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Executive Summary This report profiles the current status and trends of 10 examples of salmon stocks in British Columbia that are considered to be in a severe state of decline. (There are many others.) These stocks were selected because they are geographically located within a region where a number of stocks of that species are […]
Abstract We used data on 64 stocks of sockeye salmon (Oncorhynchus nerka) from British Columbia (B.C.), Washington, and Alaska to determine whether recent decreases in abundance and productivity observed for Fraser River, B.C., sockeye have occurred more widely. We found that decreasing time trends in productivity have occurred across a large geographic area ranging from […]
Abstract This paper outlines stock status for wild Skeena River sockeye salmon based on updated assessments of freshwater production in nursery lakes, available catch and escapement data, and modelled exploitation rates. The aggregate stock is dominated by sockeye returning to the Babine Lake spawning channels at Pinkut and Fulton Creeks. In addition to Babine Lake, […]
Abstract In this report we present summaries of our current knowledge of freshwater factors limiting sockeye production from 60 B.C. lakes. Data were collected between 1977-2000. Quantity of data available for each lake varied, ranging from intensive multi-year ecosystem studies on some lakes to one-time limnological surveys on others. The lakes are located in five […]
Abstract This document presents an assessment of the status of coho salmon (Oncorhynchus kisutch) in the Canadian northern boundary areas with emphasis on the Skeena River. The content of this assessment has largely been drawn from published assessments (Holtby et al, 1999a; Holtby et al, 1999b; Holtby and Kadowaki, 1998; Holtby and Finnegan, 1997). Biological […]
Abstract The Skeena River system has one large sockeye (Oncorhynchus nerka) nursery lake (Babine Lake) and approximately 26 smaller lakes. In this study, we investigated 10 of the larger non-Babine nursery lakes in the system. We examined lake physics, chemistry, several trophic levels important to juvenile sockeye, and juvenile sockeye number, biomass, and diet. Collected […]
Summary This presentation was delivered at a Skeena Salmon Program Data Review workshop held in Terrace on April 4th, 2012. The presentation summarizes the results of a stock-recruit analysis focused on Skeena lake sockeye CUs conducted by Josh Korman and Steve Cox-Rogers and efforts to build a technical framework for identifying possible benchmarks for Skeena […]
