Author : Julie L. Bednarski
Publisher :
ISBN 13 :
Total Pages : 52 pages
Book Rating : 4.:/5 (959 download)
Book Synopsis Stock Assessment Study of Chilkoot Lake Sockeye Salmon, 2003-2015 by : Julie L. Bednarski
Download or read book Stock Assessment Study of Chilkoot Lake Sockeye Salmon, 2003-2015 written by Julie L. Bednarski and published by . This book was released on 2016 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: From 2013 to 2015, the Alaska Department of Fish and Game, Division of Commercial Fisheries, continued a stock assessment program that begun in 1976 to estimate escapements and harvests of Chilkoot Lake sockeye salmon (Oncorhynchus nerka). Sockeye salmon were counted through a weir near the outlet of Chilkoot Lake, and age, length, and sex data were collected and analyzed each year. Sockeye salmon escapements at the weir were 46,140 fish in 2013, 105,058 fish in 2014, and 71,515 fish in 2015. Visual scale pattern analysis was conducted to determine the proportion of Chilkoot sockeye salmon harvested annually in the District 15 commercial drift gillnet fishery. Estimated commercial drift gillnet harvests of Chilkoot sockeye salmon were 23,111 fish in 2013, 110,487 fish in 2014, and 33,085 fish in 2015. Estimated harvest rates were 36% in 2013, 52% in 2014, and 46% in 2015. In addition, zooplankton and hydroacoustic surveys were conducted in Chilkoot Lake and analyzed each year.