Download or read book Feeding Habits and Condition of Juvenile Chinook Salmon in the Upper Sacramento River California written by Pamela Ann Petrusso and published by . This book was released on 1998 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Condition and Feeding of Juvenile Chinook Salmon in Selected Intermittent Tributaries of the Upper Sacramento River written by Teri L. Moore and published by . This book was released on 1997 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Status of the Sacramento River Spring run Chinook Salmon written by and published by . This book was released on 1996 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Intermittent Streams as Rearing Habitat for Sacramento River Chinook Salmon oncorhynchus Tshawytscha written by Paul Maslin and published by . This book was released on 1998 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biological Opinion that Address the Potential Effects on Sacramento River Winter run Chinook Salmon from the Bureau of Reclamation s Proposed Los Vaqueros Project written by and published by . This book was released on 1993 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Analysis of Juvenile Chinook Salmon Outmigration Speed and Survival in Response to Habitat Features Sacramento River from Knights Landing to Sacramento California written by Natalie N McNair and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Outmigration is an important life stage for Chinook salmon (Oncorhynchus tshawytscha) survival in the Sacramento River, and yet our understanding of their behavior and needs during this time is limited. To gain a better understanding of their survival and movement rates during outmigration, late fall run Chinook salmon smolts were tracked using acoustic telemetry techniques. Habitat features were measured and quantified throughout the study area to evaluate how Chinook salmon respond to key levee features including shade, instream woody material, and aquatic vegetation. The overall average movement speed through the entire study area was 0.77 m/s with an overall survival of 86%. Based on multiple linear regressions, vegetation was found to have the largest effect on speed with fish slowing down with increased vegetation cover. Shade, river mile, and velocity also had significant effects on movement speeds, but instream woody material was not significant. The result for woody material was surprising since it was anticipated to have a large impact on movement speeds. A positive correlation was found between faster fish movement speeds and higher survival. No evidence of diel movement patterns was found after releasing the fish. These finding can help managers create sites better designed to help Chinook salmon in the Sacramento River system. Results from this paper indicate that the type of woody material being installed might not be appropriate for this life stage of salmon.

Download or read book Movements of Juvenile Chinook Salmon in the Sacramento Watershed California written by Anna Edith Steel and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Juvenile Chinook salmon (Oncorhynchus tshawytscha) experience high rates of mortality as they out-migrate, frequently navigating through rivers heavily modified by human activities. Understanding patterns of movement and survival is key to informing management decisions in these human-dominated aquatic systems. Ultrasonic telemetry is a valuable tool allowing us to observe the movement patterns of aquatic animals. The first chapter of this dissertation examines the performance of an ultrasonic telemetry positioning system by comparing receiver arrays deployed in three diverse environments. It suggests that researchers utilizing a positioning system should focus on testing the geometry of receivers before the study begins, as well as minimizing receiver movements and maximizing the accuracy of speed-of-sound estimates. The second chapter uses an ultrasonic positioning system to observe the route selection of juvenile out-migrants at an artificial juncture in the tidal portion of the Sacramento River, California. The strongest predictor of ultimate migratory route was the relative water velocity at the river's junction with the water diversion channel. The third chapter describes patterns in survival through a segment of the lower Sacramento River. We applied a previously derived analytical model, the mean free-path length model, in a new way to determine whether predator densities or prey behaviors were more indicative of fine-scale mortality rates. The model indicated that the hatchery smolt were highly directional in their outmigration behavior, leading us to conclude that spatial patterns in survival of juvenile Chinook were driven by increasing density or efficiency of the predator community. Ultrasonic telemetry technologies can be valuable in habitats where direct observation of animals is difficult, including in large river systems such as the Sacramento River. Through the continuing advancement of these technologies, their careful application, and the appropriate union of empirical data and modeling approaches, we can provide valuable information about the movements and mortality patterns of species of conservation concern.

