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Influence Of Water Temperature On Adult Salmon And Steelhead Passage And Behavior At Lower Granite Dam 2008
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Book Synopsis Influence of Water Temperature on Adult Salmon and Steelhead Passage and Behavior at Lower Granite Dam, 2008 by : T. S. Clabough
Download or read book Influence of Water Temperature on Adult Salmon and Steelhead Passage and Behavior at Lower Granite Dam, 2008 written by T. S. Clabough and published by . This book was released on 2009 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Previous studies have identified Lower Granite Dam fish ladder as having as high temperature differentials during summer months. In 2008, we monitored water temperatures within the fish ladder and the passage of radio-tagged adult salmonids at Lower Granite Dam. Water temperatures in the fish ladder were cooler than in previous study years, with only five percent or less of all radio-tagged fish passing the dam when water temperatures differences between upper and lower segments of the fishway exceeded 1 °C. The warmest average monthly temperatures occurred in August and differences in temperature between the top and bottom of ladder the ladder exceeding 1 °C occurred on one day in July and one day in October. A significantly higher percentage of spring-summer Chinook salmon (O. tshawytscha) exited the fish ladder to the tailrace when temperatures exceeded 18 °C than when water ladder temperatures were less than 18 °C. We did not find differences in the percent of steelhead (O. mykiss) and fall Chinook salmon that exited the ladder when temperatures were greater than or less than 18 °C. Median dam and transition pool passage times were higher for all runs of radio-tagged fish when water ladder temperatures exceeded 18 °C. Most tagged fish that exited the dam to the tailrace did so after reaching the transition pool area of the ladder regardless of temperature. We found a higher percentage of fish overnighted when water temperatures were greater than 18 °C. Since 2008 was a relatively cool year, future studies may be needed to more effectively evaluate the relationship between fish passage and temperature gradients within the fish ladder at Lower Granite Dam."--Abstract.
Book Synopsis INFLUENCE OF WATER TEMPERATURE ON ADULT SALMON AND STEELHEAD PASSAGE AND BEHAVIOR AT LOWER GRANITE DAM, 2008 by : T.S. Clabough
Download or read book INFLUENCE OF WATER TEMPERATURE ON ADULT SALMON AND STEELHEAD PASSAGE AND BEHAVIOR AT LOWER GRANITE DAM, 2008 written by T.S. Clabough and published by . This book was released on 2009 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Pollution Effects on Adult Steelhead Migration in the Snake River by : C. Michael Falter
Download or read book Pollution Effects on Adult Steelhead Migration in the Snake River written by C. Michael Falter and published by . This book was released on 1974 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Water Temperatures and Passage of Adult Salmon and Steelhead in the Lower Snake River by : Christopher A. Peery
Download or read book Water Temperatures and Passage of Adult Salmon and Steelhead in the Lower Snake River written by Christopher A. Peery and published by . This book was released on 2003 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Associations Between Adult Salmon and Steelhead Body Temperature During Upstream Migration and Estimated Water Temperatures in Lower Granite Reservoir During Cold Water Releases from Dworshak Reservoir, 2004 by : Tami S. Clabough
Download or read book Associations Between Adult Salmon and Steelhead Body Temperature During Upstream Migration and Estimated Water Temperatures in Lower Granite Reservoir During Cold Water Releases from Dworshak Reservoir, 2004 written by Tami S. Clabough and published by . This book was released on 2007 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Water is released from Dworshak Reservoir, Clearwater River, Idaho, during summer to improve flows for outmigrating anadromous salmonid smolts Oncorhynchus spp., and to cool summer water temperatures in the lower Snake River for smolts and returning adults. Complex mixing of Clearwater and warmer Snake River water masses results in vertical and lateral temperature gradients below the confluence of these two rivers and persists into the Lower Granite Reservoir. These gradients represent variation in the thermal environment from which adult salmonids may potentially select to regulate body temperature during upstream migration (behavioral thermoregulation). In a previous study during 2001 and 2002, 216 adult Chinook salmon O. tshawytscha and 250 steelhead O. mykiss were tagged with acoustic Multiple Array Processor (MAP) tags which indicated fish position and transmitted temperatures and depths of fish. Results indicated mean fish temperatures were