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Estimated ages of some large giant sequoias: General Sherman keeps getting younger

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Abstract

During 1975-77, 168 bald eagles (Haliaeetus leucocephalus) found moribund or dead in 29 states were analyzed for organochlorine pesticides and polychlorinated biphenyls (PCBs); 32 specimens from 13 states were analyzed for polybrominated biphenyls (PBBs). PCBs were present in 166 bald eagle carcasses and DDE was found in 165. TDE and dieldrin were identified in 137 samples, trans-nonachlor in 118, and oxychlordane in 90. Brains of five eagles contained possible lethal levels of dieldrin, and two eagles possibly died of endrin poisoning. Nine eagle livers, analyzed because of suspected lead poisoning, contained high levels of lead. Twenty percent of the eagles died from shooting, the most common cause of death; this cause of death, however, has declined.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Estimated ages of some large giant sequoias: General Sherman keeps getting younger
Volume
47
Year Published:
2000
Language:
English
Contributing office(s):
Western Ecological Research Center
Description:
p. 61-67
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
61
Last page:
67
Number of Pages:
7