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Book Synopsis Idaho Adult Chinook Salmon Monitoring 2019 Annual Report by : Eli Felts
Download or read book Idaho Adult Chinook Salmon Monitoring 2019 Annual Report written by Eli Felts and published by . This book was released on 2020 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Idaho Natural Production Monitoring and Evaluation Project monitors the status of Snake River spring-summer Chinook Salmon Oncorhynchus tshawytscha populations in the Salmon River and Clearwater River basins. Annual single-pass redd counts and carcass surveys are conducted at index transects and provide estimates of relative abundance and productivity of Chinook Salmon. These surveys are conducted annually to document temporal trends in relative abundance and productivity. In 2019, a total of 535 redds were counted at 104 transects covering 1,250 km, 27 populations, and 5 major population groups. With few exceptions, relative abundance in 2019 was lower than in 2018 and the lowest in the most recent 5-year era. Relative abundance has decreased in many Idaho populations since 2014. The brood year 2015 cohort, represented by age-4 fish on the spawning grounds in 2019, was the most common among all age classes observed. Adult-to-adult productivity estimates for the brood year 2014 cohort are now complete, and were less than 1 recruit per spawner for every population.
Book Synopsis Idaho Adult Chinook Salmon Monitoring 2020 Annual Report by : Cynthia I. Nau
Download or read book Idaho Adult Chinook Salmon Monitoring 2020 Annual Report written by Cynthia I. Nau and published by . This book was released on 2021 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: [Chapter two] Intensive monitoring of redd distribution has been conducted in the Middle Fork Salmon River basin since 1995 to better understand spawning distribution of Chinook Salmon Oncorhynchus tshawytscha. In 2020, approximately 752 km of Chinook Salmon spawning habitat was surveyed for redds by air and ground, and a total of 467 redds were identified. These surveys cover approximately 260 km of Chinook Salmon Spawning that is not included in IDFG index transects. Basinwide redd counts increased from 2019 but were still well below the 1995-2019 average.
Book Synopsis Idaho Anadromous Emigrant Monitoring by : Stacey F. Feeken
Download or read book Idaho Anadromous Emigrant Monitoring written by Stacey F. Feeken and published by . This book was released on 2020 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt: During 2019, Idaho Department of Fish and Game monitored emigration of wild juvenile Chinook Salmon and steelhead at ten rotary screw traps in the Salmon River basin and five in the Clearwater River basin. Estimated abundance of Chinook Salmon emigrants varied from 8,212 to 128,607 fish in the Salmon basin (n = 9 traps) and was 2,526 fish at Crooked River trap, the only trap in the Clearwater River basin where an estimate for Chinook Salmon was possible. Estimated abundance of Chinook Salmon for the BY2017 cohort (trapped during 2018 and spring 2019) varied from 2,086 to 8,949 fish in the Salmon River basin (n = 9 traps) and was 305 fish at the Crooked River trap. Estimated abundance of steelhead emigrants in 2019 varied from 944 to 18,870 fish in the Salmon River basin (n = 9 traps) and from 283 to 6,864 fish in the Clearwater River basin (n = 4 traps). For both species, emigrant estimates are paired with adult spawner estimates. We present adult-to-juvenile productivity for both species where data were available. Estimated adult-to-juvenile productivity of Chinook Salmon at trapping locations for BY2017 varied from 126 to 2,567 emigrants per female spawner in the Salmon River basin (n = 10 traps) and 306 emigrants per female spawner at Crooked River. Chinook productivity of smolts to Lower Granite Dam for BY2017 varied from 51 to 1,112 smolts per female spawner from the Salmon River basin (n = 10 traps) and 184 smolts per female spawner from Crooked River. Steelhead productivity at trapping locations from BY2014 varied from 0 to 714 emigrants per female in the Salmon River basin (n = 6 traps) and from 0 to 501 emigrants per female in the Clearwater River basin (n = 4 traps). Differences in productivity among populations within major population groups as well as differences among major population groups was observed along with density dependence, with fewer juveniles per female surviving as female abundance increased. The pairing of adult and juvenile abundance data provided insight into the variation in habitat and stock characteristics for Chinook Salmon and steelhead trout populations throughout Idaho. Information gathered helps support recreational fisheries and guides the implementation of future habitat restoration projects.
