D. S. Miller
B.J. Ebert
K. L. Stromborg
G. H. Heinz
1994
<p><span>From 1977–1978 to 1990, concentrations of polychlorinated biphenyls (PCBs) and most organochlorine pesticides declined in eggs of red-breasted mergansers (</span><i>Mergus serrator</i><span>) nesting on islands in northwestern Lake Michigan. Total PCBs decreased 60% (from 21 ppm in 1977–1978 to 8.5 ppm in 1990) and </span><i>p,p</i><span>′-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.</span></p>
application/pdf
10.1007/BF00547060
en
Springer
Declines in organochlorines in eggs of red-breasted mergansers from Lake Michigan, 1977-78 versus 1990
article