Publications
Juvenile Chinook salmon
Below is a list of available CRRL peer reviewed and published science.
Filter Total Items: 524
Spatial and temporal distribution of bull trout (Salvelinus confluentus)-size fish near the floating surface collector in the North Fork Reservoir, Oregon, 2016
Acoustic cameras were used to assess the behavior and abundance of bull trout (Salvelinus confluentus)-size fish at the entrance to the North Fork Reservoir juvenile fish floating surface collector (FSC). The purpose of the FSC is to collect downriver migrating juvenile salmonids at the North Fork Dam, and safely route them around the hydroelectric projects. The objective of the acoustic camera co
Authors
Noah S. Adams, Collin D. Smith
Juvenile salmonid monitoring in the White Salmon River, Washington, post-Condit Dam removal, 2016
Condit Dam, at river kilometer 5.3 on the White Salmon River, Washington, was breached in 2011 and removed completely in 2012, allowing anadromous salmonids access to habitat that had been blocked for nearly 100 years. A multi-agency workgroup concluded that the preferred salmonid restoration alternative was natural recolonization with monitoring to assess efficacy, followed by a management evalua
Authors
Ian G. Jezorek, Jill M. Hardiman
Veligers of the invasive Asian clam Corbicula fluminea in the Columbia River Basin: Broadscale distribution, abundance, and ecological associations
The invasive Asian clam Corbicula fluminea was introduced to North America in the 1930s and now inhabits most regions of the conterminous United States; however, the distribution and ecology of C. fluminea in the Columbia River Basin is poorly understood. During 2013 and 2014, 5 Columbia-Snake River reservoirs were sampled monthly from May through September, along with 23 additional lakes and rese
Authors
Whitney Hassett, Stephen M. Bollens, Timothy D. Counihan, Gretchen Rollwagen-Bollens, Julie Zimmerman, Joshua E. Emerson
Wind River Subbasin Restoration, annual report of U.S. Geological Survey activities: Parr monitoring and instream passive integrated transponder detection, January 1, 2015 – December 31, 2015
We used Passive Integrated Transponder (PIT)-tagging and a series of instream PIT-tag
interrogation systems (PTIS) to investigate life-histories, populations, and efficacy of habitat
restoration actions for steelhead Oncorhynchus mykiss in the Wind River subbasin, WA. Our
tagging focused on parr in headwater areas of the subbasin and our PTISs provide information on movement of these parr, which i
Authors
Ian Jezorek, Patrick Connolly
Long-term fish monitoring in large rivers: Utility of “benchmarking” across basins
In business, benchmarking is a widely used practice of comparing your own business processes to those of other comparable companies and incorporating identified best practices to improve performance. Biologists and resource managers designing and conducting monitoring programs for fish in large river systems tend to focus on single river basins or segments of large rivers, missing opportunities to
Authors
David L. Ward, Andrew F. Casper, Timothy D. Counihan, Jennifer M. Bayer, Ian R. Waite, John J. Kosovich, Colin Chapman, Elise R. Irwin, Jennifer S. Sauer, Brian Ickes, Alexa McKerrow
By
Core Science Systems Mission Area, Ecosystems Mission Area, Science Synthesis, Analysis and Research Program, Gap Analysis Project, Science Analytics and Synthesis (SAS) Program, Species Management Research Program, Southwest Biological Science Center, Western Fisheries Research Center, Columbia River Research Laboratory (CRRL)
Trophic interactions and consumption rates of subyearling Chinook Salmon and nonnative juvenile American Shad in Columbia River reservoirs
We used a large lampara seine coupled with nonlethal gastric lavage to examine the diets and estimate consumption rates of subyearling Chinook Salmon Oncorhynchus tshawytscha during July and August 2013. During August we also examined the diet and consumption rates of juvenile American Shad Alosa sapidissima, a potential competitor of subyearling Chinook Salmon. Subyearling Chinook Salmon consumed
Authors
Craig A. Haskell, David A. Beauchamp, Stephen M Bollins
Early detection monitoring for larval dreissenid mussels: How much plankton sampling is enough?
The development of quagga and zebra mussel (dreissenids) monitoring programs in the Pacific Northwest provides a unique opportunity to evaluate a regional invasive species detection effort early in its development. Recent studies suggest that the ecological and economic costs of a dreissenid infestation in the Pacific Northwest of the USA would be significant. Consequently, efforts are underway to
Authors
Timothy D. Counihan, Stephen M. Bollens
Preliminary evaluation of the behavior and movements of adult spring Chinook salmon in the Chehalis River, southwestern Washington, 2014
Recent interest in flood control and restoration strategies in the Chehalis River Basin has increased the need to understand the current status and ecology of spring Chinook salmon (Oncorhynchus tshawytscha). Spring Chinook salmon have the longest exposure of all adult Chinook salmon life histories to the low-flow and high water temperature conditions that typically occur during summer. About 100
Authors
Theresa L. Liedtke, William R. Hurst, Ryan G. Tomka, Tobias J. Kock, Mara S. Zimmerman
Identifying western yellow-billed cuckoo breeding habitat with a dual modelling approach
The western population of the yellow-billed cuckoo (Coccyzus americanus) was recently listed as threatened under the federal Endangered Species Act. Yellow-billed cuckoo conservation efforts require the identification of features and area requirements associated with high quality, riparian forest habitat at spatial scales that range from nest microhabitat to landscape, as well as lower-suitability
Authors
Matthew J. Johnson, James R. Hatten, Jennifer A. Holmes, Patrick B. Shafroth
Development of a study design and implementation plan to estimate juvenile salmon survival in Lookout Point Reservoir and other reservoirs of the Willamette Project, western Oregon
Survival estimates for juvenile salmon and steelhead fry in reservoirs impounded by high head dams are coveted data by resource managers. However, this information is difficult to obtain because these fish are too small for tagging using conventional methods such as passive-integrated transponders or radio or acoustic transmitters. We developed a study design and implementation plan to conduct a
Authors
Tobias J. Kock, Russell W. Perry, Fred R. Monzyk, Adam C. Pope, John M. Plumb
Survival of juvenile chinook salmon and coho salmon in the Roza Dam fish bypass and in downstream reaches of the Yakima River, Washington, 2016
Estimates of juvenile salmon survival are important data for fishery managers in the Yakima River Basin. Radiotelemetry studies during 2012–14 showed that tagged juvenile Chinook salmon (Oncorhynchus tshawytscha) that passed through the fish bypass at Roza Dam had lower survival than fish that passed through other routes at the dam. That study also identified flow-survival relationships in the rea
Authors
Tobias J. Kock, Russell W. Perry, Amy C. Hansen
Ecology of the Opossum Shrimp (Neomysis mercedis) in a Lower Snake River Reservoir, Washington
The opossum shrimp Neomysis mercedis has expanded its range from the lower Columbia River upstream 695 kilometers into Lower Granite Reservoir where it is now very abundant. We studied Neomysis ecology in the reservoir during 2011–2015 to better understand the physical and biological factors that shape their distribution as well as their potential role in the food web. Benthic densities in offshor
Authors
Kenneth F. Tiffan, John M. Erhardt, Brad K. Bickford