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Time Trends of Mercury in Feathers of West Greenland Birds of Prey During 1851-2003.

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Title: Time Trends of Mercury in Feathers of West Greenland Birds of Prey During 1851-2003.
Authors: Rune Dietz rdi@dmu.dk, Frank F. Riget1, David Boertmann1, Christian Sonne1, Morten T. Olsen1, Jon Fjeldså2, Knud Falk3, Maja Kirkegaard1, Carsten Egevang4, Gert Asmund1, Frank Wille5, S∅ren M∅ller6
Source: Environmental Science & Technology. 10/1/2006, Vol. 40 Issue 19, p5911-5916. 6p.
Subject Terms: *Mercury (Element), Feathers, Birds of prey, Gyrfalcon, Peregrine falcon, White-tailed sea eagle, Regression analysis, Multivariate analysis
Geographic Terms: Greenland
Abstract: Temporal trends of mercury (Hg) in West Greenland gyrfalcons, peregrine falcons, and white-tailed eagles were determined over 150 years from 1851 to 2003. Hg was measured in the fifth primary feather. Results showed that Hg increased in the order gyrfalcon (lowest) < peregrine falcon (intermediate) < white-tailed eagle (highest). All species showed significant age accumulations, which were taken into account in the temporal trend analysis. Of eight time trend analyses (three species and three age groups of which one was missing), seven showed an increase in primary feather concentrations. Of these, four were significant at the 5% level, two were close to being significant, and one was not significant. The linear regressions of which three out of four showed significant increases were for juvenile and immature gyrfalcon and juvenile peregrine falcon, which covered only periods prior to 1960, owing to limited data from the last half-century. The two sample comparisons of Hg 10-year medians for adult peregrine falcons and juvenile and adult white-tailed eagles indicated a continued increase during recent decades. However, low levels of Hg in a few recent collections among gyrfalcons and peregrines could indicate a change in the increasing trend. [ABSTRACT FROM AUTHOR]
Copyright of Environmental Science & Technology is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Time Trends of Mercury in Feathers of West Greenland Birds of Prey During 1851-2003.
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  Data: &lt;searchLink fieldCode=&quot;JN&quot; term=&quot;%22Environmental+Science+%26+Technology%22&quot;&gt;Environmental Science &amp; Technology&lt;/searchLink&gt;. 10/1/2006, Vol. 40 Issue 19, p5911-5916. 6p.
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  Data: *&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Mercury+%28Element%29%22&quot;&gt;Mercury (Element)&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Feathers%22&quot;&gt;Feathers&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Birds+of+prey%22&quot;&gt;Birds of prey&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Gyrfalcon%22&quot;&gt;Gyrfalcon&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Peregrine+falcon%22&quot;&gt;Peregrine falcon&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22White-tailed+sea+eagle%22&quot;&gt;White-tailed sea eagle&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Regression+analysis%22&quot;&gt;Regression analysis&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Multivariate+analysis%22&quot;&gt;Multivariate analysis&lt;/searchLink&gt;
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– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Temporal trends of mercury (Hg) in West Greenland gyrfalcons, peregrine falcons, and white-tailed eagles were determined over 150 years from 1851 to 2003. Hg was measured in the fifth primary feather. Results showed that Hg increased in the order gyrfalcon (lowest) &lt; peregrine falcon (intermediate) &lt; white-tailed eagle (highest). All species showed significant age accumulations, which were taken into account in the temporal trend analysis. Of eight time trend analyses (three species and three age groups of which one was missing), seven showed an increase in primary feather concentrations. Of these, four were significant at the 5% level, two were close to being significant, and one was not significant. The linear regressions of which three out of four showed significant increases were for juvenile and immature gyrfalcon and juvenile peregrine falcon, which covered only periods prior to 1960, owing to limited data from the last half-century. The two sample comparisons of Hg 10-year medians for adult peregrine falcons and juvenile and adult white-tailed eagles indicated a continued increase during recent decades. However, low levels of Hg in a few recent collections among gyrfalcons and peregrines could indicate a change in the increasing trend. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: &lt;i&gt;Copyright of Environmental Science &amp; Technology is the property of American Chemical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder&#39;s express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.&lt;/i&gt; (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1021/es0609856
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 6
        StartPage: 5911
    Subjects:
      – SubjectFull: Mercury (Element)
        Type: general
      – SubjectFull: Feathers
        Type: general
      – SubjectFull: Birds of prey
        Type: general
      – SubjectFull: Gyrfalcon
        Type: general
      – SubjectFull: Peregrine falcon
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      – SubjectFull: Regression analysis
        Type: general
      – SubjectFull: Multivariate analysis
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      – SubjectFull: Greenland
        Type: general
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            – D: 01
              M: 10
              Text: 10/1/2006
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              Y: 2006
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