Download or read book Sonar Estimation of Chinook and Fall Chum Salmon Passage in the Yukon River Near Eagle Alaska 2008 written by Ann B. Crane and published by . This book was released on 2009 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reports on the results of using the Dual-Frequency Identification Sonar (DIDSON) and split-beam sonar equipment, which were used to estimate chinook salmon, Oncorhynchus tshawytscha, and fall chum salmon, O. keta, passage in the Yukon River near Eagle, Alaska from July 6 to October 6, 2008.

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.

Download or read book Sonar Estimation of Chinook and Fall Chum Salmon Passage in the Yukon River Near Eagle Alaska 2021 written by Naomi B. Brodersen 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 June 28 through October 6, 2021. A total of 31,796 (SE 207) Chinook salmon were estimated to have passed the sonar site from June 28 through August 31. The midpoint of the Chinook salmon migration occurred on July 29, which was 5 days later than the historical mean date. A total of 19,668 (SE 243) fall chum salmon were estimated to have passed the sonar site from September 1 through October 6. The fall chum salmon passage estimate was subsequently expanded to a total of 23,170 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 27, which was 4 days 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.

Download or read book Sonar Estimation of Chinook and Fall Chum Salmon Passage in the Yukon River Near Eagle Alaska 2019 written by Michael J. McDougall and published by . This book was released on 2020 with total page 56 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, 2019. A total of 45,560 (SE = 274) Chinook salmon were estimated to have passed the sonar site from July 1 through August 14. The midpoint of the Chinook salmon migration occurred on July 26, which was 2 days later than the historical mean date. A total of 101,678 (SE = 544) fall chum salmon were estimated to have passed the sonar site from August 15 through October 6. The fall chum salmon passage estimate was subsequently expanded to a total of 113,256 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 25, which was 2 days 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.

Download or read book Sonar Estimation of Chinook and Fall Chum Salmon Passage in the Yukon River Near Eagle Alaska 2022 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 June 29 through October 6, 2022. A total of 12,025 (SE 119) Chinook salmon were estimated to have passed the sonar site from July 1 through August 21. The midpoint of the Chinook salmon migration occurred on July 29, which was 5 days later than the historical mean date. A total of 21,063 (SE 164) fall chum salmon were estimated to have passed the sonar site from August 22 through October 6. The fall chum salmon passage estimate was subsequently expanded to a total of 22,075 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 20, which was 3 days earlier 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.

Download or read book Sonar Estimation of Chinook and Fall Chum Salmon Passage in the Yukon River Near Eagle Alaska 2017 written by Michael J. McDougall and published by . This book was released on 2018 with total page 56 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 to October 6, 2017. A total of 73,313 (SE 373) Chinook salmon were estimated to have passed the sonar site between July 1 and August 20. The midpoint of the Chinook salmon run occurred on July 22, which was 2 days early relative to the historical mean date. An estimated 407,166 (SE 1,566) fall chum salmon passed between August 21 and October 6. The sonar-estimated passage of fall chum salmon was subsequently expanded to a total passage estimate of 419,099 to include fish that may have passed after operations ceased. The midpoint of the expanded fall chum salmon estimate occurred on September 21, which was 2 days earlier than the historical mean date. Subtracting the preliminary subsistence catch upstream of the sonar site resulted in an estimated border passage of 71,815 Chinook salmon and 404,989 fall chum salmon. Drift gillnetting was conducted to collect age, sex, and length samples and tissue samples for genetic information. Species composition was also recorded to determine when the Chinook salmon run ended and the fall chum salmon run began.

Download or read book Sonar Estimation of Chinook and Fall Chum Salmon Passage in the Yukon River Near Eagle Alaska 2016 written by Michael J. McDougall and published by . This book was released on 2017 with total page 58 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 to October 6, 2016. A total of 72,329 Chinook salmon were estimated to have passed the sonar site between July 1 and August 17. The midpoint of the Chinook salmon run occurred on July 18, which was 6 days early relative to the historical mean date. An estimated 144,035 fall chum salmon passed between August 18 and October 6. The sonar-estimated passage of fall chum salmon was subsequently expanded to a total passage estimate of 161,025 to include fish that may have passed after operations ceased. The midpoint of the expanded fall chum salmon estimate occurred on September 26, which was 4 days later than the historical mean date. Subtracting the preliminary subsistence catch upstream of the sonar site resulted in an estimated border passage of 71,574 Chinook salmon and 148,071 fall chum salmon. Drift gillnetting was conducted to collect age, sex, and length samples and tissue samples for genetic information. Species composition was also recorded to determine when the Chinook salmon run ended and the fall chum salmon run began.

Download or read book Sonar Estimation of Chinook and Fall Chum Salmon Passage in the Yukon River Near Eagle Alaska 2018 written by Naomi B. Brodersen and published by . This book was released on 2020 with total page 58 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 4 through October 6, 2018. A total of 57,893 (SE 361) Chinook salmon were estimated to have passed the sonar site from July 4 through August 19. The midpoint of the Chinook salmon migration occurred on July 26, which was 2 days later than the historical mean date. A total of 136,734 (SE 729) fall chum salmon were estimated to have passed the sonar site from August 20 through October 6. The fall chum salmon passage estimate was subsequently expanded to a total of 168,800 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 28, which was 5 days later than the historical mean date. Subtracting the preliminary subsistence harvest upstream of the sonar site resulted in an estimated border passage of 57,264 Chinook salmon and 157,085 fall chum salmon. Drift gillnetting was conducted to collect age, sex, and length samples and tissue samples for genetic information. Species composition was also recorded to determine when the Chinook salmon migration ended, and the fall chum salmon migration began.

