Download or read book Sonar Estimation of Fall Chum Salmon Abundance in the Sheenjek River 2003 written by Roger D. Dunbar and published by . This book was released on 2006 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reports on the Hydroacoustic Technology Incorporated (HTI) fixed-location, split-beam sonar, which was used to estimate chum salmon, Oncorhynchus keta, escapement in the Sheenjek River from August 9 to September 26, 2003.
Download or read book Sonar Estimation of Fall Chum Salmon Abundance in the Sheenjek River 2022 written by Jody D. Lozori and published by . This book was released on 2022 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Alaska Department of Fish and Game (ADF&G), actively manages chum salmon fisheries in the Yukon River drainage. The purpose of the Sheenjek River sonar project is to monitor escapement of fall chum salmon Oncorhynchus keta in the Sheenjek River. This project will use imaging sonar equipment on the Sheenjek River to generate timely, inseason passage estimates of fall chum salmon bound for spawning grounds in the upper reaches of the river (Dunbar 2013). Beach seine sampling will be conducted to collect biological data used in characterizing the fall chum salmon run. The project site is located approximately 10 km upstream from the mouth of the river (Figure 1) and is scheduled to operate continuously from approximately August 8 through September 24 annually.
Download or read book Sonar Estimation of Fall Chum Salmon Abundance in the Sheenjek River 2004 written by Roger D. Dunbar and published by . This book was released on 2008 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reports on the Hydroacoustic Technology Incorporated (HTI) fixed-location, split-beam sonar, which was used to estimate chum salmon, Oncorhynchus keta, escapement in the Sheenjek River from August 8 to September 25, 2004.
Download or read book Sonar Estimation of Fall Chum Salmon Abundance in the Sheenjek River 2006 written by Roger D. Dunbar and published by . This book was released on 2009 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reports on the Dual-Frequency Identification Sonar (DIDSON), which was used to estimate chum salmon, Oncorhynchus keta, escapement in the Sheenjek River from August 9 to September 24, 2006.
Download or read book Sonar Estimation of Fall Chum Salmon Abundance in the Sheenjek River 2005 written by Roger D. Dunbar and published by . This book was released on 2009 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reports on the Dual-Frequency Identification Sonar (DIDSON), which was used to estimate chum salmon, Oncorhynchus keta, escapement in the Sheenjek River from August 10 to September 24, 2005. This was the first season that DIDSON was used to estimate chum salmon passage in the Sheenjek River, and the first season that both banks were fully monitored since 1987.
Download or read book Sonar Estimation of Fall Chum Salmon Abundance in the Sheenjek River 2010 written by Roger D. Dunbar and published by . This book was released on 2012 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reports on the Dual-Frequency Identification Sonar (DIDSON), which was used to estimate chum salmon, Oncorhynchus keta, escapement in the Sheenjek River from August 18 to September 24, 2010.
Download or read book Sonar Estimation of Fall Chum Salmon Abundance in the Sheenjek River 2007 written by Roger D. Dunbar and published by . This book was released on 2009 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reports on the Dual-Frequency Identification Sonar (DIDSON), which was used to estimate chum salmon, Oncorhynchus keta, escapement in the Sheenjek River from August 11 to September 24, 2007.
Download or read book Sonar Estimation of Fall Chum Salmon Abundance in the Sheenjek River 2008 written by Roger D. Dunbar and published by . This book was released on 2009 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reports on the Dual-Frequency Identification Sonar (DIDSON), which was used to estimate chum salmon, Oncorhynchus keta, escapement in the Sheenjek River from August 9 to September 24, 2008.
Download or read book Sonar Estimation of Fall Chum Salmon Abundance in the Sheenjek River 2009 written by Roger D. Dunbar and published by . This book was released on 2010 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reports on the Dual-Frequency Identification Sonar (DIDSON), which was used to estimate chum salmon, Oncorhynchus keta, escapement in the Sheenjek River from August 15 to September 24, 2009.
