Download or read book Estimation of Rock Island Project Survival for Yearling Chinook Salmon Smolts in 2001 Using PIT tag Release recapture Methods written by J. R. Skalski and published by . This book was released on 1999 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Estimation of Survival of Yearling Chinook Salmon Smolts at the Rock Island Dam Pool and Project in 2002 Using Acoustic and PIT tag Release recapture Methods written by J. R. Skalski and published by . This book was released on 1999 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aquatic Telemetry written by COISPA tecnologia & ricerca and published by Food & Agriculture Org.. This book was released on 2005 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Fifth Conference on Fish Telemetry held in Europe, organized by COISPA Tecnologia & Ricerca in June 2003, brought together researchers and fisheries biologists involved in telemetry (the remote measurement of biological variables) and biotelemetry studies on marine and freshwater ecosystems. The central theme of the conference was the interdisciplinary approach to provide the scientific basis for the conservation and rational management of natural resources. This Conference has particular relevance for all those involved in the field if fish ecology, aquaculture and fisheries management.
Download or read book An Assessment of Smolt Survival at Wanapum and Priest Rapids Projects Using PIT tagged Yearling Chinook Salmon Smolts in 2001 written by J. R. Skalski and published by . This book was released on 2001 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Assessment of Project Pool and Dam Survival for Chinook and Steelhead Smolts at Rocky Reach and Rock Island Dams Using Radiotelemetry and PIT tag Techniques 2000 written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Canadian Journal of Fisheries and Aquatic Sciences written by and published by . This book was released on 2002 with total page 980 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Survival Estimates for the Passage of Juvenile Chinook Salmon Through Snake River Dams and Reservoirs 1993 Annual Report written by and published by . This book was released on 1994 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: A pilot study was conducted to estimate survival of hatchery-reared yearling chinook salmon through dams and reservoirs on the Snake River. The goals of the study were to: (1) field test and evaluate the Single-Release, Modified-Single-Release, and Paired-Release Models for the estimation of survival probabilities through sections of a river and hydroelectric projects; (2) identify operational and logistical constraints to the execution of these models; and (3) determine the usefulness of the models in providing estimates of survival probabilities. Field testing indicated that the numbers of hatchery-reared yearling chinook salmon needed for accurate survival estimates could be collected at different areas with available gear and methods. For the primary evaluation, seven replicates of 830 to 1,442 hatchery-reared yearling chinook salmon were purse-seined from Lower Granite Reservoir, PIT tagged, and released near Nisqually John boat landing (River Kilometer 726). Secondary releases of PIT-tagged smolts were made at Lower Granite Dam to estimate survival of fish passing through turbines and after detection in the bypass system. Similar secondary releases were made at Little Goose Dam, but with additional releases through the spillway. Based on the success of the 1993 pilot study, the authors believe that the Single-Release and Paired-Release Models will provide accurate estimates of juvenile salmonid passage survival for individual river sections, reservoirs, and hydroelectric projects in the Columbia and Snake Rivers.
Download or read book The Design and Analysis of Salmonid Tagging Studies in the Columbia Basin written by Jose.́ Perez-Comas and published by . This book was released on 2000 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Registers van den burgerlijken stand berustende in het rijksarchief dep t in Zeeland written by and published by . This book was released on 1890 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Study to Estimate Route specific Survival and Passage Probabilities of Chinook Salmon and Steelhead Smolts at Rock Island Dam 2000 written by and published by . This book was released on 2001 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Design and Analysis of Salmonid Tagging Studies in the Columbia Basin Volume XIII Appraisal of System Wide Survival Estimation of Snake River Yearling Chinook Salmon Released in 1997 and 1988 Using PIT Tags Recovered from Caspian Tern and Double Crested Cormorant Breeding Colonies on Rice Island 1997 1998 Technical Report written by and published by . This book was released on 2000 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: PIT-tags recovered from tern and cormorant breeding colonies at Rice Island and observations from the interrogation systems at John Day and Bonneville Dams were incorporated into survival analyses. Whether the estimates for the upper reaches of the system, between Lower Granite and McNary Dams were as expected (with weighted averages S{sub LGR-LGS} = 0.996, S{sub LGS-LMN} = 0.837, and S{sub LMN-McN} = 0.941), those for the lower reaches, between John Day and Bonneville Dams, appeared positively biased with survival estimates typically greater than 1. Their weighted averages were S{sub McN-JDA} = 0.707 and S{sub JDA-BON} = 1.792 for 1997 releases. For the 1998 releases, they were S{sub McN-JDA} = 0.795 and S{sub JDA-BON} = 1.312. If the estimates for the lower reaches were biased, the estimates for the whole project would also be biased (S{sub LGR-BON} = 0.819). We determined that bias could have arisen if the terns and cormorants of Rice Island fished for salmon yearlings in waters of the BON-Rice reach at low rates (M{sub BON-Rice} (less-than or equal to) 0.2), and the rates of tag-deposition and tag-detection were low (R{sub D} x R{sub R} (less-than or equal to) 0.4). Moreover, unknown levels of uncensored post-detection mortality and scavenging of previously dead salmon yearlings may have also added to the bias.
