Northwest Alaska dolly varden study 1989
Decicco AL. 1990. Northwest Alaska dolly varden study 1989. Fishery Data Series. Alaska Department of Fish and Game. Division of Sport Fish. Anchorage, AK
(Adapted from author's abstract.) Stock assessment of dolly varden in the Kotzebue Sound area continued during 1989. The spring subsistence fishery at Kivalina harvested 1,889 dolly varden with a mean fork length of 506 mm. The harvest was composed of 70.3 percent females and 29.7 percent males. An estimated 76,892 dolly varden over 400 mm in fork length overwintered in the Wulik River during 1988/89. During an aerial survey on 13 September 1988, 80,144 dolly varden were counted. An estimated 4,874 dolly varden were taken incidentally in the 1989 Kotzebue Sound commercial chum salmon fishery. The sex composition of the catch was 66 percent females and 34 percent males. The 1989 fall subsistence dolly varden harvest at Kivalina was 4,820 and 4,500 at Noatak. During aerial surveys of overwintering populations conducted on 4 October 1989, 56,384 and 5,090 dolly varden were counted in the Wulik and Kivalina rivers, respectively. Elevated levels of heavy metals in Red Dog Creek appeared to influence the distribution of overwintering dolly varden in the Wulik River 59 km downstream from their source.
- Type
- Published Report
- Authors
- Decicco, Alfred
- Date of Issue
- 1990
- Publisher
- Alaska Department of Fish and Game. Division of Sport Fish
- Units
- CAKR , KOVA , NOAT
- Keywords
- Aerial Surveys, Cape Krusenstern National Monument, char, Chum Salmon, Distribution, Dolly Varden, Fish, Fisheries, Heavy Metals, Kivalina River, Kobuk Valley National Park, Kotzebue Sound, Kugururok River, Length composition, Noatak National Preserve, Noatak River, Oncorhynchus keta, Population, Red Dog Creek, Salvelinus Malma, Sex composition, Wulik River