Download or read book Estimation of Yukon River Salmon Passage in 2001 Using Hydroacoustic Methodologies written by Carl Thomas Pfisterer and published by . This book was released on 2002 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt: Daily passage estimates for chinook salmon (Oncorhynchus tshawytscha) and summer and fall chum salmon (Oncorhynchus keta) are provided for the corresponding 2001 Yukon River escapement. A two component process was utilized: estimation of total fish passage via a single-beam sonar at the confluence of the Yukon and Atchuelinguk rivers, and estimation of species proportions by sampling with a series of gillnets near the same (Pilot Station) site.

Download or read book Estimation of Aniak River Chum Salmon Passage in 2001 Using Hydroacoustic Methodologies written by Douglas W. Lieb and published by . This book was released on 2002 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Salmonid Field Protocols Handbook written by David H. Johnson and published by . This book was released on 2007 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first publication to collect, standardize, and recommend a scientifically rigorous set of field protocols for monitoring and assessing salmon and trout populations. Includes five additional techniques that can be used with any of the 13 principle methods to supplement information gathered.Over four dozen fisheries experts throughout the U.S. Pacific Northwest and beyond contributed their time to pick, write, and review the most reliable protocols for enumerating salmonids in the field. Presented in an easy to use format, each of the 18 peer-reviewed protocols covers objectives, sample design, data handling, personnel and operational requirements, and field and office techniques, including survey forms.Standardized monitoring protocols will improve data reliability, maximize opportunities for data sharing and data set comparability, and ultimately improve the ability to assess status and trends. The Handbook will also support consistency in data collection for salmonids at the international level.

Download or read book Evaluation of Hydroacoustic Site on the Yukon River Near Eagle Alaska for Monitoring Passage of Salmon Across the US Canada Border 2004 written by Holly C. Carroll and published by . This book was released on 2007 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: A 2-week study was undertaken from August 18 to August 30, 2004, to locate an appropriate site to deploy sonar for use in a long-term enumeration study of chinook salmon, Oncorhynchus tshawytscha, and fall chum salmon, O. keta, on the Yukon River near the Alaska/Canada border. Dual-Frequency Identification Sonar (DIDSONTM) and split-beam sonar equipment were tested at Calico Bluff and Six-Mile Bend, both sites within 12 miles of Eagle, Alaska. Bottom profiles were produced for the two potential sites and despite technical malfunctions with the split-beam equipment, which rendered x-y position information unusable, two suitable sonar deployment locations were found. Both split-beam and DIDSONTM systems have their strengths, and by using the DIDSONTM on a relatively steep, short cobble shore (where fish tend to be distributed inshore), and the split-beam on a long, gentle sloping bank, acoustic coverage of the river should be sufficient for fish enumeration. Six-Mile Bend was the most suitable location for a future sonar project because of its linear left-bank, stable cobble substrate, single channel and proximity to the Alaska/Canada Border. Sonar will need to be deployed on the right bank at Six-Mile Bend in future seasons. A long-term enumeration project for chinook and chum salmon near the border will provide information to help fishery managers meet conservation and management commitments made by the U.S. and Canada under the Yukon River Salmon Agreement.

Download or read book Evaluation of Hydroacoustic Site on the Yukon River to Monitor Passage of Salmon Across the US Canada Border 2003 written by Carl Thomas Pfisterer and published by . This book was released on 2004 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Objective of this study was to identify a suitable location on the Yukon River to deploy hydroacoustic equipment to detect chinook and chum salmon migrating into Canada ... Transects were taken starting at White Rock in Canada proceeding downriver to a sandbar below Calico Bluff in Alaska"--P. 2.

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 Salmon Passage in the Yukon River Near Pilot Station Alaska 2010 written by Jody D. Lozori and published by . This book was released on 2020 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Pilot Station sonar project has provided daily passage estimates for Chinook (Oncorhynchus tshawytscha), chum (O. keta), and coho (O. kisutch) salmon for most years since 1986. Fish passage estimates for each species were generated in 2010 using a 2-component process: (1) estimation of total fish passage using 120 kHz split-beam sonar and a dual-frequency identification sonar (DIDSON), and (2) apportionment to species by sampling using a suite of gillnets of various mesh sizes. An estimated 3,683,588 fish passed through the sonar sampling area between June 1 and September 7. Of those fish, 662,329 passed along the right bank and 3,021,259 passed along the left bank. Included, with 90% confidence intervals, were 112,605 ± 49,275 large Chinook salmon (>655 mm mideye tail fork), 25,294 ± 36,165 small Chinook salmon (=655 mm mideye tail fork), 1,423,372 ± 89,356 summer chum salmon, 458,103 ± 40,797 fall chum salmon, 177,724 ± 12,489 coho salmon, 919,036 ± 63,942 pink salmon, 281,456 ± 37,151 cisco, 175,749 ± 21,348 humpback whitefish, 19,835 ± 6,581 broad whitefish, 49,250 ± 31,895 sheefish, and 41,164 ± 29,700 other species.

