Stock assessment of burbot in the Tanana and Chena Rivers, 1993
By: by Matthew J. Evenson.
Contributors: Alaska. Division of Sport Fish.
Series: Fishery data series -- no. 94-11.
Publisher: Alaska Dept. of Fish and Game, Division of Sport Fish
Published: 1994
Place of publication: Anchorage
Language: eng
Number of pages: 21
Subjects: Burbot -- Alaska -- Tanana River -- Statistics.; Burbot -- Alaska -- Chena River -- Statistics.; Fish populations -- Alaska -- Tanana River -- Statistics.; Fish populations -- Alaska -- Chena River -- Statistics.
Genres: Statistics.
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.
Notes: "July 1994".

Includes bibliographical references (p. 17-18).

Also issued online.