Download or read book Estimation of Chum Salmon Abundance Migration Timing and Spawning Distribution in the Fish River Complex Norton Sound Alaska 2002 2004 written by Gary L. Todd and published by . This book was released on 2005 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Estimation of Chum Salmon Abundance and Spawning Distribution in the Fish River Complex 2002 written by Gary L. Todd and published by . This book was released on 2004 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Chum salmon were seined in the lower Fish River for biological sampling and 100 radio tags were deployed. Mark-recapture methodology, using Niukluk River counting tower as recapture location was used to estimate total chum salmon abundance in the Fish River"--P. vi.
Download or read book Abundance Distribution and Migration Patterns of Summer Chum Salmon in the Yukon River Drainage 2014 2015 written by Sean Larson and published by . This book was released on 2017 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Summer chum salmon (Oncorhynchus keta) in the Yukon River support robust commercial and subsistence fisheries; however, fishery managers have had incomplete information about their run timing, spawning distribution, stock composition, and abundance. To address this, a radiotelemetry study was implemented on summer chum salmon in 2014 and 2015. A total of 1,232 (2014) and 1,199 (2015) summer chum salmon were fitted with radio transmitters. Radiotagged summer chum salmon were mapped, travel rates were estimated, and proportions of tagged fish recovered within different tributaries were determined. Basic mark-recapture assumptions were tested and abundance above the tagging site was estimated. Summer chum salmon were found to be widely distributed within the Yukon River drainage. Although a few tagged fish were observed in most locations, roughly 50% of tagged fish were observed in the Anvik, Koyukuk, and Bonasila rivers each year. Summer chum salmon destined for upper river spawning areas traveled faster than those to lower river areas. Summer chum salmon tended to recover quickly after being tagged, and traveled relatively fast within the mainstem Yukon River, but slowed down after entering their spawning tributaries. The 2014 mark-recapture abundance estimate was about 2,100,000 fish, which corresponded with summer chum salmon passage at the mainstem Yukon River sonar near Pilot Station. The 2015 mark-recapture abundance estimate was also about 2,100,000 fish, which was larger than the summer chum salmon passage at the sonar near Pilot Station. Results from this study help to evaluate sonar passage estimates and provide fishery managers with more detailed information about distribution and migratory patterns of individual summer chum salmon stocks within the Yukon River drainagewide population.
Download or read book Coastal Migration Characteristics and Spawning Distribution of Chum and Coho Salmon in Eastern Norton Sound Fisheries written by Luke Henslee and published by . This book was released on 2020 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Historical research and local knowledge suggest that salmon vulnerable to harvest by fisheries in Subdistricts 5 and 6 of the Norton Sound management area represent a mixed stock, with unique populations migrating through marine waters and into spawning streams throughout the area and beyond. Incomplete understanding of salmon harvest composition and migration characteristics in Norton Sound has constrained managers’ ability to direct stock-specific persecution of fisheries. Consequently, fisheries in Subdistricts 5 and 6 are managed as a single unit and salmon are assigned to stocks based on the subdistrict in which they were harvested. This strategy has raised concern among local stakeholders that proportional harvest rates are being obscured and salmon caught in Subdistricts 5 and 6 could be bound for spawning streams in other subdistricts in the Norton Sound area. This project will use acoustic telemetry to address the critical management assumption that chum and coho stocks vulnerable to harvest in Subdistricts 5 and 6 are bound for spawning streams within those subdistricts and should be managed concurrently. This project will attempt to mimic the timing and location of nearshore salmon fisheries in Subdistricts 5 and 6 to tag chum and coho salmon such that the tagged fish are reasonably representative of the available mixed stocks. Sequential acoustic detection of tagged salmon by coastal marine and inriver hydrophone receivers will be used to estimate the spawning distribution of mixed stocks and describe spatiotemporal characteristics of nearshore migration. Results of this project are intended to inform management decisions by clarifying salmon stocks available for harvest in subdistricts 5 and 6 and stock-specific migration characteristics through those subdistricts so that stocks with harvestable surpluses can be targeted while minimizing impacts to less productive stocks.
Download or read book Estimation of Abundance and Distribution of Chum Salmon in the Unalakleet River Drainage 2004 written by Jeffrey L. Estensen and published by . This book was released on 2005 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synopsis of Biological Data on the Chum Salmon Oncorhynchus Keta Walbaum 1792 written by Richard G. Bakkala and published by . This book was released on 1970 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fecundity of Chum and Coho Salmon from Two Rivers in Norton Sound Alaska written by Matthew J. Nemeth and published by . This book was released on 2005 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fecundity (the number of eggs produced by a female fish) was measured for chum and coho salmon in the Unalakleet River in 2002, 2003, and 2004 and for chum salmon in the Fish River (which empties into Golovin Bay) in 2004. Fecundity was related to each year, other regions, body length, run timing, fish age, and standard size.
