Assessment of Spring Chinook Salmon Habitat Suitability in the San Joaquin River Using a 2-D Depth-Averaged Model

10.5772/57437 ◽  
2013 ◽  
pp. 1 ◽  
Author(s):  
Lubo Liu ◽  
Joaquin Ramirez
Keyword(s):  
Chinook Salmon ◽  
Habitat Suitability ◽  
San Joaquin River ◽  
Averaged Model

Estimating the influence of temperature on the survival of chinook salmon smolts (Oncorhynchus tshawytscha) migrating through the Sacramento – San Joaquin River Delta of California

1995 ◽  
Vol 52 (4) ◽  
pp. 855-863 ◽  
Author(s):  
Peter Fritz Baker ◽  
Franklin K. Ligon ◽  
Terence P. Speed
Keyword(s):  
Water Temperature ◽  
Chinook Salmon ◽  
Oncorhynchus Tshawytscha ◽  
Logistic Function ◽  
Laboratory Findings ◽  
Natural Systems ◽  
San Joaquin River ◽  
Influence Of Temperature On ◽  
The Relationship ◽  
Good Agreement

Data from the U.S. Fish and Wildlife Service are used to investigate the relationship between water temperature and survival of hatchery-raised fall-run chinook salmon (Oncorhynchus tshawytscha) smolts migrating through the Sacramento – San Joaquin Delta of California. A formal statistical model is presented for the release of smolts marked with coded-wire tags (CWTs) in the lower Sacramento River and the subsequent recovery of marked smolts in midwater trawls in the Delta. This model treats survival as a logistic function of water temperature, and the release and recovery of different CWT groups as independent mark–recapture experiments. Iteratively reweighted least squares is used to fit the model to the data, and simulation is used to establish confidence intervals for the fitted parameters. A 95% confidence interval for the upper incipient lethal temperature, inferred from the trawl data by this method, is 23.01 ± 1.08 °C This is in good agreement with published experimental results obtained under controlled conditions (24.3 ± 0.1 and 25.1 ± 0.1 °C for chinook salmon acclimatized to 10 and 20 °C, respectively): this agreement has implications for the applicability of laboratory findings to natural systems.

scholarly journals Survival of a threatened salmon is linked to spatial variability in river conditions

2021 ◽  
Author(s):  
Colby L. Hause ◽  
Gabriel P. Singer ◽  
Rebecca A. Buchanan ◽  
Dennis E. Cocherell ◽  
Nann A. Fangue ◽  
...  
Keyword(s):  
Pacific Northwest ◽  
Chinook Salmon ◽  
Habitat Restoration ◽  
Oncorhynchus Tshawytscha ◽  
Central Valley ◽  
Data Generation ◽  
Habitat Variability ◽  
River Habitat ◽  
San Joaquin River ◽  
The Pacific

AbstractExtirpation of the Central Valley spring-run Chinook Salmon ESU (Oncorhynchus tshawytscha) from the San Joaquin River is emblematic of salmonid declines across the Pacific Northwest. Habitat restoration and fish reintroduction efforts are ongoing, but recent telemetry studies have revealed low outmigration survival of juveniles to the ocean. Previous investigations have focused on modeling survival relative to river discharge and geographic regions, but have largely overlooked the effects of habitat variability. To evaluate the link between environmental conditions and survival of juvenile spring-run Chinook Salmon, we combined high spatial resolution habitat mapping approaches with acoustic telemetry along a 150 km section of the San Joaquin River during the spring of 2019. While overall outmigration survival was low (5%), our habitat-based classification scheme described variation in survival of acoustic-tagged smolts better than other candidate models based on geography or distance. There were two regional mortality sinks evident along the longitudinal profile of the river, revealing poor survival in areas that shared warmer temperatures but that diverged in chlorophyll-α, fDOM, turbidity and dissolved oxygen levels. These findings demonstrate the value of integrating river habitat classification frameworks to improve our understanding of survival dynamics of imperiled fish populations. Importantly, our data generation and modeling methods can be applied to a wide variety of fish species that transit heterogeneous and diverse habitat types.

scholarly journals Survival and migration route probabilities of juvenile Chinook salmon in the Sacramento-San Joaquin River Delta during the winter of 2009-10

2012 ◽  
Author(s):  
Russell W. Perry ◽  
Jason G. Romine ◽  
Scott J. Brewer ◽  
Peter E. LaCivita ◽  
William N. Brostoff ◽  
...  
Keyword(s):  
Chinook Salmon ◽  
River Delta ◽  
Migration Route ◽  
Juvenile Chinook Salmon ◽  
San Joaquin River ◽  
Juvenile Chinook ◽  
And Migration

scholarly journals Sensitivity of survival to migration routes used by juvenile Chinook salmon to negotiate the Sacramento-San Joaquin River Delta

2012 ◽  
Vol 96 (2-3) ◽  
pp. 381-392 ◽  
Author(s):  
Russell W. Perry ◽  
Patricia L. Brandes ◽  
Jon R. Burau ◽  
A. Peter Klimley ◽  
Bruce MacFarlane ◽  
...  
Keyword(s):  
Chinook Salmon ◽  
River Delta ◽  
Migration Routes ◽  
Juvenile Chinook Salmon ◽  
San Joaquin River ◽  
Juvenile Chinook

Survival of Juvenile Fall-Run Chinook Salmon through the San Joaquin River Delta, California, 2010-2015

2018 ◽  
Vol 38 (3) ◽  
pp. 663-679 ◽  
Author(s):  
Rebecca A. Buchanan ◽  
Patricia L. Brandes ◽  
John R. Skalski
Keyword(s):  
Chinook Salmon ◽  
River Delta ◽  
San Joaquin River

Route Use and Survival of Juvenile Chinook Salmon through the San Joaquin River Delta

2013 ◽  
Vol 33 (1) ◽  
pp. 216-229 ◽  
Author(s):  
Rebecca A. Buchanan ◽  
John R. Skalski ◽  
Patricia L. Brandes ◽  
Andrea Fuller
Keyword(s):  
Chinook Salmon ◽  
River Delta ◽  
Juvenile Chinook Salmon ◽  
San Joaquin River ◽  
Juvenile Chinook
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