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

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

BurbotStatisticsFish populationsBurbot -- Alaska -- Chena River -- StatisticsBurbot -- Alaska -- Tanana River -- StatisticsFish populations -- Alaska -- Chena River -- StatisticsFish populations -- Alaska -- Tanana River -- Statistics

Genres

  • Statistics

Series Statement

  • Fishery data series -- no. 94-11.

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