Evaluation of lake trout stock status and abundance in selected lakes in the upper Copper and upper Susitna drainages, 1995
By: by Nicole J. Szarzi and David R. Bernard.
Contributors: Bernard, David R.; Alaska. Division of Sport Fish.
Series: Fishery data series -- no. 97-5 .
Publisher: Alaska Dept. of Fish and Game, Division of Sport Fish, Research and Technical Services
Published: 1997
Place of publication: Anchorage
Language: eng
Number of pages: 21
Subjects: Lake trout -- Alaska -- Paxson Lake -- Statistics.; Lake trout -- Alaska -- Lake Louise -- Statistics.; Lake trout -- Alaska -- Susitna Lake -- Statistics.; Fish populations -- Alaska -- Paxson Lake -- Measurement.; Fish populations -- Alaska -- Lake Louise -- Measurement.; Fish populations -- Alaska -- Susitna Lake -- Measurement.; Fish stock assessment -- Alaska.; Paxson Lake (Alaska).; Lake Louise (Alaska).; Susitna Lake (Alaska).
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.
Notes: "February 1997"

Includes bibliographical references (p. 17-18).

Also issued online.