U.S. Fi,sh & WJldUf,e,Servlce Abundance and Run Timing of Adult Salmon

A resistance board weir was operated between July 8 and August 13, 2000 to collect abundance, run timing, and biological information from salmon returning to Henshaw Creek, a tributary of the Koyukuk River in north-central Alaska. This was the first year of operating a weir at this location. A total...

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Bibliographic Details
Main Authors: In Henshaw Creek, Kanuti National Wildlife, Refuge Allaska
Other Authors: The Pennsylvania State University CiteSeerX Archives
Format: Text
Language:English
Subjects:
Arctic
Keta
Weir
Arctic grayling
Catostomus catostomus
Esox lucius
Longnose sucker
Northern pike
Thymallus arcticus
Alaska
Online Access:http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.383.6161
http://www.arlis.org/docs/vol1/A/422815051/422815051-2000.pdf
Description
Summary:A resistance board weir was operated between July 8 and August 13, 2000 to collect abundance, run timing, and biological information from salmon returning to Henshaw Creek, a tributary of the Koyukuk River in north-central Alaska. This was the first year of operating a weir at this location. A total estimate of 193 Chinook salmon Oncorhynchus tshawytscha and 24,406 summer chum salmon O. keta passed through the weir. Four resident species were counted with longnose sucker Catostomus catostomus the most abundant (N=325), followed by Arctic grayling Thymallus arcticus (N=21), northern pike Esox lucius (N=4), and whitefish Coregonus spp. (N=1). The median date of passage for Chinook salmon was July 16. The Chinook salmon run was composed of 20 % females. The age distribution was predominately age 1.3 (63%). The median date of passage for chum salmon was July 22. The chum salmon run was composed of 57 % females. The age distribution was predominately age 0.3 (57%) and 0.4 (42%).

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