Download or read book Survival Estimates for the Passage of Yearling Fall Chinook Salmon Through Rocky Reach and Rock Island Dams 1998 written by M. Brad Eppard and published by . This book was released on 1999 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Design and Analysis of Salmonid Tagging Studies in the Columbia Basin written by Alan B. Lowther and published by . This book was released on 1997 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This report describes the extension of release-recapture theory to the analysis of fall subyearling chinook salmon with a new model that includes not only spring survival but also the probabilities of smolt residualizing and surviving over winter."--Preface, p.ii.
Download or read book Evaluation of Factors Affecting Collection Efficiency Estimates of Chinook Salmon and Steelhead Smolts at McNary Dam 1989 Final Report written by and published by . This book was released on 1995 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: Populations of salmonid smolts migrating through the hydropower system on the Columbia River incur some rate of mortality at each dam. To set priorities on options to minimize losses and provide safe passage of the smolts at dams, estimates of smolt survival at each dam are necessary. Two methods have been developed to obtain these survival estimates: the direct and the indirect method. With the indirect method, a test group of fish is released upstream and a-control group is released downstream from the area of interest. With the direct method, a single release of fish above the area of interest is used, with subsequent recovery below the area of interest. In 1988, the National Marine Fisheries Service (NMFS) began a 2-year study at McNary Dam to address possible sources of variation associated with the direct method of obtaining survival estimates. Five study objectives were established to determine whether (1) fish from the Columbia and Snake Rivers mixed as they migrated to McNary Dam (release-location tests); (2) collection rates for Columbia and Snake River stocks were the same (river-of-origin tests); (3) test-group release timing influenced recovery rates (time-of-release tests); (4) a collection-rate bias existed from use of test fish previously guided and collected at the recovery site (tests of previously guided fish); and (5) recovery rates obtained with PIT-tagged fish were comparable to those previously obtained with freeze-branded fish (PIT-tag vs. freeze-brand technology).
Download or read book Estimation of Smolt Production and Harvest of Stikine River Chinook Salmon 2022 2024 written by Kristin Courtney and published by . This book was released on 2022 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary goals of this study are to estimate a) the number of Chinook salmon Oncorhynchus tshawytscha smolt (=50 mm FL) leaving the Stikine River yearly from 2022 to 2024, and b) the mean length and weight of Chinook salmon smolt leaving the Stikine River annually. Additional objectives include estimating the marine harvest and marine survival of adult Chinook salmon returning to the Stikine River from the 2020–2022 brood years and estimating the length and weight of coho salmon Oncorhynchus kisutch smolt that are captured during their outmigration. A modified Petersen 2-event mark–recapture project will be conducted to estimate smolt abundance, and a coded wire tag (CWT) project relying on harvest sampling programs will be conducted to estimate harvest. Length and weight data will be collected during the CWT and event 1 smolt tagging project. Chinook salmon smolt will be marked with adipose fin clips and CWTs each spring. Marked fish will be recaptured through creel, port, and escapement sampling procedures. The Stikine River is 1 of 12 statewide Chinook salmon indicator stocks monitored by the Alaska Department of Fish and Game (ADF&G) and is both an escapement and exploitation indicator stock for the Pacific Salmon Commission (Chinook Research Team 2013, CTC 2021). ADF&G and Fisheries and Oceans Canada (DFO) use these data, along with adult escapement information (described in a separate operational plan), to make terminal and regional management decisions, and the PSC uses these data for coastwide management and stock assessment through the Transboundary and Chinook Technical Committees.
Download or read book Survival Estimates for the Passage of Juvenile Salmonids Through Snake and Columbia River Dams and Reservoirs 2002 2003 Annual Report written by Steven G. Smith and published by . This book was released on 2003 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 2002, the National Marine Fisheries Service and the University of Washington completed the tenth year of a study to estimate survival and travel time of juvenile salmonids (Oncorhynchus spp.) passing through dams and reservoirs on the Snake and Columbia Rivers. All estimates were derived from detections of fish tagged with passive integrated transponder tags (PIT tags). We PIT tagged and released a total of 19,891 hatchery steelhead at Lower Granite Dam. In addition, we utilized fish PIT tagged by other agencies at traps and hatcheries upstream from the hydropower system and sites within the hydropower system. PIT-tagged smolts were detected at interrogation facilities at Lower Granite, Little Goose, Lower Monumental, McNary, John Day, and Bonneville Dams and in the PIT-tag detector trawl operated in the Columbia River estuary. Survival estimates were calculated using a statistical model for tag-recapture data from single release groups (the ''Single-Release Model''). Primary research objectives in 2002 were to (1) estimate reach and project survival and travel time in the Snake and Columbia Rivers throughout the migration period of yearling chinook salmon O. tshawytscha and steelhead O. mykiss; (2) evaluate relationships between survival estimates and migration conditions; and (3) evaluate the survival-estimation models under prevailing conditions. This report provides reach survival and travel time estimates for 2002 for PIT-tagged yearling chinook salmon (hatchery and wild), hatchery sockeye salmon O. nerka, hatchery coho salmon O. kisutch, and steelhead (hatchery and wild) in the Snake and Columbia Rivers. Results are reported primarily in the form of tables and figures; details on methodology and statistical models used are provided in previous reports cited here. Results for summer-migrating chinook salmon will be reported separately.
Download or read book Rolle f r die Gesellen des B ckeramts zu Wismar von 1750 written by Wismar and published by . This book was released on 1832 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