Download or read book California Fish and Game written by and published by . This book was released on 2010 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Abundance and Seasonal Spatial and Diel Distribution Patterns of Juvenile Salmonids Passing the Red Bluff Diversion Dam Sacramento River written by Phillip D. Gaines and published by . This book was released on 2002 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ephemeral Floodplain Habitats Provide Best Growth Conditions for Juvenile Chinook Salmon in a California River written by Carson Allen Jeffres and published by . This book was released on 2006 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Travel Time and Condition of Juvenile Chinook Salmon Passed Through Archimedes Lifts an Internal Helical Pump and Bypasses at Red Bluff Research Pumping Plant Sacramento River California written by Sandra M. Borthwick and published by . This book was released on 2000 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Inland Fishes of California written by Peter B. Moyle and published by Univ of California Press. This book was released on 2002-05-21 with total page 533 pages. Available in PDF, EPUB and Kindle. Book excerpt: When the first edition of Inland Fishes of California was published in 1976, it was a benchmark reference. Since that time, our knowledge of California's freshwater fishes has dramatically increased. This completely revised edition incorporates a vast amount of new information and creates a fresh synthesis of the historical data. Written by the leading expert on California's freshwater fishes and illustrated with beautiful line drawings, this compendium is the single best source for understanding and identifying the state's freshwater fishes. It is an essential resource for anyone who needs to have accurate and detailed information on California's fishes at their fingertips. Since the 1870s, the state's native fishes have been joined by thirty-four alien species, which now dominate many bodies of water. This book treats both native and introduced species, first in a key for identification, and then in individual species accounts covering characteristics, taxonomy, names, distribution, and life history. Each account includes the author's personal assessment of how well the species is doing and problems associated with its management. Most of the native fishes are found only in California and show many wonderful adaptations for living in the state's diverse waters. Unfortunately, many are also in danger of extinction. The message underlying the first edition of this book was that we knew astonishingly little about many of California's inland fishes. Although our knowledge is increasing, full accounts of some native fishes may not be complete before they become extinct. Preventing the loss of native fishes is the major goal of this book, and Moyle makes important suggestions for conservation strategies as well as presenting up-to-date information on ecology, life history, and distribution. With this knowledge, preserving our native fishes becomes possible even in the face of the state's growing economy and population.

Download or read book Abundance Food Habits and Life History Aspects of Sacramento Squawfish and Striped Bass at the Red Bluff Diversion Complex Including the Research Pumping Plant Sacramento River California 1994 1996 written by Michael E. Tucker and published by . This book was released on 1998 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Contrasting Patterns of Juvenile Chinook Salmon Oncorhynchus Tshawytscha Growth Diet and Prey Densities in Off channel and Main Stem Habitats on the Sacramento River written by Michael P. Limm and published by . This book was released on 2004 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Year class Regulation of Mid upper Columbia River Spring Chinook Salmon Oncorhynchus Tshawytscha written by Londi M. Tomaro and published by . This book was released on 2011 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: Early ocean residence is assumed to be a critical period for juvenile Pacific salmon Oncorhynchus spp. However, the specific mechanisms influencing growth and survival in the ocean have not been identified for most populations. Therefore, three hypotheses regarding the relationship between early marine residence and subsequent survival of mid-upper Columbia River spring Chinook salmon were evaluated: the 'bigger is better', 'stage duration', and 'match-mistmatch' hypotheses. Six metrics describing juvenile migration history and condition were developed, including 1) size at freshwater exit; 2) size at ocean capture; 3) initial ocean growth rates; 4) timing of ocean entrance; 5) duration of ocean residence; and 6) marine migration rates. Retrospective estimates of size and growth using otolith analyses rely on the assumption that otolith and somatic size are related. Therefore, I verified this assumption for mid-upper Columbia River Chinook salmon and determined that a body-proportional back-calculation method was the best approach for this population. Fish length and otolith width were positively correlated (r > 0.92) and growth rates estimated from back-calculated sizes were positively correlated with observed growth rates (r = 0.96). I also evaluated the utility of using the otolith Sr:Ca pattern as a marker of hatchery-origin and investigated potential mechanisms for the observed Sr:Ca pattern. Visual and quantitative criteria were developed using otoliths of hatchery fish and were used to correctly classify 85% and 78%, respectively, of a sample of known hatchery-origin fish (n = 114) that were collected in coastal waters. Although Sr:Ca in water and hatchery food did not fully account for the observed pattern in otolith Sr:Ca, the pattern can be used to identify mid-upper Columbia River spring Chinook salmon of hatchery-origin with relatively high accuracy (>75%). The six juvenile metrics were used to evaluate mechanisms potentially regulating establishment of year-class abundance. The only metrics found to be significantly related to future adult abundance were size at freshwater exit (r2 = 0.56) and capture (r2 = 0.60). These data support the 'bigger is better' hypothesis and indicate that factors influencing size and growth during freshwater residence should be investigated further. Juveniles resided in the brackish/ocean for one to two months prior to capture in May and June; therefore, ocean conditions after this period may be related to the 40% of variation in adult abundance unexplained by interannual variation in body size.

Download or read book Contributions to the Biology of Central Valley Salmonids Chinook salmon in the lower American River California s largest urban stream written by Randall L. Brown and published by . This book was released on 2001 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Experimental Results from Passing Juvenile Chinook Salmon Through Archimedes Lifts and an Internal Helical Pump at Red Bluff Research Pumping Plant Upper Sacramento River California written by C. D. McNabb and published by . This book was released on 2000 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: