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The Status of the Macroinvertebrate Community in the St. Croix River, MN and WI: an examination of ecological health using techniques of multivariate analysis

Aquatic Ecosystem Health and Management

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Abstract

Ten organochlorine compounds were identified in pools of black duck (Anas rubripes) and mallard (A. platyrhynchos) wings from the 1981-82 hunting season. Most organochlorine compounds occurred very infrequently. Among those compounds positively identified by mass spectrometry, DDE and, secondarily, PCB had the highest frequencies of occurrence. Other compounds, positively identified and occurring less frequently, included DDT, DDD, DDMU, dieldrin, heptachlor epoxide, trans-nonachlor, cis-chlordane and mirex. Compounds looked for but not positively identified include oxychlordane, cis-nonachlor, endrin, hexachlorobenzene and toxaphene. PCB levels in black duck wings declined between the 1979-80 and 1981-82 collections. PCB levels in black duck wings from the northern region of the Atlantic Flyway were higher than those in wings from the southern region. Mean DDE residues in mallard wings declined between collections and differed among flyways and regions. PCB levels in mallard wings differed only among flyways and regions.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
The Status of the Macroinvertebrate Community in the St. Croix River, MN and WI: an examination of ecological health using techniques of multivariate analysis
Series title:
Aquatic Ecosystem Health and Management
Volume
4
Year Published:
2001
Language:
English
Description:
p. 311-325
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Aquatic Ecosystem Health and Management
First page:
311
Last page:
325
Number of Pages:
15