cooler than mean modeled river temperatures supporting the hypothesis that fish were behaviorally thermoregulating by selecting cooler water originating from Dworshak Reservoir. In 2004, 120 adult salmon and 128 steelhead were tagged with MAP tags at Lower Granite Dam. Temperature and depth information from mobile tracked fish (89) and fish recorded on a fixed MAP receiver site (168) were analyzed and compared to fixed field temperature sites (modeled river data was not available). The results from the 2004 study were consistent with results from 2001-2, where we observed consistent evidence that fish selected and used cool water when available. Individual fish temperatures were frequently below the mean field river temperatures and decreased as individuals neared the Snake-Clearwater confluence. Comparisons of fish depth between Dworshak Dam release and non-release periods supported the hypothesis that individual fish used coolwater masses originating from Dworshak Reservoir found at deeper depths during release periods. Overall, these data support the hypothesis that upstream migrating adults use the cool water released from Dworshak Reservoir and that these releases reduce thermal stress during warm summer months."--Abstract (page iii).
Book Synopsis Effects of Agricultural Conservation Practices on Fish and Wildlife by :
Download or read book Effects of Agricultural Conservation Practices on Fish and Wildlife written by and published by . This book was released on 2008 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The bibliography is a guide to recent scientific literature covering effects of agricultural conservation practices on fish and wildlife. The citations listed here provide information on how conservation programs and practices designed to improve fish and wildlife habitat, as well as those intended for other purposes (e.g., water quality improvement), affect various aquatic and terrestrial fauna"--Abstract.
Book Synopsis Effect of Water Temperature on Adult Steelhead Migration Behavior and Survival in the Columbia River Basin by : Brett High
Download or read book Effect of Water Temperature on Adult Steelhead Migration Behavior and Survival in the Columbia River Basin written by Brett High and published by . This book was released on 2002 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mega-Dams and Indigenous Human Rights by : Itzchak Kornfeld
Download or read book Mega-Dams and Indigenous Human Rights written by Itzchak Kornfeld and published by Edward Elgar Publishing. This book was released on 2020-01-31 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: This original and insightful book explores and examines the impact that building mega-dams has on the human rights of those living in surrounding areas, and in particular those of indigenous peoples who are often most affected. Compiling case studies from around the world, Itzchak Kornfeld provides clear examples of how human rights violations are perpetrated and compounded, with chapters examining historical, recent and ongoing dam projects.
Book Synopsis Evaluation of Energy Expenditures in Adult Salmon and Steelhead Migrating Upstream in the Columbia and Snake Rivers by : Matthew G. Mesa
Download or read book Evaluation of Energy Expenditures in Adult Salmon and Steelhead Migrating Upstream in the Columbia and Snake Rivers written by Matthew G. Mesa and published by . This book was released on 2001 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Canadian Journal of Fisheries and Aquatic Sciences by :
Download or read book Canadian Journal of Fisheries and Aquatic Sciences written by and published by . This book was released on 2013 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Operation of the Lower Granite Dam Adult Trap, 2008 by :
Download or read book Operation of the Lower Granite Dam Adult Trap, 2008 written by and published by . This book was released on 2009 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: During 2008 we operated the adult salmonid trap at Lower Granite Dam from 7 March through 25 November, except during a short summer period when water temperatures were too high to safely handle fish. We collected and handled a total of 20,463 steelhead Oncorhynchus mykiss and radio-tagged 34 of the hatchery steelhead. We took scale samples from 3,724 spring/summer Chinook salmon O. tshawytscha for age and genetic analysis. We collected and handled a total of 8,254 fall Chinook salmon. Of those fish, 2,520 adults and 942 jacks were transported to Lyons Ferry Hatchery on the Snake River in Washington. In addition, 961 adults and 107 jacks were transported to the Nez Perce Tribal Hatchery on the Clearwater River in Idaho. The remaining 3,724 fall Chinook salmon were passed upstream. Scales samples were taken from 780 fall Chinook salmon tagged with passive integrated transponder (PIT) tags and collected by the sort-by-code system.