Download or read book The Length Age and Sex Ratio of Chum Salmon in the Alaska Peninsula Kodiak Island and Prince William Sound Areas of Alaska written by Fredrik V. Thorsteinson and published by . This book was released on 1963 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Abundance and Spawning Distribution of Susitna River Chum Oncorhynchus Keta and Coho O Kisutch Salmon 2011 written by Peter Mallon Cleary and published by . This book was released on 2016 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 2009, the Alaska Department of Fish and Game began a 4-year spawning distribution and abundance estimation study in response to concerns over the status of the Susitna River chum (Oncorhynchus keta) and coho (O. kisutch) salmon stocks. This report summarizes results of mark-recapture abundance and distribution assessments completed during 2011. Four fish wheels were used to capture and tag chum and coho salmon with dart tags at river mile (RM) 22 in the Susitna River in July and August 2011. Two fish wheels were used at RM 7 in the Yentna River and 2 fish wheels were used at RM 34 in the mainstem Susitna River to sample salmon for tags. Estimated abundance of chum salmon was 1,473,969 (SE 123,933) fish for the mainstem Susitna River and 278,063 (SE 42,780) fish for the Yentna River. Estimated abundance of coho salmon was 131,878 (SE 24,146) fish for the mainstem Susitna River and 84,677 (SE 9,981) fish for the Yentna River. A total of 734 radio tags were placed in chum and coho salmon. Their movements were tracked using 6 ground tracking stations, 7 aerial surveys of the mainstem Susitna River, 6 aerial surveys of the Yentna River, and 3 drainagewide aerial surveys. All but 31 of the radio tags were relocated and 635 (86.5%) were assigned a putative spawning location. Both chum and coho salmon exhibited bank orientation at the tagging site.
Download or read book Abundance and Run Timing of Adult Salmon in Henshaw Creek Kanuti National Wildlife Refuge Alaska 2002 written by Gareth K. VanHatten and published by . This book was released on 2003 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reports run size, timing, age, sex ratios, and length distributions for chinook and summer chum salmon spawning populations within the Henshaw Creek drainage, a tributary of the Koyukuk River.
Download or read book Abundance and Spawning Distribution of Susitna River Chum Onchorhynchus Keta and Coho O Kisutch Salmon 2012 written by Peter Mallon Cleary and published by . This book was released on 2016 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 2009, the Alaska Department of Fish and Game began a 4-year spawning distribution and abundance estimation study in response to concerns over the status of the Susitna River chum (Oncorhynchus keta) and coho (O. kisutch) salmon stocks. This report summarizes results of mark-recapture abundance and distribution assessments completed during 2012. Four fish wheels were used at river mile (RM) 22 in the Susitna River to capture and tag chum and coho salmon with dart tags in July and August 2012. Two fish wheels were used at RM 6 in the Yentna River and 2 fish wheels were used at RM 34 in the mainstem Susitna River to sample salmon for tags. Estimated spawning abundance of chum salmon was 229,903 (SE 155,193) fish for the mainstem Susitna River and 99,442 (SE 84,876) fish for the Yentna River. Estimated spawning abundance of coho salmon was 90,397 (SE 36,701) fish for the mainstem Susitna River and 93,919 (SE 10,688) fish for the Yentna River. A total of 799 radio tags were placed in chum and coho salmon. Their movements were tracked using 10 ground tracking stations, 15 aerial surveys of the mainstem Susitna River, 6 aerial surveys of the Yentna River, and 2 drainagewide aerial surveys. All but 50 of the radio tags were relocated, and 716 (89.6%) were assigned a putative spawning location. Both chum and coho salmon exhibited bank orientation at the tagging site.
Download or read book Estimation of Abundance and Distribution of Chum Salmon Oncorhynchus Keta in the Unalakleet River Drainage 2005 written by Jeffrey L. Estensen and published by . This book was released on 2007 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document reports on the second of a 3-year project using radiotelemetry mark and recapture methods to determine the proportion of chum salmon, Oncorhynchus keta, migrating into North River and above a proposed weir site on Unalakleet River, and to estimate total Unalakleet drainage abundance.
Download or read book Fecundity of Chum and Coho Salmon from the Unalakleet River Alaska 2002 Annual Report written by Matthew J. Nemeth and published by . This book was released on 2003 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fecundity (the number of eggs produced by a female fish) of chum and coho salmon returning to the Unalakleet River was measured to determine initial fecundity estimates for the Norton Sound region. Unalakleet River chum and coho salmon had high actual fecundities compared to populations reported in literature, and coho salmon had high relative fecundities after accounding for body length.
Download or read book Estimation of Abundance and Mortality of Emigrating Chum Salmon and Chinook Salmon in the Chena River Alaska written by Brent David Peterson and published by . This book was released on 1997 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Estimation of Chinook Salmon Abundance and Spawning Distribution in the Unalakleet River 2009 written by Philip John Joy and published by . This book was released on 2014 with total page 42 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 Estimation of Chinook Salmon Abundance and Spawning Distribution in the Unalakleet River 2010 written by Philip John Joy and published by . This book was released on 2014 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
