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Visual observations of historical lake trout spawning grounds in western Lake Huron

North American Journal of Fisheries Management

By:
and

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Abstract

Direct underwater video observations were made of the bottom substrates at 12 spawning grounds formerly used by lake trout Salvelinus namaycush in western Lake Huron to evaluate their present suitability for successful reproduction by lake trout. Nine locations examined north of Saginaw Bay in the northwestern end of the lake are thought to provide the best spawning habitat. The substrate at these sites consisted of angular rough cobble and rubble with relatively deep interstitial spaces (a?Y 0.5 m), small amounts of fine sediments, and little or no periphytic growth. Conditions at the three other sampling locations south of Saginaw Bay seemed much less suitable for successful reproduction based on the reduced area of high-quality substrate, shallow interstitial spaces, high infiltration of fine sediments, and greater periphytic growth.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Visual observations of historical lake trout spawning grounds in western Lake Huron
Series title:
North American Journal of Fisheries Management
Volume
7
Issue:
3
Year Published:
1987
Language:
English
Contributing office(s):
Great Lakes Science Center
Description:
p. 418-424
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
North American Journal of Fisheries Management
First page:
418
Last page:
424
Number of Pages:
6