Download or read book Sonar Estimation of Salmon Passage in the Yukon River Near Pilot Station 2011 written by Jody D. Lozori and published by . This book was released on 2014 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results of a Yukon River sonar project, which provided estimates of Chinook salmon Oncorhynchus tshawytscha, chum salmon O. keta, and coho salmon O. kisutch daily passage on the Yukon River near Pilot Station, Alaska. Fish passage estimates for each species were generated in 2011 through a two-component process: (1) estimation of total fish passage with 120 kHz split-beam sonar and a Dual Frequency Identification Sonar (DIDSON), and (2) apportionment to species by sampling with a suite of gillnets of various mesh sizes.

Download or read book Sonar Estimation of Salmon Passage in the Yukon River Near Pilot Station 2008 written by Jody D. Lozori and published by . This book was released on 2013 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results of a Yukon River sonar project, which provided estimates of Chinook salmon Oncorhynchus tshawytscha, chum salmon O. keta, and coho salmon O. kisutch daily passage on the Yukon River near Pilot Station, Alaska. Fish passage estimates for each species were generated in 2008 through a two-component process: (1) estimation of total fish passage with 120 kHz split-beam sonar and a Dual Frequency Identification Sonar (DIDSON), and (2) apportionment to species by sampling with a suite of gillnets of various mesh sizes.

Download or read book Sonar Estimation of Salmon Passage in the Yukon River Near Pilot Station 2006 written by Holly C. Carroll and published by . This book was released on 2008 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results of a Yukon River sonar project, which provided estimates of Chinook salmon Oncorhynchus tshawytscha, chum salmon O. keta, and coho salmon O. kisutch daily passage from June 5-August 31, 2006, on the Yukon River near Pilot Station, Alaska. Fish passage estimates for each species were generated through a 2-component process: (1) estimation of total fish passage with 120 kHz split-beam sonar and a Dual Frequency Identification Sonar (DIDSON), and (2) apportionment to species by sampling with a suite of gillnets of various mesh sizes.

Download or read book Sonar Estimation of Salmon Passage in the Yukon River Near Pilot Station 2007 written by Holly C. Carroll and published by . This book was released on 2011 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results of a Yukon River sonar project, which provided estimates of Chinook salmon Oncorhynchus tshawytscha, chum salmon O. keta, and coho salmon O. kisutch daily passage from June 2-August 31, 2007, on the Yukon River near Pilot Station, Alaska. Fish passage estimates for each species were generated through a 2-component process: (1) estimation of total fish passage with 120 kHz split-beam sonar and a Dual Frequency Identification Sonar (DIDSON), and (2) apportionment to species by sampling with a suite of gillnets of various mesh sizes.

Download or read book Sonar Estimation of Salmon Passage in the Yukon River Near Pilot Station 2019 written by Ryan P. Morrill and published by . This book was released on 2021 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Pilot Station sonar project has provided daily passage estimates of Chinook (Oncorhynchus tshawytscha), chum (O. keta), and coho (O. kisutch) salmon for most years since 1986. Fish passage estimates for each species were generated in 2019 using a 2-component process: (1) estimation of total fish passage with 120 kHz split-beam sonar and an adaptive resolution imaging sonar, and (2) apportionment to species by sampling using a suite of gillnets of various mesh sizes. An estimated 3,161,920 fish passed through the sonar sampling area between June 2 and August 31. Of those fish, 690,494 passed along the right bank, and 2,471,426 passed along the left bank. Included, with 90% confidence intervals, were 172,242 ± 18,964 large Chinook salmon (>655 mm to fork of tail), 47,382 ± 7,725 small Chinook salmon (≤655 mm to fork of tail), 1,402,925 ± 85,902 summer chum salmon, 842,041 ± 37,151 fall chum salmon, 86,401 ± 9,530 coho salmon, 42,353 ± 8,893 pink salmon, 270,434 ± 36,596 cisco, 196,905 ± 30,456 humpback whitefish, 25,694 ± 5,256 broad whitefish, 22,673 ± 5,948 sheefish, and 52,870 ± 5,659 other species.