Book Synopsis Salmon-Challis National Forest (N.F.), Idaho Cobalt Project by :
Download or read book Salmon-Challis National Forest (N.F.), Idaho Cobalt Project written by and published by . This book was released on 2008 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Review of Literature Related to Movements of Adult Salmon and Steelhead Past Dams and Through Reservoirs in the Lower Snake River by : Theodore C. Bjornn
Download or read book A Review of Literature Related to Movements of Adult Salmon and Steelhead Past Dams and Through Reservoirs in the Lower Snake River written by Theodore C. Bjornn and published by . This book was released on 1992 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Monitoring the Migrations of Wild Snake River Spring by :
Download or read book Monitoring the Migrations of Wild Snake River Spring written by and published by . This book was released on 1998 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: In August 1996, we PIT tagged and released 1,360 wild chinook salmon parr in the South Fork of the Salmon River and two of its tributaries in Idaho. During spring and summer 1997, the overall adjusted percentage of PIT-tagged fish from Idaho detected at six downstream dams averaged 18.3% (range 16.0 to 27.3% depending on stream of origin). Peak detections of all wild spring/summer chinook salmon smolts (from Idaho and Oregon) at Lower Granite Dam occurred during variable but increasing river flows in April. High river flows from mid-April to mid-May moved most of these fish through Lower Granite Dam, with 50 and 90% passage occurring on 24 April and 21 May, respectively. From 1989 to 1996, peak detections of wild spring/summer chinook salmon smolts were highly variable and generally independent of river flows before about 9 May at this dam; however, during these years (including 1997), peak detections of wild fish coincided with periods of peak flow at the dam from 9 May to the end of May. In both 1995 and 1996, in excess of 90% of the wild fish had migrated past Lower Granite Dam by the time peak flows occurred in June. In 1989, we observed a period of peak detections of wild fish that coincided with peak flows at the dam in June. After examining chinook salmon smolt passage timing at the dams over the last 9 years, it has become clear that flow is only one of several factors that influence passage timing. Other factors, such as annual climatic conditions, water temperature, turbidity, physiological development, variability in stock behavior, fish size, and other yet unknown conditions may equally affect wild smolt passage timing at dams. As additional environmental monitors and traps are installed in study streams, we will be able to more accurately monitor parr and smolt movements out of rearing areas and examine the relationships of these movements to environmental parameters within the streams. Mapped over time, this information will provide the basis for accurately predicting the migrational timing of different wild stocks as they migrate downstream through the hydropower system.
Book Synopsis Hydrodynamics and Juvenile Salmon Movement Behavior at Lower Granite Dam by : Richard Andrew Goodwin
Download or read book Hydrodynamics and Juvenile Salmon Movement Behavior at Lower Granite Dam written by Richard Andrew Goodwin and published by . This book was released on 2003 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Passage of Radio-tagged Adult Salmon and Steelhead at John Day Dam with Emphasis on Fishway Temperatures, 1997-1998 by : Matthew L. Keefer
Download or read book Passage of Radio-tagged Adult Salmon and Steelhead at John Day Dam with Emphasis on Fishway Temperatures, 1997-1998 written by Matthew L. Keefer and published by . This book was released on 2003 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Fishway Modifications to Improve Passage of Adult Chinook Salmon and Steelhead Through the Transition Pool at Lower Granite Dam, 2006 by :
Download or read book Evaluation of Fishway Modifications to Improve Passage of Adult Chinook Salmon and Steelhead Through the Transition Pool at Lower Granite Dam, 2006 written by and published by . This book was released on 2007 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
