Index Catalog // ScholarsArchive@OSU

Creator:: Li, Hiram W., Lamberti, Gary A., Pearsons, Todd N., Tait, Cynthia K., Li, Judith L., and Buckhouse, John C.
Abstract:: In a study of cumulative effects of riparian disturbance by grazing on the trophic structure of high desert trout streams, watersheds with greater riparian canopy had higher standing crops of rainbow trout Oncorhynchus mykiss, lower daily maximum temperatures (range, 16-23°C compared with 26-31°C), and perennial flow. Watershed aspect influenced the...
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Full Text:: Research Unit1 Oregon State University. Corvallis. Oregon 97331. USA GARY A. LAMBERTi,2 TODD N. PEARSONS

Creator:: Kammerer, Brittany D. and Heppell, Scott A.
Abstract:: The physiological response of juvenile steelhead (Oncorhynchus mykiss) to prolonged heat stress was examined by exposing replicated groups of fish to 25 consecutive days at 15°C, 23°C, and 25°C followed by a 55 day recovery period at 15°C. We found that at temperatures ≥25°C, steelhead consumed significantly less food per...
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Full Text:: 16 Brittany D. Kammerer 1 * and Scott A. Heppell1 1 17 1 Department of Fisheries and Wildlife

Creator:: Benkwitt, Cassandra E., Brodeur, Richard D., Hurst, Thomas P., and Daly, Elizabeth A.
Abstract:: The diel feeding periodicity of juvenile Chinook salmon Oncorhynchus tshawytscha was determined from stomachs collected in coastal waters off Oregon in 2000 and 2003. Juvenile Chinook salmon exhibited a diurnal feeding pattern with morning and evening feeding periods. There were differences in the duration and magnitude of the dawn and...
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Full Text:: ; Hongsheng Bi for providing statistical analysis; Todd 118 BENKWITT ET AL. D ow nl oa de d by [ O re

Creator:: Mayfield, M. P., Schultz, L. D., Wyss, L. A., Clemens, B. J., and Schreck, C. B.
Abstract:: Addressing the ongoing decline of Pacific Lamprey Entosphenus tridentatus across its range along the west coast of North America requires an understanding of all life history phases. Currently, spawning surveys (redd counts) are a common tool used to monitor returning adult salmonids, but the methods are in their infancy for...
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Full Text:: Willamette River, Oregon Mayfield, M. P., Schultz, L. D., Wyss, L. A., Clemens, B. J., & Schreck, C. B

Creator:: Campbell, Lance A., Bottom, Daniel L., Volk, Eric C., and Fleming, Ian A.
Abstract:: Fish scales have long been used to reconstruct fine-scale habitat transitions such as the movement of juvenile fish from freshwater, estuary, and ocean environments. Despite the importance of life history information to fisheries management and conservation, few studies have validated that scale morphology accurately describes fish movement between these habitats....
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Full Text:: ., Bottom, D. L., Volk, E. C., & Fleming, I. A. (2015). Correspondence between Scale Morphometrics and

Creator:: Warren, Dana R., Dunham, Jason B., and Hockman-Wert, David
Abstract:: Understanding local and geographic factors influencing species distributions is a prerequisite for conservation planning. Our objective in this study was to model local and geographic variability in elevations occupied by native and nonnative trout in the northwestern Great Basin, USA. To this end, we analyzed a large existing data set...
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Full Text:: evaluate climate-related gradients in geography and local constraints 205 D ow nl oa de d by [ O re

Creator:: O’Malley, Kathleen G., Markle, Douglas F., and Ardren, William R.
Abstract:: We examined the distribution of Umpqua Chub Oregonichthys kalawatseti, an endemic, vulnerable minnow in western Oregon, and whether six ecological populations (based on distribution patterns) had sufficient genetic cohesion to be considered evolutionary populations. We also evaluated the influence of Holocene geological events and recent nonnative predator introductions on the...
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Full Text:: Umpqua River, is considered a “sensitive–critical species” by the Oregon 447 D ow nl oa de d by

Creator:: Zimmerman, Christian E., Swanson, Heidi K., Volk, Eric C., and Kent, Adam J. R.
Abstract:: To test the utility of otolith chemical composition as a tool for determining the natal stream of origin for salmon, we examined water chemistry and otoliths of juvenile and adult Chum Salmon Oncorhynchus keta and Coho Salmon O. kisutch from three watersheds (five rivers) in the Norton Sound region of...
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Full Text:: examining both genetic structure and 1370 D ow nl oa de d by [ O re go n St at e U ni ve rs

Creator:: Benda, Susan E., Naughton, George P., Caudill, Christopher C., Kent, Michael L., and Schreck, Carl B.
Abstract:: Spring Chinook Salmon Oncorhynchus tshawytscha are transported above dams in the Willamette River to provide access to blocked spawning habitat. However, 30–95% of these transplants may die before spawning in some years. To varying degrees, salmon in other tributaries—both blocked and unblocked—have similar prespawn mortality (PSM) rates. Our study determined...
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Full Text:: /00028487.2015.1073621 D ow nl oa de d by [ O re go n St at e U ni ve rs ity ] at 0 7: 59 1 5 Ja

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