Download or read book Sonar Estimation of Chinook and Fall Chum Salmon Passage in the Yukon River Near Eagle Alaska 2015 written by Jody D. Lozori and published by . This book was released on 2016 with total page 58 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 Oncorhynchus keta passage in the Yukon River near Eagle, Alaska from June 30 to October 6, 2015. A total of 84,015 Chinook salmon were estimated to have passed the sonar site between June 30 and August 15. The midpoint of the Chinook salmon run occurred on July 23, which was 2 days early relative to the historical mean date of July 25. An estimated 112,095 fall chum salmon passed between August 16 and October 6. The sonar-estimated passage of fall chum salmon was subsequently expanded to a total passage estimate of 125,095 to include fish that may have passed after operations ceased. The midpoint of the expanded fall chum salmon estimate occurred on September 25, which is 3 days later than the historical mean date. Subtracting the preliminary subsistence catch upstream of the sonar site resulted in an estimated border passage of 83,674 Chinook salmon and 112,555 fall chum salmon. Drift gillnetting was conducted to collect age, sex, and length samples and tissue samples for genetic information. Species composition was also recorded to determine when the Chinook salmon run ended and the fall chum salmon run began.

Download or read book Sonar Estimation of Chinook and Fall Chum Salmon Passage in the Yukon River Near Eagle Alaska 2009 written by Ann B. Crane and published by . This book was released on 2011 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reports on the results of using the Dual-Frequency Identification Sonar (DIDSON) and split-beam sonar equipment, which were used to estimate Chinook salmon, Oncorhynchus tshawytscha, and fall chum salmon, Oncorhynchus keta, passage in the Yukon River near Eagle, Alaska from July 5 to October 6, 2009. This continued long-term hydroacoustic enumeration project for Chinook and chum salmon near the United States/Canada border will help fishery managers meet conservation and management commitments made by both countries under the Yukon River Salmon Agreement.

Download or read book Sonar Estimation of Chinook and Fall Chum Salmon Passage in the Yukon River Near Eagle Alaska 2010 written by Ann B. Crane and published by . This book was released on 2011 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reports on the results of using the Dual-Frequency Identification Sonar (DIDSON) and split-beam sonar equipment, which were used to estimate Chinook salmon, Oncorhynchus tshawytscha, and fall chum salmon, Oncorhynchus keta, passage in the Yukon River near Eagle, Alaska from July 3 to October 6, 2010. This continued long-term hydroacoustic enumeration project for Chinook and chum salmon near the United States/Canada border will help fishery managers meet conservation and management commitments made by both countries under the Yukon River Salmon Agreement.

Download or read book Sonar Estimation of Chinook and Fall Chum Salmon Passage in the Yukon River Near Eagle Alaska 2011 written by Elizabeth A. Smith and published by . This book was released on 2012 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reports on the results of using the Dual-Frequency Identification Sonar (DIDSON) and split-beam sonar equipment, which were used to estimate Chinook salmon, Oncorhynchus tshawytscha, and fall chum salmon, Oncorhynchus keta, passage in the Yukon River near Eagle, Alaska from July 5 to October 6, 2011. This continued long-term hydroacoustic enumeration project for Chinook and chum salmon near the United States/Canada border will help fishery managers meet conservation and management commitments made by both countries under the Yukon River Salmon Agreement.

Download or read book Sonar Estimation of Chinook and Fall Chum Salmon Passage in the Yukon River Near Eagle Alaska 2014 written by Jody D. Lozori and published by . This book was released on 2015 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dual frequency identification sonar and split-beam sonar equipment were used to estimate Chinook salmon Oncorhynchus tshawytscha and fall chum salmon Oncorhynchus keta passage in the Yukon River near Eagle, Alaska from June 27 to October 6, 2014.

Download or read book Sonar Estimation of Chinook and Fall Chum Salmon Passage in the Yukon River Near Eagle Alaska 2012 written by Elizabeth A Smith and published by . This book was released on 2015 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dual frequency identification sonar and split-beam sonar equipment were used to estimate Chinook salmon Oncorhynchus tshawytscha and fall chum salmon Oncorhynchus keta passage in the Yukon River near Eagle, Alaska from July 4 to October 6, 2012.

Download or read book Sonar Estimation of Chinook and Fall Chum Salmon Passage in the Yukon River Near Eagle Alaska 2013 written by Jody D. Lozori and published by . This book was released on 2015 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dual frequency identification sonar and split-beam sonar equipment were used to estimate Chinook salmon Oncorhynchus tshawytscha and fall chum salmon Oncorhynchus keta passage in the Yukon River near Eagle, Alaska from July 6 to October 6, 2013.

Download or read book Sonar Estimation of Chinook and Fall Chum Salmon in the Yukon River Near Eagle Alaska 2006 written by Roger D. Dunbar and published by . This book was released on 2007 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reports on the results of using the Dual-Frequency Identification Sonar (DIDSON) and split-beam sonar equipment, which were used to estimate chinook salmon, Oncorhynchus tshawytscha, and fall chum salmon, O. keta, passage in the Yukon River near Eagle, Alaska from July 8 to October 6, 2006.

Download or read book Sonar Estimation of Chinook and Fall Chum Salmon in the Yukon River Near Eagle Alaska 2007 written by Ann B. Crane and published by . This book was released on 2009 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reports on the results of using the Dual-Frequency Identification Sonar (DIDSON) and split-beam sonar equipment, which were used to estimate chinook salmon, Oncorhynchus tshawytscha, and fall chum salmon, O. keta, passage in the Yukon River near Eagle, Alaska from July 7 to October 6, 2007.