Survival and Migration Dynamics of Juvenile Chinook Salmon (Oncorhynchus tshawytscha) in the Sacramento-San Joaquin River Delta
نویسندگان
چکیده
Survival and migration dynamics of juvenile Chinook salmon (Oncorhynchus tshawytscha) in the Sacramento-San Joaquin River Delta
منابع مشابه
Hierarchical modeling of juvenile chinook salmon survival as a function of Sacramento-San Joaquin Delta water exports
1 A multi-year study in the Sacramento-San Joaquin Delta system was carried out to exam2 ine the relationship between the survival of out-migrating Chinook salmon Oncorhynchus 3 tshawytscha and the amount of water exported from the system by the two major pumping 4 stations in the southern portion of the Delta. Paired releases of groups of coded-wire-tagged 5 juvenile late-fall run Chinook salm...
متن کاملLosses of Sacramento River Chinook Salmon and Delta Smelt to Entrainment in Water Diversions in the Sacramento-San Joaquin Delta
Pumping at the water export facilities in the southern Sacramento-San Joaquin Delta kills fish at and near the associated fish-salvage facilities. Correlative analyses of salvage counts with population indices have failed to provide quantitative estimates of the magnitude of this mortality. I estimated the proportional losses of Sacramento River Chinook salmon (Oncorhynchus tshawytscha) and del...
متن کاملControls on the Entrainment of Juvenile Chinook Salmon (Oncorhynchus tshawytscha) into Large Water Diversions and Estimates of Population-Level Loss
Diversion of freshwater can cause significant changes in hydrologic dynamics and this can have negative consequences for fish populations. Additionally, fishes can be directly entrained into diversion infrastructure (e.g. canals, reservoirs, pumps) where they may become lost to the population. However, the effect of diversion losses on fish population dynamics remains unclear. We used 15 years ...
متن کاملModeling the effect of striped bass (Morone saxatilis) on the population viability of Sacramento River winter-run chinook salmon (Oncorhynchus tshawytscha)
We estimated the impact of striped bass (Morone saxatilis) pre dation on winter-run chinook salmon (Oncorhynchus tshawytscha) with a Bayesian population dynamics model using striped bass and winter-run chinook salmon population abundance data. Winter-run chinook salmon ex tinction and recovery probabilities under different future striped bass abundance levels were estimated by simulating from...
متن کاملComparison of Diets of Prickly Sculpin and Juvenile Fall-run Chinook Salmon in the Lower Mokelumne River, California
I compared diets of prickly sculpin, Cottus asper, and juvenile fall-run chinook salmon, Oncorhynchus tshawytscha, in the lower Mokelumne River, California, from January through June during 1998 and 1999. Prickly sculpin fed primarily on chironomid (Diptera) larvae and hydroptilid and hydropsychid (Trichoptera) larvae. Juvenile chinook salmon fed on zooplankton, plus chironomid, hydroptilid, an...
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