Download or read book Sonar Estimation of Fall Chum Salmon Abundance in the Sheenjek River 2011 written by Roger D. Dunbar and published by . This book was released on 2012 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reports on the Dual-Frequency Identification Sonar (DIDSON), which was used to estimate chum salmon, Oncorhynchus keta, escapement in the Sheenjek River from August 8 to September 24, 2011.
Download or read book Sonar Estimation of Fall Chum Salmon Abundance in the Sheenjek River 2012 written by Roger D. Dunbar and published by . This book was released on 2013 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reports on the Dual-Frequency Identification Sonar (DIDSON), which was used to estimate chum salmon, Oncorhynchus keta, escapement in the Sheenjek River from August 9 to September 24, 2012.
Download or read book Sonar Enumeration of Fall Chum Salmon on the Sheenjek River 1993 written by Louis H. Barton and published by . This book was released on 1994 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: A side-scanning sonar fish counter was used to estimate fall chum salmon escapement in the Sheenjek River, a second-order tributary of the Yukon River, from August 8 through September 28, 1993.
Download or read book Sonar enumeration of fall chum salmon on the Sheenjek River 1988 1992 written by Louis H. Barton and published by . This book was released on 1995 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sonar Estimation of Summer Chum and Pink Salmon Abundance in the Anvik River 2023 written by Jody D. Lozori and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Alaska Department of Fish and Game (ADF&G), actively manages chum salmon fisheries in the Yukon River drainage. The purpose of the Anvik River sonar project is to monitor escapement of summer chum salmon Oncorhynchus keta and pink salmon O. gorbuscha in the Anvik River drainage, believed to be the largest producer of summer chum salmon in the Yukon River drainage (Hayes et al. 2008, Larson et al. 2017). Timely and accurate reporting of information from the Anvik River sonar project helps Yukon River fishery managers ensure the Anvik River Biological Escapement Goal (BEG) of 350,000 to 700,000 summer chum salmon is met (ADF&G 2004). This assessment is necessary to determine if summer chum salmon abundance will meet downstream harvest and upstream escapement needs. Fishery openings and closures may be based in part upon this assessment. This project uses imaging sonar equipment on the Anvik River to generate timely, in-season passage estimates of salmon (Brodersen 2021). Beach seine sampling is conducted to collect biological data used in characterizing the summer chum salmon run and tower estimates are used to apportion passage estimates to species. The project site is located approximately 76 km upstream from the mouth of the Anvik River (Figures 1 and 2) and is scheduled to operate continuously from approximately June 16 through July 26, 2023.
Download or read book Enumeration of Fall Chum Salmon by Side scanning Sonar in the Sheenjek River in 1985 written by Louis H. Barton and published by . This book was released on 1986 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fall Chum Salmon Abundance Estimation on the Tanana and Kantishna Rivers Using Mark recapture Techniques 2003 written by Peter Mallon Cleary and published by . This book was released on 2004 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reports the results of fall 2003 chum salmon, Oncorhynchus keta, fish wheel mark-recapture studies on the Tanana and Kantishna Rivers.
Download or read book Sonar Estimation of Chinook and Fall Chum Salmon Passage in the Yukon River Near Eagle Alaska 2020 written by Michael J. McDougall and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Adaptive resolution imaging sonar (ARIS) and split-beam sonar equipment were used to estimate Chinook salmon Oncorhynchus tshawytscha and fall chum salmon O. keta passage in the Yukon River near Eagle, Alaska, from July 1 through October 6, 2020. A total of 33,550 (SE 219) Chinook salmon were estimated to have passed the sonar site from July 1 through August 27. The midpoint of the Chinook salmon migration occurred on July 29, which was 5 days later than the historical mean date. A total of 20,766 (SE 177) fall chum salmon were estimated to have passed the sonar site from August 28 through October 6. The fall chum salmon passage estimate was subsequently expanded to a total of 23,512 to include fish that may have passed after operations ceased. The midpoint of the fall chum salmon migration (based on the expanded estimate) occurred on September 24, which was 1 day later than the historical mean date. Drift gillnetting was conducted to collect age, sex, and length samples and tissue samples for genetic information. Species composition was analyzed to determine when the Chinook salmon migration ended and the fall chum salmon migration began.
