Zobrazeno 1 - 10
of 11
pro vyhledávání: '"David R. Bernard"'
Proportions of Hatchery Fish in Escapements of Summer‐Run Chum Salmon in Southeast Alaska, 2013–2015
Autor:
William D. Templin, Steven C. Heinl, Alex C. Wertheimer, Ronald Josephson, E. Eric Knudsen, David R. Bernard, Andrew W. Piston, David M. Gaudet, Benjamin Adams
Publikováno v:
North American Journal of Fisheries Management. 41:724-738
Publikováno v:
Marine and Coastal Fisheries. 13:41-68
Publikováno v:
Fisheries Research. 44:37-46
We provide evidence that adult chinook salmon Oncorhynchus tshawytscha handled in riverine studies migrate differently upon release from their uncaptured peers. Adults with radio transmitters were released into the Kenai River, Alaska in July 1996 an
Publikováno v:
Canadian Journal of Fisheries and Aquatic Sciences. 55:1983-1995
Methods are presented for planning individual catch-sampling, tagging, and field-sampling programs to estimate salmon (Oncorhynchus spp.) harvest in recreational and commercial fisheries from several hatchery-produced and wild cohorts through recover
Autor:
David R. Bernard, John E. Clark
Publikováno v:
Canadian Journal of Fisheries and Aquatic Sciences. 53:2323-2332
We present a simple, comprehensive method to estimate harvest from one or more hatchery-produced o r wild cohorts of Pacific salmon ( Oncorhynchus spp.) caught simultaneously in one or more stratified commercial or recreational fisheries. The estimat
Publikováno v:
Transactions of the American Fisheries Society. 124:297-307
Some aspects of a previously described migratory paradigm for the southern form of anadromous Dolly Varden Salvelinus malma were investigated with seven 3-year mark–recapture experiments on fish that used lakes in eight watersheds as their winter r
Publikováno v:
North American Journal of Fisheries Management. 13:657-675
Stock assessment from 1986 through 1990 of 15 populations of burbot Lota lota in small to moderate-size Alaskan lakes is described. Adult (≥450 mm total length) and juvenile (300–449 mm total length) burbot were captured in baited hoop traps set
Autor:
David R. Bernard, John H. Clark
Publikováno v:
Transactions of the American Fisheries Society. 121:268-273
Fecundity of 93 humpback whitefish Coregonus pidschian and 80 least ciscoes C. sardinella collected from the Chatanika River, Alaska, was estimated with volumetric methods. Measurement errors in estimates of fecundity were small relative to estimates
Publikováno v:
North American Journal of Fisheries Management. 11:91-104
From 1985 through 1987, the efficacy of baited, rigid hoop traps for catching burbot Lota lota was tested in several lakes and the Tanana River in central Alaska. Experiments were conducted on the diurnal catchability of burbot, optimal baiting strat
Autor:
David R. Bernard, Dan Sharp
Publikováno v:
North American Journal of Fisheries Management. 8:367-372
Precisions of estimated ages from vertebrae, cleithra, opercular bones, otoliths, and scales were measured in replicated trials on samples from lake trout Salvelinus namaycush from interior Alaska. Ages from all structures were similar for sexually i