Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Fall Chinook Salmon Survival And Supplementation Studies In The Snake River And Lower Snake River Reservoirs 1995 Annual Report
Download Fall Chinook Salmon Survival And Supplementation Studies In The Snake River And Lower Snake River Reservoirs 1995 Annual Report full books in PDF, epub, and Kindle. Read online Fall Chinook Salmon Survival And Supplementation Studies In The Snake River And Lower Snake River Reservoirs 1995 Annual Report ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Fall Chinook Salmon Survival and Supplementation Studies in the Snake River and Lower Snake River Reservoirs, 1995. Annual Report, January 1, 1995--December 31, 1995 by :
Download or read book Fall Chinook Salmon Survival and Supplementation Studies in the Snake River and Lower Snake River Reservoirs, 1995. Annual Report, January 1, 1995--December 31, 1995 written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Snake River fall chinook salmon (Oncorhynchus tshawytscha) are listed as threatened under the Endangered Species Act. At present, limited data exist on the migrational characteristics of Snake River subyearling fall chinook salmon, particularly concerning the proportion of migrants that survive passage through the Snake River dams and reservoirs, the effects of flows and temperatures on survival, and the percentage of subyearlings that are guided away from turbines into collection facilities and transported. As a result, operational strategies to maximize survival have been largely based on data from studies of subyearling chinook salmon that pass through lower Columbia River dams. In 1994, the National Marine Fisheries Service and the U.S. Fish and Wildlife Service began a cooperative study to investigate migrational characteristics of subyearling fall chinook salmon in the Snake River. The primary study objectives were to (1) determine the feasibility of estimating detection and pass age survival probabilities of natural and hatchery subyearling fall chinook salmon released in the Snake River (2) investigate relationships. between detection and passage survival probabilities and travel time of subyearling fall chinook salmon and environmental influences such as flow volume and water temperature (3) monitor and evaluate dispersal of hatchery subyearling chinook salmon into nearshore rearing areas used by natural fish and (4) monitor and evaluate travel time to Lower Granite Dam, growth from release in the Snake River to recapture at Lower Granite Dam, ATPase levels of fish recaptured at Lower Granite Dam, and survival from release in the free-flowing Snake River to the tailrace of Lower Granite Dam.
Book Synopsis Fall Chinook Salmon Survival and Supplementation Studies in the Snake River and Lower Snake River Reservoirs, 1995 Annual Report by :
Download or read book Fall Chinook Salmon Survival and Supplementation Studies in the Snake River and Lower Snake River Reservoirs, 1995 Annual Report written by and published by . This book was released on 1997 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1994, the National Marine Fisheries Service and the US Fish and Wildlife Service began a cooperative study to investigate migrational characteristics of subyearling fall chinook salmon in the Snake River. The primary study objectives were to (1) determine the feasibility of estimating detection and passage survival probabilities of natural and hatchery subyearling fall chinook salmon released in the Snake River (Chapter 1), (2) investigate relationships between detection and passage survival probabilities and travel time of subyearling fall chinook salmon and environmental influences such as flow volume and water temperature (Chapter 1), (3) monitor and evaluate dispersal of hatchery subyearling chinook salmon into nearshore rearing areas used by natural fish (Chapter 2), and (4) monitor and evaluate travel time to Lower Granite Dam, growth from release in the Snake River to recapture at Lower Granite Dam, ATPase levels of fish recaptured at Lower Granite Dam, and survival from release in the free-flowing Snake River to the tailrace of Lower Granite Dam (Chapter 2).
Book Synopsis Fall Chinook Salmon Survival and Supplementation Studies in the Snake River and Lower Snake River Reservoirs, 1995 by : John G. Williams
Download or read book Fall Chinook Salmon Survival and Supplementation Studies in the Snake River and Lower Snake River Reservoirs, 1995 written by John G. Williams and published by . This book was released on 1997 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Lower Snake River Juvenile Salmon Migration Feasibility Report by :
Download or read book Lower Snake River Juvenile Salmon Migration Feasibility Report written by and published by . This book was released on 2002 with total page 900 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fall Chinook Salmon Survival and Supplementation Studies in the Snake River and Lower Snake River Reservoirs, 1996 by : John G. Williams
Download or read book Fall Chinook Salmon Survival and Supplementation Studies in the Snake River and Lower Snake River Reservoirs, 1996 written by John G. Williams and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fall Chinook Salmon Survival and Supplementation Studies in the Snake River and Lower Snake River Reservoirs, 1997 Annual Report by :
Download or read book Fall Chinook Salmon Survival and Supplementation Studies in the Snake River and Lower Snake River Reservoirs, 1997 Annual Report written by and published by . This book was released on 1999 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1997, the National Marine Fisheries Service, the U.S. Fish and Wildlife Service, and the Nez Perce Tribe completed the third year of research to investigate migrational characteristics of subyearling fall chinook salmon in the Snake River Basin.
