Author: Pamela Ann Petrusso
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 232
Book Description
Feeding Habits and Condition of Juvenile Chinook Salmon in the Upper Sacramento River, California
Author: Pamela Ann Petrusso
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 232
Book Description
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 232
Book Description
Condition and Feeding of Juvenile Chinook Salmon in Selected Intermittent Tributaries of the Upper Sacramento River
Author: Teri L. Moore
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 132
Book Description
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 132
Book Description
The Status of the Sacramento River Spring-run Chinook Salmon
Author:
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 36
Book Description
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 36
Book Description
Biological Opinion [that Address the Potential Effects on Sacramento River Winter-run Chinook Salmon from the Bureau of Reclamation's Proposed Los Vaqueros Project]
Author:
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 36
Book Description
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 36
Book Description
Intermittent Streams as Rearing Habitat for Sacramento River Chinook Salmon (oncorhynchus Tshawytscha)
Author: Paul Maslin
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 62
Book Description
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 62
Book Description
An Analysis of Juvenile Chinook Salmon Outmigration Speed and Survival in Response to Habitat Features: Sacramento River from Knights Landing to Sacramento, California
Author: Natalie N McNair
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
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.
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
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.
Abundance and Seasonal, Spatial and Diel Distribution Patterns of Juvenile Salmonids Passing the Red Bluff Diversion Dam, Sacramento River
Author: Phillip D. Gaines
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 180
Book Description
Publisher:
ISBN:
Category : Chinook salmon
Languages : en
Pages : 180
Book Description
California Fish and Game
Author:
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 552
Book Description
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 552
Book Description
Movements of Juvenile Chinook Salmon in the Sacramento Watershed, California
Author: Anna Edith Steel
Publisher:
ISBN: 9781321807394
Category :
Languages : en
Pages :
Book Description
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.
Publisher:
ISBN: 9781321807394
Category :
Languages : en
Pages :
Book Description
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.
Ephemeral Floodplain Habitats Provide Best Growth Conditions for Juvenile Chinook Salmon in a California River
Author: Carson Allen Jeffres
Publisher:
ISBN:
Category :
Languages : en
Pages : 58
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 58
Book Description