Book Synopsis Idaho Adult Chinook Salmon Monitoring 2021 Annual Report by : Cynthia I. Nau
Download or read book Idaho Adult Chinook Salmon Monitoring 2021 Annual Report written by Cynthia I. Nau and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Idaho Adult Chinook Salmon Monitoring 2018 Annual Report by : Eli Felts
Download or read book Idaho Adult Chinook Salmon Monitoring 2018 Annual Report written by Eli Felts and published by . This book was released on 2019 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Idaho Adult Chinook Salmon Monitoring 2022 Annual Report by : Jacob S. Ruthven
Download or read book Idaho Adult Chinook Salmon Monitoring 2022 Annual Report written by Jacob S. Ruthven and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Historically, Idaho waters supported abundant, naturally reproducing Chinook Salmon Oncorhynchus tshawytscha runs, which represented an important cultural, economic, and recreational resource within the state (Fulton 1968; Chapman 1986). Adult spring-run, summer-run, and fall-run Chinook Salmon migrate through the Columbia River and enter Idaho via the Snake River. Fall-run Chinook Salmon are currently monitored in Idaho by Idaho Power Company and the Nez Perce Tribe. As such, this report is exclusively focused on spring-summer Chinook Salmon.
Book Synopsis Idaho Adult Chinook Salmon Monitoring 2017 Annual Report by : Eli Felts
Download or read book Idaho Adult Chinook Salmon Monitoring 2017 Annual Report written by Eli Felts and published by . This book was released on 2018 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Idaho Adult Chinook Salmon Monitoring by : Matthew J. Belnap
Download or read book Idaho Adult Chinook Salmon Monitoring written by Matthew J. Belnap and published by . This book was released on 2017 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Idaho Adult Chinook Salmon Monitoring by : Carl Stiefel
Download or read book Idaho Adult Chinook Salmon Monitoring written by Carl Stiefel and published by . This book was released on 2016 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Idaho Anadromous Emigrant Monitoring by : Conor McClure
Download or read book Idaho Anadromous Emigrant Monitoring written by Conor McClure and published by . This book was released on 2021 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt: During 2020, Idaho Department of Fish and Game monitored emigration of wild juvenile Chinook Salmon and steelhead at ten rotary screw traps in the Salmon River basin and five in the Clearwater River basin. Estimated calendar year abundance of Chinook Salmon emigrants varied from 7,733 to 144,835 fish in the Salmon basin (n = 9 traps). In the Clearwater River basin, no estimates for Chinook Salmon were made due to low numbers of fish captured at only two of the five traps. Estimated abundance of Chinook Salmon for the BY2018 cohort (trapped during 2019 and spring 2020) varied from 8,094 to 128,901 fish in the Salmon River basin (n = 9 traps) and was 2,221 fish at the Crooked River trap. Estimated abundance of steelhead emigrants in 2020 varied from 932 to 31,446 fish in the Salmon River basin (n = 9 traps) and from 672 to 42,851 fish in the Clearwater River basin (n = 5 traps). We present adult-to-juvenile productivity for both species where data were available. Chinook productivity of smolts to Lower Granite Dam for BY2018 varied from 40 to 382 smolts per female spawner from the Salmon River basin (n = 9 traps) and no estimate from Crooked River as no redds were observed in 2020. Steelhead productivity at trapping locations from BY2015 varied from 38 to 624 emigrants per female in the Salmon River basin (n = 7 traps) and from 124 to 451 emigrants per female in the Clearwater River basin (n = 4 traps). Differences in productivity among populations within major population groups as well as differences among major population groups were observed along with density dependence, with fewer juveniles per female surviving as female abundance increased. The pairing of adult and juvenile abundance data provided insight into the variation in habitat and stock characteristics for Chinook Salmon and steelhead populations throughout Idaho.
Book Synopsis Escapement Monitoring of Adult Chinook Salmon in the Secesh River and Lake Creek, Idaho, 1998 Annual Report by :
Download or read book Escapement Monitoring of Adult Chinook Salmon in the Secesh River and Lake Creek, Idaho, 1998 Annual Report written by and published by . This book was released on 2000 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stein Victor (1852-1935). written by and published by . This book was released on 1872 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Zeitungsausschnitte.
Book Synopsis Natural Production Monitoring and Evaluation ; Idaho Department of Fish and Game, 2000-2001 Annual Report by :
Download or read book Natural Production Monitoring and Evaluation ; Idaho Department of Fish and Game, 2000-2001 Annual Report written by and published by . This book was released on 2001 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report covers efforts to monitor age composition of wild adult spring/summer chinook salmon returning to the Snake River Basin. Accurately determining the ocean age proportions of wild adult spring/summer chinook salmon is important information for monitoring the status and trends of these species. During this report period, project personnel selected the preferred structure for aging, set up a database to track all samples collected, developed procedures and ordered equipment for structure preparation and reading, and aged the adults that were sampled in 1999. Chinook salmon carcasses were sampled from representative spawning areas throughout the Snake River Basin. Ocean age proportions were determined for each 5 centimeter fork length group for wild adult spring/summer chinook salmon returning to the Snake River. These ocean age proportions were applied to the number and estimated length frequency distribution of wild chinook salmon adults passing Lower Granite Dam to estimate the number of adult returns for each ocean age group.
