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Author : Stephen Achord
Publisher :
ISBN 13 :
Total Pages : 82 pages
Book Rating : 4.:/5 (465 download)
Download or read book Monitoring the Migrations of Wild Snake River Spring/summer Chinook Salmon Smolts, 1998 written by Stephen Achord and published by . This book was released on 2000 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 89 pages
Book Rating : 4.:/5 (684 download)
Download or read book Monitoring the Migrations of Wild Snake River Spring written by and published by . This book was released on 2000 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reports details the 1998 study results from an ongoing project to monitor the migration behavior of wild spring/summer chinook salmon smolts in the Snake River Basin. The report also discusses trends observed in the cumulative data resulting from this project; data has been collected from Oregon and Idaho streams since 1989. The project was initiated after 3 years of detection data from PIT-tags (passive-integrated-transponder tags) had shown distinct differences in migration patterns between wild and hatchery fish. Data showing these patterns had originated from tagging and interrogation operations begun in 1988 to evaluate a smolt transportation program conducted by the National Marine Fisheries Service (NMFS) for the US Army Corps of Engineers. In 1991, the Bonneville Power Administration began a cooperative effort with NMFS to expand tagging and interrogation of wild fish for this project. Project goals were to characterize the outmigration timing of these fish, to determine whether consistent migration patterns would emerge, and to investigate the influence of environmental factors on the timing and distribution of these migrations. In 1992, the Oregon Department of Fish and Wildlife (ODFW) began an independent program of PIT tagging wild chinook salmon parr in the Grande Ronde and Imnaha River Basins in northeast Oregon. Since then, ODFW has reported all tagging, detection, and timing information on fish from these streams. However, with ODFW concurrence, NMFS will continue to report arrival timing of these fish at Lower Granite Dam. We continued to tag fish from Idaho in all years subsequent to 1992. Principal results from our tagging and interrogation efforts during 1997-1998 are given.
Author : Stephen Achord
Publisher :
ISBN 13 :
Total Pages : 72 pages
Book Rating : 4.:/5 (467 download)
Download or read book Monitoring the Migrations of Wild Snake River Spring/summer Chinook Salmon Smolts written by Stephen Achord and published by . This book was released on 1998 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monitoring the Migrations of Wild Snake River Spring and Summer Chinook Salmon Smolts written by and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Stephen Achord
Publisher :
ISBN 13 :
Total Pages : 97 pages
Book Rating : 4.:/5 (316 download)
Download or read book Monitoring the Migrations of Wild Snake River Spring/Summer Chinook Salmon Juveniles, 2003-2004 Annual Report written by Stephen Achord and published by . This book was released on 2005 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report provides information on PIT-tagging of wild Chinook salmon parr in Idaho in 2003 and the subsequent monitoring of these fish and similarly tagged fish from Oregon. We report estimated parr-to-smolt survival and arrival timing of these fish at Lower Granite Dam, as well as interrogation data collected at several other sites throughout the Snake and Columbia River system. This research continues studies that began under Bonneville Power Administration (BPA) funding in 1991. Results from previous study years were reported by Achord et al. (1994; 1995a, b; 1996a; 1997; 1998; 2000; 2001a, b; 2002, 2003, 2004). Goals of this ongoing study are: (1) Characterize the migration timing and estimate parr-to-smolt survival of different stocks of wild Snake River spring/summer Chinook salmon smolts at Lower Granite Dam. (2) Determine whether consistent migration patterns are apparent. (3) Determine what environmental factors influence migration patterns. (4) Characterize the migration behavior and estimate survival of different wild juvenile fish stocks as they emigrate from their natal rearing areas. This study provides critical information for recovery planning, and ultimately recovery for these ESA-listed wild fish stocks. In 2003-2004, we also continued to measure water temperature, dissolved oxygen, specific conductance, turbidity, water depth, and pH at five monitoring stations in the Salmon River Basin, Idaho for the Baseline Environmental Monitoring Program. These data, along with parr/smolt migration, survival, and timing data, will help to discern patterns or characteristic relationships between fish movement/survival and environmental factors.
Author :
Publisher :
ISBN 13 :
Total Pages : 183 pages
Book Rating : 4.:/5 (893 download)
Download or read book Monitoring the Migrations of Wild Snake River Spring/Summer Chinook Salmon Smolts, 1994-1995 Progress (Annual) Report written by and published by . This book was released on 1996 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt: We PIT tagged wild spring/summer chinook-salmon parr in the Snake River Basin in 1994 and subsequently monitored these fish during their smolt migration through Lower Granite, Little Goose, Lower Monumental, McNary, John Day, and Bonneville Darns during spring, summer, and fall 1995. This report details our findings. The goals of this study are to (1) characterize the migration timing of different wild stocks of Snake River spring/summer chinook salmon smolts at dams on the Snake and Columbia Rivers, (2) determine if consistent patterns are apparent, and (3) determine what environmental factors influence migration timing.
