1992 Specimens at ALA from Cordova Middleton Island Bering Glacier Icy Bay and Yakutat Quadrangles
Cook M. 1992. 1992 Specimens at ALA from Cordova Middleton Island Bering Glacier Icy Bay and Yakutat Quadrangles
From June 23 to July 19 of 1997 and 1998, a portable rigid weir was operated on Tanada Creek, a third order perennial stream and tributary to the upper Copper River in southeast interior Alaska. 1997 is the first year of weir operation in a projected three-year study. Only partial counts were obtained due to delayed installation, limited personnel, and a washout of the weir in a high water event. A total of 20,729 (interpolated to 27,521) sockeye salmon (Oncorhynchus nerka) and 2 chinook salmon (O. tshawytscha) was counted. Only 16 samples for length and sex were sampled for sockeye salmon and did not constitute a representative subsample. The second consecutive year of the weir operation (1998), a total of 28,992 sockeye salmon and 2 chinook salmon were counted. A total of 137 sockeye salmon was sampled for age, length, and sex frequencies. Females comprised 49% of the sample. Approximate mid-eye to fork length for female sockeyes was 540 mm (N=67, SD=30) and 600 mm (N=70, SD=30) for males. Two age groups were present in the sample, with age 1.3 representing 98% of those sampled, and age 1.2 representing 2%; Accession Number WRST-00142.