Ecology of Juvenile Salmon in Shallow Tidal Freshwater Habitats of the Lower Columbia River, 2007?2010

Johnson, Gary E.; Storch, Adam J.; Skalski, John R.; Bryson, Amanda J.; Mallette, Christine; Borde, Amy B.; Dyke, Erick Van; Sobocinski, Kathryn L.; Sather, Nichole K.; Teel, David J.; Dawley, Earl M.; Ploskey, Gene R.; Jones, Tucker; Zimmerman, Shon A.; Kuligowski, David R.

doi:10.2172/1009747

Cited by 10 publications

(12 citation statements)

References 64 publications

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“…Key findings (excerpted from Johnson et al 2011a) from our previous work in shallow freshwater habitats (2007)(2008)(2009)(2010) of the LCRE include the following:…”

Section: 2mentioning

confidence: 99%

“…Such knowledge is important to CEERP managers because it indicates the importance of these habitats to juvenile salmon, including those listed under the Endangered Species Act of 1973. In 2010, residence times for juvenile Chinook salmon that were captured and tagged during winter in the SRD vicinity averaged 34 d with a median of 26 d and a range from 1 to 78 d (Johnson et al 2011b). The 2011 study was intended to corroborate the results of the 2010 study.…”

Section: Residence Time Studymentioning

confidence: 99%

“…Fish were released behind Gary Island from February 3 through February 16, 2011. Five autonomous acoustic nodes were placed in the off-channel area behind Gary and Flag islands, as in 2010 (Johnson et al 2011b), to detect signals from the transmitters in the tagged fish. The receiving nodes were in place from February through early May 2011.…”

Section: Residence Time Studymentioning

confidence: 99%

“…A total of 48 tagged fish composed the residence time data set. Methodologies associated with analysis of residence time data are available from Johnson et al (2011b). The residence time investigation has the following assumptions and caveats:…”

Section: Residence Time Studymentioning

confidence: 99%

“…Previous research from 2007 through 2010 were reported on an annual basis by Sobocinski et al (2008), Sather et al (2009), andJohnson et al (2011a) and can be downloaded from http://efw.bpa.gov/IntegratedFWP/reportcenter.aspx.…”

Section: Introductionmentioning

confidence: 99%

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Multi-Scale Action Effectiveness Research in the Lower Columbia River and Estuary, 2011 - FINAL ANNUAL REPORT

Sather¹,

Storch²,

Johnson³

et al. 2012

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“…Key findings (excerpted from Johnson et al 2011a) from our previous work in shallow freshwater habitats (2007)(2008)(2009)(2010) of the LCRE include the following:…”

Section: 2mentioning

confidence: 99%

Section: Residence Time Studymentioning

confidence: 99%

Section: Residence Time Studymentioning

confidence: 99%

Section: Residence Time Studymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Multi-Scale Action Effectiveness Research in the Lower Columbia River and Estuary, 2011 - FINAL ANNUAL REPORT

Sather¹,

Storch²,

Johnson³

et al. 2012

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Juvenile Salmonid Assemblages at the Mirror Lake Complex in the Lower Columbia River before and after a Culvert Modification

Sol

Hanson

Marcoe

et al. 2018

N American J Fish Manag

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This study examined salmonid assemblages upstream of a culvert connecting the Mirror Lake Complex with the lower Columbia River before and after the culvert was modified to improve habitat connectivity and fish passage. Initially the culvert limited water flow between the Columbia River and the Mirror Lake Complex. The outlet and interior of the culvert were reconfigured to create a more “natural” and suitable passageway for salmonids through the removal of riprap and the strategic placement of boulders, cobbles, gravels, baffles, and weirs. Prior to the culvert modification, three sites were sampled monthly between April and August of 2008, 5.0 and 0.5 km upstream of the culvert and immediately downstream of the culvert. After the culvert modification, the same sites were sampled from 2009 to 2012, with two additional sites added in 2010. Sites near the culvert supported Chinook Salmon Oncorhynchus tshawytscha, Coho Salmon O. kisutch, and Chum Salmon O. keta, while sites further from the culvert supported unmarked Coho Salmon and Rainbow Trout O. mykiss, steelhead (anadromous Rainbow Trout), and Cutthroat Trout O. clarkii. Clear trends in salmonid occurrence were not observed, although densities of Chinook Salmon tended to be higher in years postmodification than before modification. Culvert modifications should focus on alleviating site‐specific fish passage conditions to result in substantial changes to habitat connectivity.

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Changes in Fish Assemblages at the Mirror Lake Complex in the Lower Columbia River Before and After a Culvert Modification

Sol

Hanson

Marcoe

et al. 2019

N American J Fish Manag

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Changes in fish assemblages were examined before and after a culvert was modified to improve the fish passage at the Mirror Lake Complex (MLC), located along the Columbia River Gorge, Oregon. Conditions at the culvert limited water flow between the Columbia River and the MLC during certain portions of the year; thus, the outlet and interior of the culvert were modified to improve fish passage. Prior to the culvert modification, three sites were sampled monthly between April and August 2008, 5.0 km and 0.5 km upstream of the culvert and immediately downstream of the culvert. Following the culvert modification in the late summer of 2008, the same sites were sampled from 2009 to 2012, with two additional sites added in 2010. Prior to the culvert modification, the lower sites (i.e., the sites closest to the Columbia River) supported native and nonnative fish species, while the upper sites were dominated by native species. During the 4 years of monitoring after culvert modification, these distinctions between the upper and lower sites remained. A significant increase in water temperature and species richness was observed at the site just upstream of the culvert, but other changes in fish composition (density, diversity, percent of nonnative species) were not observed. However, at the upper sites, while nonnative species were absent before culvert modification, they were present after modification. Modifications made at the culvert, in combination with seasonal variation in water level and water temperature, may have influenced fish communities in the MLC. Given predicted regional and global climatic changes, our study indicates the importance of long‐term monitoring of restoration sites for the presence of nonnative species and the effects of environmental variables, such as water temperature.

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Ecology of Juvenile Salmon in Shallow Tidal Freshwater Habitats of the Lower Columbia River, 2007?2010

Cited by 10 publications

References 64 publications

Multi-Scale Action Effectiveness Research in the Lower Columbia River and Estuary, 2011 - FINAL ANNUAL REPORT

Multi-Scale Action Effectiveness Research in the Lower Columbia River and Estuary, 2011 - FINAL ANNUAL REPORT

Juvenile Salmonid Assemblages at the Mirror Lake Complex in the Lower Columbia River before and after a Culvert Modification

Changes in Fish Assemblages at the Mirror Lake Complex in the Lower Columbia River Before and After a Culvert Modification

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