Authors
Danielle
F. Evenson
André J. Talbot
Report Reference
#03-3
Publication Date
May 2003
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Development of a Stock Assessment
and Research Plan for Mid-Columbia River Summer Chinook Salmon
Abstract |
Available
data pertinent to mid-Columbia summer chinook were collected, summarized,
and analyzed to identify information gaps necessary to develop a comprehensive
stock assessment and to propose areas for further research that will
help evaluate current escapement goals and guide future management
plans. Data were gathered on life cycle patterns, stock history, harvest
estimates, abundance estimates, redd counts, carcass recoveries, age
composition of returning adults, coded wire tags, escapement, juvenile
outmigrants, artificial production, and management practices. It was
found that the existing direct data are too limited to adequately
assess abundance and productivity of summer
chinook and determine escapement goals. Data were particularly lacking
for refining estimates of adult escapement, juvenile productivity,
and evaluating of the contribution of artificially propagated fish
to spawning and productivity in the wild; further research is recommended
in these areas. |
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