PDF
Effects Of The Shad Fishery On Passage Of Adult Chinook Salmon Through The Oregon-Shore Fishway Ladder At The Dalles Dam – 2002 Item Info
- Title:
- Effects Of The Shad Fishery On Passage Of Adult Chinook Salmon Through The Oregon-Shore Fishway Ladder At The Dalles Dam – 2002
- Report Type:
- Technical Report
- Date:
- 2003
- Authors:
- Jepson, M.A.; Williams, C.L.; Peery, C.A.; Moser, M.L.
- Affiliations:
- Idaho Cooperative Fish and Wildlife Research Unit; National Marine Fisheries Service, National Oceanic and Atmospheric Administration
- Report Number:
- 2003-04
- Publisher:
- University of Idaho
- Funder:
- U.S. Army Corps of Engineers, Portland District; U.S. Army Corps of Engineers, Walla Walla District
- Abstract:
- A fishery for American shad Alosa sapidissima at the exit of the Oregon-shore ladder at The Dalles Dam in the spring of 2002 had the potential to disrupt passage of adult Chinook salmon Oncorhynchus tshawytscha through the ladder. We evaluated the effects of the shad fishery on passage by monitoring Chinook salmon with radio transmitters as they passed through the Oregon-shore fishway. Passage times for 33 radio-tagged Chinook salmon that exited the ladder during the period the shad fishery were compared to passage times for 60 radio-tagged Chinook salmon that passed the dam prior to the shad fishery. We found that median time for Chinook salmon to pass through and exit the ladder before the shad fishery was significantly shorter than the median passage time observed during the shad fishery. However, the median time for Chinook salmon to pass on fishery days when the trapnet was deployed was not significantly different from the median time observed on fishery days when the trapnet was not deployed. Similarly, the effect of the fishery on passage rates was confounded with cooler mean daily water temperatures observed in the forebay of the dam during the fishery.
- Species:
- American shad, Alosa sapidissima Chinook salmon, Oncorhynchus tshawytscha
- Location:
- Columbia River; The Dalles Dam
- Subjects:
- salmonids clupeids Federal Columbia River Power System FCPRS radiotelemetry migration passage behavior fishways fisheries effects
- Source:
- University of Idaho, Fish Ecology Research Lab
- Original Filename:
- 2003-04-Shad-effects-at-The-Dalles-2002.pdf
- Format:
- application/pdf
Source
- Preferred Citation:
- "Effects Of The Shad Fishery On Passage Of Adult Chinook Salmon Through The Oregon-Shore Fishway Ladder At The Dalles Dam – 2002", Adult Salmon and Steelhead Migration Studies: 1996-2014, University of Idaho Library Digital Collections, https://www.lib.uidaho.edu/digital/ferl/items/ferl-tr-2003-04.html
Rights
- Rights:
- These files are provided for research purposes with copyright held by the original authors. Please contact the publishing organization for more information about rights.
- Standardized Rights:
- http://rightsstatements.org/vocab/InC-EDU/1.0/