Book Synopsis Fall Chinook Salmon Survival and Supplementation Studies in the Snake River Reservoirs, 1996 Annual Report by :
Download or read book Fall Chinook Salmon Survival and Supplementation Studies in the Snake River Reservoirs, 1996 Annual Report written by and published by . This book was released on 1998 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1996, the National Marine Fisheries Service, the Nez Perce Tribe, and the U.S. Fish and Wildlife Service completed the second year of cooperative research to investigate migrational characteristics of subyearling fall chinook salmon in the Snake River Basin. In spring and early summer, we captured natural subyearling fall chinook salmon by beach seine, PIT tagged them, and released them in two reaches of the Snake River. Also, subyearling fall chinook salmon reared at Lyons Ferry Hatchery were PIT tagged at the hatchery, transported, and released weekly at Pittsburg Landing on the Snake River and Big Canyon Creek on the Clearwater River to collect data on survival detection probabilities, and travel time.
Download or read book Banks Lake Drawdown written by and published by . This book was released on 2004 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis North American Journal of Fisheries Management by :
Download or read book North American Journal of Fisheries Management written by and published by . This book was released on 2000 with total page 1106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Survival Estimates for the Passage of Yearling Chinook Salmon and Steelhead Through Snake River Dams and Reservoirs, 1995 Annual Report by :
Download or read book Survival Estimates for the Passage of Yearling Chinook Salmon and Steelhead Through Snake River Dams and Reservoirs, 1995 Annual Report written by and published by . This book was released on 1996 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt: Documentation is provided for the third of a multiyear study to estimate the survival of juvenile salmonids passing through dams and reservoirs on the Snake River.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1995 with total page 782 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Survival of Hatchery Subyearling Fall Chinook Salmon in the Free-Flowing Snake River and Lower Snake River Reservoirs, 1998-2001 Summary Report by :
Download or read book Survival of Hatchery Subyearling Fall Chinook Salmon in the Free-Flowing Snake River and Lower Snake River Reservoirs, 1998-2001 Summary Report written by and published by . This book was released on 2002 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: We report results from four years (1998-2001) of an ongoing study of survival and travel time of subyearling fall chinook salmon in the Snake River. We report analyses of associations among river conditions and survival and travel time estimates, which include data from 1995 through 1997. At weekly intervals from early June to early July each year (mid-May to late June in 2001), hatchery-reared subyearling fall chinook salmon were PIT tagged at Lyons Ferry Hatchery, trucked upstream, acclimated, and released above Lower Granite Dam at Pittsburgh Landing and Billy Creek on the Snake River and at Big Canyon Creek on the Clearwater River. Each year, a small proportion of fish released were not detected until the following spring. However, the number that overwintered in the river and migrated seaward as yearlings the following spring was small and had minimal effect on survival estimates. Concurrent with our studies, a number of subyearling fall chinook salmon that reared naturally in the Snake River were caught by beach seine, PIT tagged, and released. We compared a number of characteristics of hatchery and wild fish. Hatchery and wild fish were similar in 2001, and from 1995 through 1997. Results for 1998 through 2000 showed some relatively large differences between hatchery and wild fish. However, recent information suggests that a considerable proportion of wild subyearling chinook salmon migrating in a given year may actually be stream-type (spring/summer), rather than ocean-type (fall) fish, which may account for some of the differences we have observed.
Book Synopsis Snake River Fall Chinook Salmon Life History Investigations, Annual Report 2007 by :
Download or read book Snake River Fall Chinook Salmon Life History Investigations, Annual Report 2007 written by and published by . This book was released on 2009 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 2007, we used radio and acoustic telemetry to evaluate the migratory behavior, survival, mortality, and delay of subyearling fall Chinook salmon in the Clearwater River and Lower Granite Reservoir. Monthly releases of radio-tagged fish ((almost equal to)95/month) were made from May through October and releases of 122-149/month acoustic-tagged fish per month were made from August through October. We compared the size at release of our tagged fish to that which could have been obtained at the same time from in-river, beach seine collections made by the Nez Perce Tribe. Had we relied on in-river collections to obtain our fish, we would have obtained very few in June from the free-flowing river but by late July and August over 90% of collected fish in the transition zone were large enough for tagging. Detection probabilities of radio-tagged subyearlings were generally high ranging from 0.60 (SE=0.22) to 1.0 (SE=0) in the different study reaches and months. Lower detection probabilities were observed in the confluence and upper reservoir reaches where fewer fish were detected. Detection probabilities of acoustic-tagged subyearlings were also high and ranged from 0.86 (SE=0.09) to 1.0 (SE=0) in the confluence and upper reservoir reaches during August through October. Estimates of the joint probability of migration and survival generally declined in a downstream direction for fish released from June through August. Estimates were lowest in the transition zone (the lower 7 km of the Clearwater River) for the June release and lowest in the confluence area for July and August releases. The joint probability of migration and survival in these reaches was higher for the September and October releases, and were similar to those of fish released in May. Both fish weight and length at tagging were significantly correlated with the joint probability of migrating and surviving for both radio-tagged and acoustic-tagged