Book Synopsis Adult Chinook Salmon Abundance Monitoring in the Secesh River and Lake Creek, Idaho, 2000 Annual Report by :
Download or read book Adult Chinook Salmon Abundance Monitoring in the Secesh River and Lake Creek, Idaho, 2000 Annual Report written by and published by . This book was released on 2001 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt: Underwater time-lapse video technology has been used to monitor adult spring and summer chinook salmon (Oncorhynchus tshawytscha) escapement into the Secesh River and Lake Creek, Idaho, since 1998. Underwater time-lapse videography is a passive methodology that does not trap or handle this Endangered Species Act listed species. Secesh River chinook salmon represent a wild spawning aggregate that has not been directly supplemented with hatchery fish. The Secesh River is also a control population under the Idaho Salmon Supplementation study. This project has demonstrated the successful application of underwater video adult salmon abundance monitoring technology in Lake Creek in 1998 and 1999. Emphasis of the project in 2000 was to determine if the temporary fish counting station could be installed early enough to successfully estimate adult spring and summer chinook salmon abundance in the Secesh River (a larger stream). Snow pack in the drainage was 93% of the average during the winter of 1999/2000, providing an opportunity to test the temporary count station structure. The temporary fish counting station was not the appropriate technology to determine adult salmon spawner abundance in the Secesh River. Due to its temporary nature it could not be installed early enough, due to high stream discharge, to capture the first upstream migrating salmon. A more permanent structure used with underwater video, or other technology needs to be utilized for accurate salmon escapement monitoring in the Secesh River. A minimum of 813 adult chinook salmon spawners migrated upstream past the Secesh River fish counting station to spawning areas in the Secesh River drainage. Of these fish, more than 324 migrated upstream into Lake Creek. The first upstream migrating adult chinook salmon passed the Secesh River and Lake Creek sites prior to operation of the fish counting stations on June 22. This was 17 and 19 days earlier than the first fish arrival at Lake Creek in 1998 and 1999 respectively. Peak net upstream adult movement at the Secesh River site occurred June 28 and at the Lake Creek site on June 27. Peak of total movement was August 16 at Secesh River and August 7 at Lake Creek. The last fish passed through the Lake Creek fish counting station on August 31 and on September 8 at the Secesh River site. Migrating salmon in the Secesh River and Lake Creek exhibited two behaviorally distinct segments of fish movement. The first segment of movement was characterized, mainly, by upstream movement only. The second segment consisted of upstream and downstream movement with very little net upstream movement. The fish counting stations did not impede salmon movements, nor was spawning displaced downstream. Fish moved freely upstream and downstream through the fish counting structures. Fish movement was greatest between the period of 5:00 p.m. and 4:00 a.m. There appeared to be a segment of ''nomadic'' males that moved into and out of the spawning area, apparently seeking other mates to spawn with. The downstream movement of salmon allowed by this fish counting station design may be an important factor affecting reproductive success as male salmon seek other females to spawn with. Traditional weirs operated for broodstock collection do not allow for downstream movement of adults. This methodology has the potential to provide more consistent and accurate salmon spawner abundance information than single-pass and multiple-pass spawning ground surveys. Accurate adult abundance would allow managers to determine if recovery actions were benefiting these salmon spawning aggregates and if recovery goals were being met.
Book Synopsis Idaho Anadromous Emigrant Monitoring by : Amber N. Young
Download or read book Idaho Anadromous Emigrant Monitoring written by Amber N. Young and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: During 2022, Idaho Department of Fish and Game monitored emigration of wild juvenile Chinook Salmon Oncorhynchus tshawytscha and steelhead O. mykiss at ten rotary screw traps(RST) in the Salmon River basin and five in the Clearwater River basin. In the Salmon basin, with the exception of Rapid River where abundance could not be estimated, total estimated abundance of Chinook Salmon emigrants varied from 2,606 to 137,104 fish (n = 9). In the Clearwater River basin, abundance of Chinook Salmon emigrants could only be estimated for spring age-1 fish at the Crooked River RST (663 fish) and for spring age-1 and fall age-0 fish at the Lochsa River RST (4,530 fish). Abundance of juvenile steelhead emigrants were estimated for at least one trapping period for all RSTs that operated in 2022. Total abundance estimates of juvenile steelhead varied from 1,493 to 26,573 fish in the Salmon River basin and from 823 to 30,554 fish in the Clearwater River basin. Productivity of juvenile Chinook Salmon emigrants at RSTs and of smolts that survived to Lower Granite Dam (LGR) were estimated at all RSTs except the Rapid River site in the Salmon River basin and could not be estimated at any RST sites in the Clearwater River basin. Productivity of Chinook juveniles in the Salmon River basin at RSTs for brood year(BY) 2020 varied from 201 emigrants per female spawner in the Lemhi River to 1,736 emigrants per female spawner in Big Creek. Productivity of smolts from the Salmon River basin at LGR forBY2020 varied from 13 smolts per female spawner from Hayden Creek to 835 smolts per female spawner from Big Creek. Juvenile steelhead productivity for BY2017 at trapping sites in the Salmon River basin varied from 76 emigrants per female spawner in the lower Lemhi River to 554emigrants per female spawner in the upper Lemhi River. Juvenile steelhead productivity forBY2017 in the Clearwater River basin varied from 138 emigrants per female spawner in Fish Creek to 959 emigrants per female spawner in East Fork Potlatch River. Productivity of juvenile steelhead from Crooked River could not be estimated for BY 2017. The pairing of adult and juvenile abundance data provided insight into the variation in habitat and stock characteristics for Chinook Salmon and steelhead populations throughout Idaho.
