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Travel Time and Influencing Factors for Migrating Adult Sockeye Salmon in Karluk River, Alaska
Author(s) -
Gard Richard
Publication year - 1973
Publication title -
transactions of the american fisheries society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.696
H-Index - 86
eISSN - 1548-8659
pISSN - 0002-8487
DOI - 10.1577/1548-8659(1973)102<723:ttaiff>2.0.co;2
Subject(s) - oncorhynchus , weir , fishery , fish <actinopterygii> , spring (device) , travel time , environmental science , hydrology (agriculture) , geography , biology , geology , mechanical engineering , cartography , geotechnical engineering , transport engineering , engineering
Travel time of adult sockeye salmon (Oncorhynchus nerka) through the Karluk River, Alaska, was determined from fish tagged with Petersen disks about 2 miles (3 km) inside the river mouth and timed as they reached a weir at Karluk Lake, 21 miles (34 km) upstream. Migration time to the weir averaged 7 days for spring run and l0 days for fall run fish. The influence of three factors on travel time was determined by multiple regression analysis. Most important was time of season, followed by number of fish and rainfall.