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Publications

Below is a list of available WFRC peer reviewed and published science.

Filter Total Items: 2517

Importance of spatial pattern in estimating predation on juvenile salmonids in the Columbia River Importance of spatial pattern in estimating predation on juvenile salmonids in the Columbia River

The impact of piscivores in aquatic systems is often estimated by assuming that predation rate and predator density can be characterized as means throughout large, homogeneous areas. Predation losses of juvenile Pacific salmonids Oncorhynchus spp. migrating through Columbia River reservoirs were previously estimated with the assumption that each reservoir consisted of one or two...
Authors
James H. Petersen

Temperature and CO2 Effects on Blood O2 Equilibria in Northern Squawfish, Ptychocheilus oregonensis Temperature and CO2 Effects on Blood O2 Equilibria in Northern Squawfish, Ptychocheilus oregonensis

In vitro blood O2 equilibrium curves were constructed at 9, 15, 18, and 21 °C from temperature-acclimated northern squawfish, Ptychocheilus oregonensis. At low (
Authors
Joseph J. Cech, Daniel T. Castleberry, Todd E. Hopkins

Northern squawfish Ptychochelius oregonensis, O2 consumption rate: Effects of temperature and body size Northern squawfish Ptychochelius oregonensis, O2 consumption rate: Effects of temperature and body size

Northern squawfish, Ptychocheilus oregonensis (live weight range 0.361–1.973 kg), O2consumption was measured with temperature-controlled, flow-through respirometers for >24 h. Mean standard O2 consumption rate of northern squawfish increased with acclimation temperature: 24.3, 49.1, 75.0, and 89.4 mg∙kg−0.67∙h−1 at 9, 15, 18, and 21 °C, respectively. Q10analysis showed that O2...
Authors
Joseph J. Cech, Daniel T. Castleberry, Todd E. Hopkins, James H. Petersen

Developmental instability as an indicator of natural stress on the Pacific Hake (Merlussius productus) Developmental instability as an indicator of natural stress on the Pacific Hake (Merlussius productus)

Developmental lnstability (DI) has been proposed as an inexpensive, quickly applied, and sensitive indicator of stress that can be utilized in early warning and in monitoring anthropogenic impacts on fish and other animals and plants. A problem arises, however, to the extent that natural stressors confound the effects of human-induced disturbances. Our objective in this work was to...
Authors
C.L. Alados, J. Escos, J.M. Emlen
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