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Dams, which block access to historical spawning and rearing habitats, are responsible for the extirpation of Pacific salmonids (Oncorhynchus spp.) from ~45% of their historical range in the western United States and Canada. Postdoctoral researcher Melissa Evans is evaluating Chinook salmon reintroductions above Foster Dam on the South Santiam River in Oregon. The reproductive success of reintroduced salmon is estimated by genetically identifying adult progeny that return to the river 3-5 years later. The reconstructed pedigrees from the South Santiam project and a related project on the South Fork McKenzie River are also being used to examine life history trait (age, migration timing, body size), heritability, and the potential for adaptation in reintroduced salmon. This project is being conducted in the O'Malley lab at OSU and is a collaboration with the Oregon Department of Fish and Wildlife and the U.S. Army Corps of Engineers.
PhD candidate Christina Murphy is working in Willamette Basin reservoirs to understand how dam management influences reservoir conditions and food webs, including modeling the responses of juvenile Chinook Salmon foraging and growth. This project is being conducted in the Johnson and Arismendi labs at OSU and is a collaboration with the U.S. Army Corps of Engineers, the U.S. Forest Service and the Oregon Department of Fish and Wildlife.
Did you know? Subyearling Upper Willamette Spring Chinook can grow to more than 200 mm rearing in reservoirs.
Losee, J. P. Miller, J. A., Peterson, W. T., Teel, D. J., and Jacobson, K. C. 2014. Influence of ocean ecosystem variability on trophic interactions and survival of juvenile coho and Chinook salmon. Canadian Journal of Fisheries & Aquatic Sciences 71:1747-1757.
Claiborne, A. M., Miller, J. A, Weitkamp, L. A., Teel, D. J., Emmett, R. L. 2014. Evidence for selective mortality in marine environments: the role of fish migration size, timing, and production type. Marine Ecology Progress Series 515:187-2014.
Tomaro, L., Teel, D. J., Peterson, W. P., and Miller, J. A. 2012. Early marine residence of Columbia River spring Chinook salmon: when is bigger better? Marine Ecology Progress Series 452:237-252.
Miller, J. A., Teel, D. J., Baptista, A., and Morgan, C. A. 2013. Disentangling bottom-up and top-down effects on survival during early ocean residence in a population of Chinook salmon (Oncorhynchus tshawytscha). Canadian Journal of Fisheries & Aquatic Sciences. 70:617-629.
Miller, J. A., Teel, D. J., Peterson, W. T., and Baptista, A. 2014. Assessing the relative importance of local and regional processes on the survival of a threatened salmon population. PLOS ONE.
K. G. O'Malley, Jacobson, D. P., Kurth, R., Dill, A. J., and Banks, M. A., “Adaptive genetic markers discriminate migratory runs of Chinook salmon Oncorhynchus tshawytscha amid continued gene flow”, Evolutionary Applications, vol. 6, no. 8, pp. 1184 - 1194, 2013.
More coming soon.