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Estimating Juvenile Chinook Salmon Oncorhynchus Tshawytscha Abundance From Beach Seine Data Collected In The Sacramento San Joaquin Delta And San Francisco Bay California
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Book Synopsis Estimating Juvenile Chinook Salmon (Oncorhynchus Tshawytscha) Abundance from Beach Seine Data Collected in the Sacramento-San Joaquin Delta and San Francisco Bay, California by : Russell W. Perry
Download or read book Estimating Juvenile Chinook Salmon (Oncorhynchus Tshawytscha) Abundance from Beach Seine Data Collected in the Sacramento-San Joaquin Delta and San Francisco Bay, California written by Russell W. Perry and published by . This book was released on 2016 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Recovery Plan for the Sacramento/San Joaquin Delta Native Fishes by :
Download or read book Recovery Plan for the Sacramento/San Joaquin Delta Native Fishes written by and published by . This book was released on 1996 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Survival and Migration Dynamics of Juvenile Chinook Salmon (Oncorhynchus Tshawytscha) in the Sacramento-San Joaquin River Delta by : Russell W. Perry
Download or read book Survival and Migration Dynamics of Juvenile Chinook Salmon (Oncorhynchus Tshawytscha) in the Sacramento-San Joaquin River Delta written by Russell W. Perry and published by . This book was released on 2010 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis River Estuarine Survival and Migration of Yearling Sacramento River Chinook Salmon (Oncorhynchus Tshawytscha) Smolts and the Influence of Environment by : Cyril J. Michel
Download or read book River Estuarine Survival and Migration of Yearling Sacramento River Chinook Salmon (Oncorhynchus Tshawytscha) Smolts and the Influence of Environment written by Cyril J. Michel and published by . This book was released on 2010 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Survival and Migration Route Probabilities of Juvenile Chinook Salmon in the Sacramento-San Joaquin River Delta During the Winter of 2009?10 by : U.S. Department Of The Interior
Download or read book Survival and Migration Route Probabilities of Juvenile Chinook Salmon in the Sacramento-San Joaquin River Delta During the Winter of 2009?10 written by U.S. Department Of The Interior and published by CreateSpace. This book was released on 2014-03 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Juvenile Chinook salmon (Oncorhynchus tshawytscha) emigrating from natal tributaries of the Sacramento River may use a number of migration routes to negotiate the Sacramento-San Joaquin River Delta (hereafter, "the Delta"), each of which may influence their probability of surviving. We applied a mark-recapture model to data from acoustically tagged juvenile late-fall Chinook salmon that migrated through the Delta during the winter of 2009-10 (hereafter, 2010). This report presents findings from our fourth year of research.
Book Synopsis Juvenile Chinook Salmon Abundance, Distribution, and Survival in the Sacramento-San Joaquin Estuary by : Patricia L. Brandes
Download or read book Juvenile Chinook Salmon Abundance, Distribution, and Survival in the Sacramento-San Joaquin Estuary written by Patricia L. Brandes and published by . This book was released on 2000 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Abundance and Survival of Juvenile Chinook Salmon in the Sacramento-San Joaquin Estuary by :
Download or read book Abundance and Survival of Juvenile Chinook Salmon in the Sacramento-San Joaquin Estuary written by and published by . This book was released on 2001 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Abundance and Survival of Juvenile Chinook Salmon in the Sacramento-San Joaquin Estuary by :
Download or read book Abundance and Survival of Juvenile Chinook Salmon in the Sacramento-San Joaquin Estuary written by and published by . This book was released on 2003 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Statistical Model for Survival of Chinook Salmon Smolts Outmigrating Through the Lower Sacramento-San Joaquin System by : Ken Newman
Download or read book Statistical Model for Survival of Chinook Salmon Smolts Outmigrating Through the Lower Sacramento-San Joaquin System written by Ken Newman and published by . This book was released on 1997 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Abundance and Survival of Juvenile Chinook Salmon in the Sacramento-San Joaquin Estuary by : U.S. Fish and Wildlife Service. Sacramento-San Joaquin Estuary Fishery Resource Office
Download or read book Abundance and Survival of Juvenile Chinook Salmon in the Sacramento-San Joaquin Estuary written by U.S. Fish and Wildlife Service. Sacramento-San Joaquin Estuary Fishery Resource Office and published by . This book was released on 1994 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fall Chinook (Oncorhynchus Tshawytscha) by : Jim Waldvogel
Download or read book Fall Chinook (Oncorhynchus Tshawytscha) written by Jim Waldvogel and published by . This book was released on 2006 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: Age analysis for 22 years (1980 excluded) showed that the overall percentages for female spawners was 53% (4-year olds), 38% (3-year olds), and 9% (5-year olds). The age composition of male spawners showed a high degree of variability throughout the study. Male chinook of age 2, 3 and 4 were dominant annually, but 5- and 6- year old fish were present in most spawning seasons. All chinook carcasses from which scales were collected were also measured for length (over 120 samples in 22 years). Decreases in mean length were documented for all age classes for each of the El Nino episodes that occurred during the study (1982-1984; 1992-1993; 1997-1998). The decreases in mean length appeared to carry forward for each cohort's age class. The total number of chinook redds was tabulated by counting "fresh" redds during weekly spawning surveys. The mean number of redds was 117 for the 23-year period with a mean of 0.9 redds per adult salmon or 1.8 redds per female.
