Identification of Columbia Basin Sockeye Salmon Stocks Based on Scale Pattern Analyses, 1989
Sockeye salmon (Oncorhynchus nerka Walbaum) is one of five species of Pacific salmon native to the Columbia River Basin. Before White settlers developed the region, the Columbia Basin supported a sockeye salmon run estimated to have averaged more than three million fish annually (Northwest Power Planning Council 1986). Since the mid-1800s, however, this sockeye population has suffered a severe decline. Annual runs now average only about 90,000 fish (Oregon Department of Fish and Wildlife and Washington Department of Fisheries 1988).
Schwartzberg, M. and J. Fryer. 1990. Identification of Columbia Basin Sockeye Stocks Based On Scale Pattern Analysis, 1989. Columbia River Inter-Tribal Fish Commission Technical Report 90-2. Portland, Oregon.