Further declines in organochlorines in eggs of red-breasted mergansers from Lake Michigan, 1977-1978 versus 1990 versus 2002
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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).
| 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 |
| Google Analytic Metrics | Metrics page |