Author : Eric E. Hockersmith
Publisher :
ISBN 13 :
Total Pages : 102 pages
Book Rating : 4.:/5 (316 download)
Download or read book Monitoring the Migrations of Wild Snake River Spring/Summer Chinook Salmon Smolts, 2001-2002 Annual Report written by Eric E. Hockersmith and published by . This book was released on 2003 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report details the 2002 results from an ongoing project to monitor the migration behavior of wild spring/summer chinook salmon smolts in the Snake River Basin. The report also discusses trends in the cumulative data collected for this project from Oregon and Idaho streams since 1989. The project was initiated after detection data from passive-integrated-transponder tags (PIT tags) had shown distinct differences in migration patterns between wild and hatchery fish for three consecutive years. National Marine Fisheries Service (NMFS) investigators first observed these differences in 1989. The data originated from tagging and interrogation operations begun in 1988 to evaluate smolt transportation for the U.S. Army Corps of Engineers. In 1991, the Bonneville Power Administration began a cooperative effort with NMFS to expand tagging and interrogation of wild fish. Project goals were to characterize the outmigration timing of these fish, to determine whether consistent migration patterns would emerge, and to investigate the influence of environmental factors on the timing and distribution of these migrations. In 1992, the Oregon Department of Fish and Wildlife (ODFW) began an independent program of PIT tagging wild chinook salmon parr in the Grande Ronde and Imnaha River Basins in northeast Oregon. Since then, ODFW has reported all tagging, detection, and timing information on fish from these streams. However, with ODFW concurrence, NMFS will continue to report arrival timing of these fish at Lower Granite Dam.
Author :
Publisher :
ISBN 13 :
Total Pages : 87 pages
Book Rating : 4.:/5 (487 download)
Download or read book Monitoring the Migrations of Wild Snake River Spring/summer Chinook Salmon Smolts, 1999 written by and published by . This book was released on 2001 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 104 pages
Book Rating : 4.:/5 (487 download)
Download or read book Monitoring the Migrations of Wild Snake River Spring/summer Chinook Salmon Smolts, 2000 written by and published by . This book was released on 2001 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Stephen Achord
Publisher :
ISBN 13 :
Total Pages : 100 pages
Book Rating : 4.:/5 (39 download)
Download or read book Monitoring the Migrations of Wild Snake River Spring/summer Chinook Salmon Smolts written by Stephen Achord and published by . This book was released on 1995 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Stephen Achord
Publisher :
ISBN 13 :
Total Pages : 179 pages
Book Rating : 4.:/5 (39 download)
Download or read book Monitoring the Migrations of Wild Snake River Spring/summer Chinook Salmon Smolts, 1995 written by Stephen Achord and published by . This book was released on 1996 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Stephen Achord
Publisher :
ISBN 13 :
Total Pages : 74 pages
Book Rating : 4.:/5 (39 download)
Download or read book Monitoring the Migrations of Wild Snake River Spring/summer Chinook Salmon Smolts written by Stephen Achord and published by . This book was released on 1997 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Stephen Achord
Publisher :
ISBN 13 :
Total Pages : 88 pages
Book Rating : 4.:/5 (393 download)
Download or read book Monitoring the Migrations of Wild Snake River Spring/summer Chinook Salmon Smolts, 1993 written by Stephen Achord and published by . This book was released on 1995 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 78 pages
Book Rating : 4.:/5 (683 download)
Download or read book Monitoring the Migrations of Wild Snake River Spring and Summer Chinook Salmon Smolts, 1992 Annual Report written by and published by . This book was released on 1994 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: We PIT tagged wild spring and summer chinook salmon parr in the Snake River Basin in 1991, and subsequently monitored these fish during their smolt migration through Lower Granite, Little Goose, and McNary Dams during spring and summer 1992. This report details our findings.
