Freshwater aspects of anadromous salmonid enhancement

NOAA Technical Report NMFS Circular 447


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Freshwater enhancement of anadromous salmonid populations has been practiced in the United States and Canada since the late 1800's. Reduction of natural spawning habitat and increasing fishing pressure make artificial enhancement a possible alternative to declining populations.

Enhancement of anadromous salmonids involved improvement of the natural environment and reducing natural mortality. Methods of enhancement include fishways, spawning and rearing channels, stream rehabilitation, lake fertilization, environmental management, and artificial propagation techniques.

Five Pacific salmon species and steelhead trout are commonly enhanced, primarily in watershed entering the Pacific Ocean and Great Lakes. Enhancement efforts contribute heavily to a commercial and sport industry realizing over $1.5 billion.

Publication type Report
Publication Subtype Federal Government Series
Title Freshwater aspects of anadromous salmonid enhancement
Series title NOAA Technical Report NMFS Circular
Series number 447
Year Published 1982
Language English
Publisher National Marine Fisheries Service
Publisher location Silver Spring, MD
Contributing office(s) Leetown Science Center
Description 2 p.
Larger Work Type Report
Larger Work Subtype Federal Government Series
Larger Work Title Proceedings of the the eighth U.S.-Japan meeting on aquaculture at Bellingham, Washington, October 17-18, 1979
First page 21
Last page 22
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