Download or read book Sonar Estimation of Salmon Passage in the Yukon River Near Pilot Station 2020 written by Ryan P. Morrill and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Pilot Station sonar project has provided daily passage estimates of Chinook (Oncorhynchus tshawytscha), chum (O. keta), and coho (O. kisutch) salmon for most years since 1986. Fish passage estimates for each species were generated in 2020 using a 2-component process: (1) estimation of total fish passage with 120 kHz split-beam sonar and an adaptive resolution imaging sonar, and (2) apportionment to species by sampling using a suite of gillnets of various mesh sizes. An estimated 1,821,202 fish passed through the sonar sampling area between June 7 and September 7. Of those fish, 378,545 passed along the right bank and 1,442,657 along the left bank. Included, with 90% confidence intervals, were 124,905 ± 17,588 large Chinook salmon (>655 mm from middle of eye to tail fork [METF]), 37,347 ± 7,100 small Chinook salmon (≤655 mm METF), 692,602 ± 36,325 summer chum salmon, 262,439 ± 17,810 fall chum salmon, 107,680 ± 6,843 coho salmon, 207,942 ± 18,745 pink salmon, 163,546 ± 21,976 cisco, 146,162 ± 18,243 humpback whitefish, 21,352 ± 3,328 broad whitefish, 24,849 ± 5,361 sheefish, and 32,378 ± 4,027 other species.

Download or read book Sonar Estimation of Salmon Passage in the Yukon River Near Pilot Station 2021 written by Ryan P. Morrill and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Pilot Station sonar project has provided daily passage estimates of Chinook (Oncorhynchus tshawytscha), chum (O. keta), and coho (O. kisutch) salmon for most years since 1986. Fish passage estimates for each species were generated in 2021 using a 2-component process: (1) estimation of total fish passage with 120 kHz split-beam sonar and an adaptive resolution imaging sonar, and (2) apportionment to species by sampling using a suite of gillnets of various mesh sizes. An estimated 1,040,660 fish passed through the sonar sampling area between May 31 and September 7. Of those fish, 218,819 passed along the right bank, and 821,841 passed along the left bank. Included, with 90% confidence intervals, were 104,267 ± 10,339 large Chinook salmon (>655 mm from middle of the eye to tail fork [METF]), 20,578 ± 3,232 small Chinook salmon (≤655 mm METF), 153,718 ± 16,149 summer chum salmon, 146,197 ± 11,686 fall chum salmon, 37,255 ± 3,879 coho salmon, 22,181 ± 5,832 pink salmon, 195,566 ± 25,264 cisco, 264,160 ± 21,191 humpback whitefish, 23,859 ± 3,971 broad whitefish, 34,820 ± 5,374 sheefish, and 38,059 ± 4,846 other species.

Download or read book Sonar Estimation of Salmon Passage in the Yukon River Near Pilot Station 2013 written by Kyle Schumann and published by . This book was released on 2017 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Pilot Station sonar project has provided daily passage estimates for Chinook (Oncorhynchus tshawytscha), chum (O. keta), and coho (O. kisutch) salmon for most years since 1986. Fish passage estimates for each species were generated in 2013 through a 2-component process: (1) estimation of total fish passage with 120 kHz split-beam sonar and a dual-frequency identification sonar, and (2) apportionment to species by sampling with a suite of gillnets of various mesh sizes. An estimated 4,700,423 fish passed through the sonar sampling area between June 13 and September 7. Of those fish, 1,107,859 passed along the right bank and 3,592,564 passed along the left bank. Included, with 90% confidence intervals, were 105,433 ± 31,754 large Chinook salmon (>655 mm mid eye to tail fork), 11,726 ± 5,862 small Chinook salmon (less than or equal to 655 mm mid eye tail fork), 2,747,218 ± 119,519 summer chum salmon, 716,727 ± 77,556 fall chum salmon, 84,795 ± 20,744 coho salmon, 4,624 ± 6,361 pink salmon, and 1,029,900 ± 79,741 other species.