Download or read book Energieeinsatz füz Landwirtschaft und Lebensmittelherstellung in der EWG written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 88 pages
Book Rating : 4.:/5 (727 download)
Download or read book Monitoring and Evaluation of Smolt Migration in the Columbia River Basin, Volume IV written by and published by . This book was released on 1997 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: Program RealTime provided tracking and forecasting of the 1998 inseason outmigration via the internet for stocks of wild PIT-tagged spring/summer chinook. These stocks were from eight release sites above Lower Granite dam, including Bear Valley Creek, Catherine Creek, Elk Creek, Lake Creek, Imnaha River, Minam River, South Fork Salmon River, and Secesh River. Forecasts were also provided for a stock of hatchery-reared PIT-tagged summer-run sockeye from Redfish Lake and for the runs-at-large of Snake River wild yearling and subyearling chinook salmon, and steelhead. The 1998 Program RealTime performance was comparable to its performance in previous years for the whole-season evaluations for every stock tracked. Relative to 1997, performance improved for the yearling chinook run-at-large, and for predictions for last-half of the season for every other stock. Performance compared poorly with 1997 predictions for the first half of the runs of PIT-tagged yearling spring/summer chinook stocks and the run-at-large of fall subyearling chinook, and was slightly worse for the first half of the Redfish Lake sockeye run and the steelhead run-at-large. Poor first-half performance was likely due to the unusually large (and in some cases short) outmigrations in 1998. Utilization in 1998 of a different method of adjusting smolt counts at Lower Granite Dam compared to previous years produced slightly better first-half performance than pre-1998 adjustments would have, but slightly worse last-half performance, for all the PIT-tagged stocks, prompting a return to the pre-1998 adjustment formula for the 1999 outmigration. An Army Corp of Engineers (ACOE) experiment during April and May of 1998 involving the installation of two new components to existing structures at Lower Granite Dam did not appear to affect RealTime performance. A comparison of run-timing predictions based on FPC passage indices and Battelle hydroacoustic counts showed the two independent data sources produced very similar results, for the wild steelhead and yearling chinook runs-at-large. Due to the less than desirable first half performance in 1998, a refinement in the calibration process for Program RealTime will be conducted in the future.
Author : Caitlin Burgess
Publisher :
ISBN 13 :
Total Pages : 88 pages
Book Rating : 4.:/5 (727 download)
Download or read book Monitoring and Evaluation of Smolt Migration in the Columbia River Basin written by Caitlin Burgess and published by . This book was released on 2000 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: Program RealTime provided tracking and forecasting of the 1999 inseason outmigration via the internet for stocks of wild PIT-tagged spring/summer chinook salmon. These stocks were ESUs from sixteen release sites above Lower Granite dam, including Bear Valley Creek, Big Creek, Cape Horn Creek, Catherine Creek, Elk Creek, Herd Creek, Imnaha River, Lake Creek, Loon Creek, Lostine River, Marsh Creek, Minam River, South Fork Salmon River, and Secesh River, Sulfur Creek and Valley Creek. Forecasts were also provided for a stock of hatchery-reared PIT-tagged summer-run sockeye salmon from Redfish Lake and for the runs-at-large of Snake River wild yearling chinook salmon, and steelhead trout. The 1999 RealTime project began making forecasts for a new stock of PIT-tagged wild fall subyearling chinook salmon, as a substitute for forecasts of the wild run-at-large, discontinued June 6. Forecasts for the run-at-large were discontinued when a large release of unmarked hatchery fish into the Snake River made identification of wild fish impossible. The 1999 Program RealTime performance was comparable to its performance in previous years with respect to the run-at-large of yearling chinook salmon (whole season MAD=3.7%), and the run of hatchery-reared Redfish Lake sockeye salmon (whole season MAD=6.7%). Season-wide performance of program RealTime predictions for wild Snake River yearling chinook salmon ESUs improved in 1999, with mean MADs from the first half of the outmigrations down from 15.1% in 1998 to 4.5% in 1999. RealTime performance was somewhat worse for the run-at-large of steelhead trout in 1999, compared to 1998, particularly during the last half of the outmigration when the MAD increased from 2.7% in 1998 to 6.1% in 1999. A pattern of over-predictions was observed in half of the yearling chinook salmon ESUs and the steelhead run-at-large during the month of May. Lower-than-average outflows were observed at Lower Granite dam during the first half of May, the only period of low flows in an year with otherwise higher-than-average-flows. The passage distribution of the stock new to the RealTime forecasting project, the PIT tagged stock of fall subyearling chinook salmon, was predicted with very good accuracy (whole season MAD=4.7%), particularly during the last half of the outmigration (MAD=3.6%). The RealTime project reverted to a pre-1998 method of adjusting PIT-tagged smolt counts at Lower Granite Dam because of its superior performance during the last half of the outmigration.
