Declines in organochlorines in eggs of red-breasted mergansers from Lake Michigan, 1977-78 versus 1990
Environmental Monitoring and Assessment
By: G. H. Heinz, D. S. Miller, B.J. Ebert, and K. L. Stromborg
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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. Total PCBs decreased 60% (from 21 ppm in 1977–1978 to 8.5 ppm in 1990) and p,p′-DDE decreased 66% (from 6.5 to 2.2 ppm). Dieldrin decreased only 16% (from 0.82 to 0.69 ppm). In 1990, 79.1% of incubated eggs hatched, which was not significantly different from the 83.5% that hatched in 1977–1978.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Declines in organochlorines in eggs of red-breasted mergansers from Lake Michigan, 1977-78 versus 1990 |
| Series title | Environmental Monitoring and Assessment |
| DOI | 10.1007/BF00547060 |
| Volume | 33 |
| Issue | 3 |
| Year Published | 1994 |
| Language | English |
| Publisher | Springer |
| Contributing office(s) | Patuxent Wildlife Research Center |
| Description | 8 p. |
| First page | 175 |
| Last page | 182 |