Evaluation of lake trout stock status and abundance in selected lakes in the upper Copper and upper Susitna drainages, 1995
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Author
Contributions
- Bernard, David R. - Contributor
- Alaska. Division of Sport Fish. - Contributor
Publication
1997 - Alaska Dept. of Fish and Game, Division of Sport Fish, Research and Technical Services, Anchorage, Alaska
Language
English
Word Count
5,250 words, Guess
Page Count
21 pages
Identifiers
- Open LibraryOL15450029M
Classifications
- DDC597.55/097983
Description
Mark-recapture experiments were conducted to estimate abundance of male lake trout Salvelinus namaycush on sampled spawning grounds and their survival rates and recruitment in Paxson Lake in the Copper River drainage and Lake Louise in the Susitna River drainage. Maximum sustainable yields and carrying capacities of populations in Paxson Lake, Lake Louise and Susitna Lake were estimated with thermal habitat volume (THV) measurements: the average volume of water between 8 and 12C. The mark-recapture experiment conducted at Paxson Lake in 1995 generated an estimate of abundance for 1994 of 2,438 (SE = 94) male lake trout on the sampled spawning beds. An estimated 1,857 (SE = 88) males were present on the sampled spawning beds of Lake Louise in 1995. Estimated maximum sustainable yield of lake trout from Paxson Lake is 0.89 kg ha-1 y-1, 0.93 kg ha-1 y-1 from Lake Louise and 0.98 kg ha-1 y-1 for Susitna Lake. Current harvests from all three lakes are below these levels.
Subjects
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Series Statement
- Fishery data series -- no. 97-5 .
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