Status of Columbia River Salmon and Steelhead Trout
Author : Frederick Charles Cleaver
Publisher :
Page : 36 pages
File Size : 25,49 MB
Release : 1972
Category : Fisheries
ISBN :
Author : Frederick Charles Cleaver
Publisher :
Page : 36 pages
File Size : 25,49 MB
Release : 1972
Category : Fisheries
ISBN :
Author : Frederick Charles Cleaver
Publisher :
Page : 0 pages
File Size : 15,45 MB
Release : 1972
Category : Fisheries
ISBN :
Author :
Publisher :
Page : 26 pages
File Size : 43,93 MB
Release : 1972
Category : Fisheries
ISBN :
Author : Anthony Netboy
Publisher : Seattle : University of Washington Press
Page : 208 pages
File Size : 36,64 MB
Release : 1980
Category : Fishes
ISBN :
Author : Columbia River Fisheries Council
Publisher :
Page : 80 pages
File Size : 15,99 MB
Release : 1981
Category : Fishery management
ISBN :
Author :
Publisher :
Page : 280 pages
File Size : 47,59 MB
Release : 1986
Category : Columbia River Watershed
ISBN :
Author : A. John Ross
Publisher :
Page : 40 pages
File Size : 37,88 MB
Release : 1959
Category : Bacillus (Bacteria)
ISBN :
Abstract: The degree of incidence of acid-fast bacillus infections in adult salmonid fishes was determined. The disease was shown to be widely distributed in the area examined. It is believed the primary source of infection is derived from the hatchery practice of feeding infected salmon products to juvenile fish. One group of marked adults that had been hatchery reared for 370 days showed a 62 percent incidence of infection. A statistical analysis indicated that length of fish is independent of infection.
Author : Richard N. Williams
Publisher : Elsevier
Page : 720 pages
File Size : 18,24 MB
Release : 2005-11-21
Category : Science
ISBN : 0080454305
Return to the River will describe a new ecosystem-based approach to the restoration of salmon and steelhead populations in the Columbia River, once one of the most productive river basins for anadromous salmonids on the west coast of North America. The approach of this work has broad applicability to all recovery efforts throughout the northern hemisphere and general applicability to fisheries and aquatic restoration efforts throughout the world. The Pacific Northwest is now embroiled in a major public policy debate over the management and restoration of Pacific salmon. The outcome of the debate has the potential to affect major segments of the region's economy - river transportation, hydroelectric production, irrigated agriculture, urban growth, commercial and sport fisheries, etc. This debate, centered as it is on the salmon in all the rivers, has created a huge demand for information. The book will be a powerful addition to that debate. - A 15 year collaboration by a diverse group of scientists working on the management and recovery of salmon, steelhead trout, and wildlife populations in the Pacific Northwest - Includes over 200 figures, with four-color throughout the book - Discusses complex issues such as habitat degradation, juvenile survival through the hydrosystem, the role of artificial production, and harvest reform
Author : Zell E. Parkhurst
Publisher :
Page : 108 pages
File Size : 43,72 MB
Release : 1950
Category : Columbia River
ISBN :
Author : Philip A. Meyer
Publisher :
Page : 52 pages
File Size : 30,48 MB
Release : 1982
Category : Fisheries
ISBN :