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

Environmental Monitoring and Assessment
By:  and 

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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 μg/g, wet weight). An additional decline of 46% took place between 1990 and 2002 (8.5 to 4.6 μg/g). Between 1977–1978 and 1990 p,p -DDE decreased 66% (from 6.5 to 2.2 μg/g), and from 1990 to 2002 an additional decline of 36% took place (from 2.2 to 1.4 μg/g). Between 1977–1978 and 1990 dieldrin decreased only 16% (from 0.82 to 0.69 μg/g), but from 1990 to 2002 a 96% decrease occurred (from 0.69 to 0.03 μg/g).

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
Publisher Springer
Contributing office(s) Toxic Substances Hydrology Program
Description 6 p.
First page 163
Last page 168
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