contamination of nearshore benthic environments in the circumpolar Arctic.
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