fish. For both tag types, fish that were heavier at tagging had a higher probability of successfully passing through the confluence (P=0.0050 for radio-tagged fish; P=0.0038 for acoustic-tagged fish). Radio-tagged fish with greater weight at tagging also had a higher probability of migrating and surviving through both the lower free-flowing reach (P=0.0497) and the transition zone (P=0.0007). Downstream movement rates of radio-tagged subyearlings were highest in free-flowing reaches in every month and decreased considerably with impoundment. Movement rates were slowest in the transition zone for the June and August release groups, and in the confluence reach for the July release group. For acoustic-tagged subyearlings, the slowest movement rates through the confluence and upper reservoir reaches were observed for the September release group. Radio-tagged fish released in August showed the greatest delay in the transition zone, while acoustic-tagged fish released in September showed the greatest delay in the transition zone and confluence reaches. Across the monthly release groups from July through September, the probability of delaying in the transition zone and surviving there declined throughout the study. All monthly release groups of radio-tagged subyearlings showed evidence of mortality within the transition zone, with final estimates (across the full 45-d detection period) ranging from 0.12 (SE not available) for the May release group to 0.58 (SE = 0.06) for the June release group. The May and September release groups tended to have lower mortality in the transition zone than the June, July, and August release groups. Live fish were primarily detected away from shore in the channel, whereas all dead fish were located along shorelines with most being located in the vicinity of the Memorial Bridge and immediately upstream. During the May detection period, before the implementation of summer flow augmentation, temperatures in the Clearwater River and Snake River arms of Lower Granite Reservoir and the downstream boundary of the confluence ranged from 8 to 17 C. During the June-August detection periods, however, temperatures in the Clearwater River arm ranged from 10-16 C down to 7 m and the Snake River arm was above 20 C down to a depth of 9 m. Incomplete mixing between the two water sources resulted in significant vertical temperature variation at the downstream boundary of the confluence during a large portion of the June-August detection periods. This variation diminished during the September and October detection periods when temperatures once again fell to 17 C and lower and eventually became uniformly distributed throughout the water column in the confluence.
Book Synopsis Post-Release Attributes and Survival of Hatchery and Natural Fall Chinook Salmon in the Snake River by :
Download or read book Post-Release Attributes and Survival of Hatchery and Natural Fall Chinook Salmon in the Snake River written by and published by . This book was released on 2001 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes results of research activities conducted in 1999 and years previous. In an effort to provide this information to a wider audience, the individual chapters in this report have been submitted as manuscripts to peer-reviewed journals. These chapters communicate significant findings that will aid in the management and recovery of fall chinook salmon in the Columbia River Basin. Abundance and timing of seaward migration of Snake River fall chinook salmon was indexed using passage data collected at Lower Granite Dam for five years. We used genetic analyses to determine the lineage of fish recaptured at Lower Granite Dam that had been previously PIT tagged. We then used discriminant analysis to determine run membership of PIT-tagged smolts that were not recaptured to enable us to calculate annual run composition and to compared early life history attributes of wild subyearling fall and spring chinook salmon. Because spring chinook salmon made up from 15.1 to 44.4% of the tagged subyearling smolts that were detected passing Lower Granite Dam, subyearling passage data at Lower Granite Dam can only be used to index fall chinook salmon smolt abundance and passage timing if genetic samples are taken to identify run membership of smolts. Otherwise, fall chinook salmon smolt abundance would be overestimated and timing of fall chinook salmon smolt passage would appear to be earlier and more protracted than is the case.
Book Synopsis Lyons Ferry Hatchery Evaluation by :
Download or read book Lyons Ferry Hatchery Evaluation written by and published by . This book was released on 2006 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Survival Estimates for the Passage of Juvenile Chinook Salmon Through Snake River Dams and Reservoirs, 1993 Annual Report by :
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.
Book Synopsis Post-Release Attributes and Survival of Hatchery and Natural Fall Chinook Salmon in the Snake River ; 2000-2001 Annual Report by :
Download or read book Post-Release Attributes and Survival of Hatchery and Natural Fall Chinook Salmon in the Snake River ; 2000-2001 Annual Report written by and published by . This book was released on 2003 with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes results of research activities conducted in 2000, 2001, and years previous to aid in the management and recovery of fall chinook salmon in the Columbia River basin. The report is divided into sections and self-standing chapters. For detailed summaries, we refer the reader to the abstracts given on the second page of each chapter. The Annual Reporting section includes information provided to fishery managers in-season and post-season, and it contains a detailed summary of life history and survival statistics on wild Snake River fall chinook salmon juveniles for the years 1992-2001. The Journal Manuscripts section includes complete copies of papers submitted or published during 2000 and 2001 that were not included in previous annual reports. Publication is a high priority for this project because it provides our results to a wide audience, it ensures that our work meets high scientific standards, and we believe that it is a necessary obligation of a research project. The Bibliography of Published Journal Articles section provides citations for peer-reviewed papers co-authored by personnel of project 199102900 that were published from 1998 to 2001.