Book Synopsis Abundance and Survival of Juvenile Chinook Salmon in the Sacramento-San Joaquin Estuary by : U.S. Fish and Wildlife Service
Download or read book Abundance and Survival of Juvenile Chinook Salmon in the Sacramento-San Joaquin Estuary written by U.S. Fish and Wildlife Service and published by . This book was released on 1992 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Suisun Marsh written by Peter B. Moyle and published by Univ of California Press. This book was released on 2014-03-26 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of California's most remarkable wetlands, Suisun Marsh is the largest tidal marsh on the West Coast and a major feature of the San Francisco Estuary. This productive and unique habitat supports endemic species, is a nursery for native fishes, and is a vital link for migratory waterfowl. The 6,000-year-old marsh has been affected by human activity, and humans will continue to have significant impacts on the marsh as the sea level rises and cultural values shift in the century ahead. This study includes in-depth information about the ecological and human history of Suisun Marsh, its abiotic and biotic characteristics, agents of ecological change, and alternative futures facing this ecosystem.
Book Synopsis Analysis of Factors Influencing the Population Dynamics of Chinook Salmon, Oncorhynchus Tshawytscha, in Central California by : Robert Glenn Kope
Download or read book Analysis of Factors Influencing the Population Dynamics of Chinook Salmon, Oncorhynchus Tshawytscha, in Central California written by Robert Glenn Kope and published by . This book was released on 1987 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Ecology of Humboldt Bay, California by : Roger A. Barnhart
Download or read book The Ecology of Humboldt Bay, California written by Roger A. Barnhart and published by . This book was released on 1992 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Comparison of Standard and Environmental DNA Methods for Estimating Chinook Salmon Smolt Abundance in the Klamath River, California by : Doyle J. Coyne
Download or read book Comparison of Standard and Environmental DNA Methods for Estimating Chinook Salmon Smolt Abundance in the Klamath River, California written by Doyle J. Coyne and published by . This book was released on 2021 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: Evaluating abundance of juvenile salmonids is critical to conservation and management. Current abundance estimation involves use of rotary screw traps and mark-recapture studies. Use of environmental DNA (eDNA) in water samples offers a noninvasive and less expensive approach that may potentially improve or eventually replace traditional monitoring. Here I evaluate the utility of eDNA to predict weekly abundance estimates of outmigrating Chinook salmon (Oncorhynchus tshawytscha) smolts in the Klamath River, California. A total of 15 water samples were collected per week over the 17-week smolt outmigration in both 2019 and 2020. Chinook salmon eDNA concentration in each water sample was determined using a species-specific quantitative PCR assay. I compared the response of traditional abundance estimates from a rotary screw trap to the weekly eDNA rate, a metric corrected for variable flow (stream flow (cfs) x eDNA concentration). The best fit model included eDNA rate and temperature and explained 76% of the variation in weekly abundance. In an assessment of eDNA methods, I found that filtering 1-liter of water with 0.45 μm filters captured more eDNA than filtering 2-liters with 3 μm polycarbonate filters and that surface grab samples yielded more eDNA on average than 24-hour composite samples taken using an automated sampling device. A resampling analysis revealed that collecting more days per week and taking more water samples per day both resulted in improved deviance explained; however, if resources are limited, collecting more days per week provided greater improvements than taking more water samples per day. These results suggest that eDNA may potentially be a useful predictor of weekly abundance of out-migrating Chinook salmon smolts. However, when estimates of abundance were less than 13,500 smolts per week, the concentration of eDNA was too low to accurately estimate concentrations. Furthermore, the majority of eDNA measurements for this study were below the threshold determined for reliable quantification with defined precision. The study system evaluated here, where Chinook salmon smolt abundances ranged from 10,000 to over 1 million per week, may have provided an ideal setting for evaluating the utility of using eDNA concentrations to predict abundance. However, to utilize eDNA for standardized monitoring, further improvements of eDNA methods are needed for estimating smolt abundance.
Book Synopsis The California State Water Project by : California. Dept. of Water Resources
Download or read book The California State Water Project written by California. Dept. of Water Resources and published by . This book was released on 1981 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
