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Further declines in organochlorines in eggs of red-breasted mergansers from Lake Michigan, 1977-1978 versus 1990 versus 2002

Environmental Monitoring and Assessment

By:
,
DOI: 10.1007/s10661-008-0619-5

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Abstract

From 1977-1978 to 1990, concentrations of polychlorinated biphenyls (PCBs) and most organochlorine pesticides declined in eggs of red-breasted mergansers (Mergus serrator) nesting on islands in northwestern Lake Michigan. Further declines took place between 1990 and 2002. Between 1977-1978 and 1990 total PCBs decreased 60% (from 21 to 8.5 ??g/g, wet weight). An additional decline of 46% took place between 1990 and 2002 (8.5 to 4.6 ??g/g). Between 1977-1978 and 1990 p,p ???-DDE decreased 66% (from 6.5 to 2.2 ??g/g), and from 1990 to 2002 an additional decline of 36% took place (from 2.2 to 1.4 ??g/g). Between 1977-1978 and 1990 dieldrin decreased only 16% (from 0.82 to 0.69 ??g/g), but from 1990 to 2002 a 96% decrease occurred (from 0.69 to 0.03 ??g/g). ?? 2008 Springer Science+Business Media B.V.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Further declines in organochlorines in eggs of red-breasted mergansers from Lake Michigan, 1977-1978 versus 1990 versus 2002
Series title:
Environmental Monitoring and Assessment
DOI:
10.1007/s10661-008-0619-5
Volume
159
Issue:
1-4
Year Published:
2009
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
163
Last page:
168
Number of Pages:
6