Book Synopsis IPC and LSRCP Monitoring and Evaluation Programs in the State of Idaho by : Matthew J. Belnap
Download or read book IPC and LSRCP Monitoring and Evaluation Programs in the State of Idaho written by Matthew J. Belnap and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report details components of spring-, summer-, and fall-Chinook Salmon monitoring, evaluation, and management activities during calendar year 2019 for hatchery mitigation programs funded by the Lower Snake River Compensation Plan (LSRCP) and Idaho Power Company (IPC). Information is reported for Chinook Salmon from five different hatcheries operated by the Idaho Department of Fish and Game (IDFG) including three (Clearwater, McCall, and Sawtooth hatcheries) owned by LSRCP and two (Pahsimeroi and Rapid River hatcheries) owned by IPC. Data reported includes juvenile production and releases, outmigration survival, adult returns, contribution to fisheries, and returns to hatchery traps.
Book Synopsis Chinook Salmon Adult Abundance Monitoring in Lake Creek, Idaho, 2002 Annual Report by :
Download or read book Chinook Salmon Adult Abundance Monitoring in Lake Creek, Idaho, 2002 Annual Report written by and published by . This book was released on 2003 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: Underwater time- lapse video technology has been used to monitor adult spring and summer chinook salmon (Oncorhynchus tshawytscha) escapement into the Secesh River and Lake Creek, Idaho, since 1998. Underwater time-lapse videography is a passive methodology that does not trap or handle this Endangered Species Act listed species. Secesh River chinook salmon represent a wild spawning aggregate that has not been directly supplemented with hatchery fish. The Secesh River is also a control stream under the Idaho Salmon Supplementation study. This project has successfully demonstrated the application of underwater video monitoring to accurately quantify chinook salmon abundance in Lake Creek in 1998, 1999, 2001 and 2002. The adult salmon spawner escapement into Lake Creek in 2002 was 410 fish. Jack salmon comprised 7.1 percent of the run. Estimated hatchery composition was 6.1 percent of the spawning run. The first fish passage on Lake Creek was recorded on June 26, 15 days after installation of the fish counting station. Peak net upstream movement of 41 adults occurred on July 8. Peak of total movement activity was August 18. The last fish passed through the Lake Creek fish counting station on September 2. Snow pack in the drainage was 91% of the average during the winter of 2001/2002. Video determined salmon spawner abundance was compared to redd count expansion method point estimates in Lake Creek in 2002. Expanded index area redd count and extensive area redd count point estimates in 2002, estimated from one percent fewer to 56 percent greater number of spawners than underwater video determined spawner abundance. Redd count expansion methods varied from two percent fewer to 55 percent greater in 2001, 11 to 46 percent fewer in 1999 and 104 to 214 percent greater in 1998. Redd count expansion values had unknown variation associated with the point estimates. Fish per redd numbers determined by video abundance and multiple pass redd counts of the larger extensive survey areas in Lake Creek have varied widely. In 2002 there were 2.05 fish per redd. There were 2.07 fish per redd in 2001, 3.58 in 1999 and in 1998, with no jacks returning to spawn, there were 1.02 fish per redd. Migrating salmon in Lake Creek exhibited two behaviorally distinct segments of fish movement in 2002. Mainly upstream only movement of both sexes characterized the first segment. The second segment consisted of upstream and downstream movement with less net upstream movement and appeared to correspond with the time of active spawning. The fish counting stations did not impede salmon movements, nor was spawning displaced downstream. Fish moved freely upstream and downstream through the fish counting structures. The downstream movement of salmon afforded by this fish counting station design may be an important factor in the reproductive success of listed salmon. This methodology provides more accurate salmon spawner abundance information than expansion of single-pass and multiple-pass redd counts. Accurate adult escapement information would allow managers to determine if recovery actions benefited listed chinook salmon in tributary streams.
