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Decline of wildcelery buds in the lower Detroit River, 1950-85

Journal of Wildlife Management

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Abstract

American wildcelery buds (Vallisneria americana), an abundant food eaten by diving ducks (Aythini) during migrations, decreased in the lower Detroit River of the Great Lakes from 1950 to 1985. Bud densities decreased at 2 (-14 and -18 buds/mA?) of 5 locations and were similar at 3 (-2, +2, and +3 buds/mA?) of 5 locations. Net change in all 5 areas combined, however, was a decrease of 36,720,000 buds, a 72% decline. Estimated potential losses of waterfowl feeding days caused by the decreased bud densities were 147,000 for canvasbacks (Aythya valisineria), 241,000 for redhead ducks (A. americana), or 664,000 for lesser scaup (A. affinis). Thus, the decline of wildcelery in the Detroit River may have contributed to decreased use of Michigan migration routes by some waterfowl species between 1950 and 1985.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Decline of wildcelery buds in the lower Detroit River, 1950-85
Series title:
Journal of Wildlife Management
Volume
54
Issue:
1
Year Published:
1990
Language:
English
Contributing office(s):
Great Lakes Science Center
Description:
p. 72-76
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Wildlife Management
First page:
72
Last page:
76
Number of Pages:
4