Stock assessment of burbot in the Tanana and Chena Rivers, 1993
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Author
Contributions
- Alaska. Division of Sport Fish. - Contributor
Publication
1994 - Alaska Dept. of Fish and Game, Division of Sport Fish, Anchorage, Alaska
Language
English
Word Count
5,250 words, Guess
Page Count
21 pages
Identifiers
- Open LibraryOL15577184M
Classifications
- LCCSH11 .F574 1994 no. 11
Description
As part of an ongoing stock assessment program, burbot Lota lota were sampled in two 24 kilometer river sections, one each in the Tanana and Chena rivers, representing the area where most fishing harvest occurs. These sections have been sampled annually since 1986 and 1988, respectively. A systematic sampling design was used, whereby hoop traps were set and moved daily for a period of four days. Estimates of mean catch per unit effort, mean length, length distributions, and proportions of catch for three size categories were calculated. Estimates for each were within the range of observed values from previous sampling years. Seasonal variations in catch rate and composition was cited as a problem in interpreting these annual estimates. Suggestions for improving the study design to alleviate seasonal catch variability are given.
Subjects
Topics
Genres
- Statistics
Series Statement
- Fishery data series -- no. 94-11.
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