Movements by Adult Coho Salmon in the Lower Elwha River, Washington

Burke, Brian J.; Frick, Kinsey E.; Moses, Raymond; McHenry, Michael L.

doi:10.3955/0029-344x-82.s.i.119

Cited by 7 publications

(8 citation statements)

References 28 publications

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“…However, the fish that regurgitated its tag lived, while 95% of those that retained their tags died. Haynes and Gray (1979) reported success with externally mounted tags on Chinook salmon, and external tags have also been used successfully with adult coho salmon O. kisutch (Burke et al 2008), steelhead O. mykiss (Wertheimer and Evans 2005), and Atlantic salmon Salmo salar (Erkinaro et al 1999). However, in our experiment 90% of externally tagged fish shed their tags, possibly from regular contact with the concrete raceway walls.…”

Section: Discussionmentioning

confidence: 99%

“…Handling time was approximately 45 s per fish. Fish in the external attachment treatment group (n = 10) were tagged with smaller tags (0.5 × 3.0 cm, 2 g; 6V Pisces, Grant Systems) that were attached externally using established methods (Burke et al 2008). Each external tag had a 22-cm antenna and was attached at two points by passing black monofilament suture (Ethicon 1-0, Ethilon) through the musculature at the insertion of the dorsal fin (Erkinaro 1999).…”

Section: Methodsmentioning

confidence: 99%

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Experimental Evaluation of Adult Spring Chinook Salmon Radio‐Tagged during the Late Stages of Spawning Migration

Corbett¹,

Moser²,

Dittman³

2012

N American J Fish Manag

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We conducted an experiment to assess the effects of radio‐ tagging on adult spring Chinook salmon Oncorhynchus tshawytscha during the late stages of their spawning migration. Fish were captured at Roza Dam, Yakima River, Washington (river kilometer 208). Each fish had a radio tag inserted into the stomach via the esophagus and was then transported to a raceway and held for 50 d to assess survival. In the same raceway we also held a control group that was handled but not tagged and a group with externally attached transmitters. Survival of fish with gastrically implanted radio tags was low (10%), while 70% of controls and 90% of fish with externally mounted tags survived to the end of the experiment. Postmortem dissections revealed that after implantation, some radio tags had migrated from the stomach position to the posterior digestive tract and peritoneum. Fish from all treatments exhibited some level of tissue degeneration of the gastrointestinal tract. Gastric implantation should be used with caution, particularly for fish at vulnerable life stages. For spring Chinook salmon in the Columbia River basin, tagging with gastric implants should be conducted early in the freshwater migration to improve survival and reduce tag effects. Received September 30, 2011; accepted June 4, 2012

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Experimental Evaluation of Adult Spring Chinook Salmon Radio‐Tagged during the Late Stages of Spawning Migration

Corbett¹,

Moser²,

Dittman³

2012

N American J Fish Manag

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“…In the Elwha River, numerous baseline studies exist (see Winter & Crain 2008), and recent research has characterised characterised existing fish communities and predicted the responses of Pacific salmonids to dam removal (Brenkman et al . 2008a,b; Connolly & Brenkman 2008; Burke et al. 2008; Pess et al.…”

Section: Introductionmentioning

confidence: 99%

“…A key to studying watershed recolonisation by Pacific salmonids after a large-scale dam removal is the collection of spatially continuous baseline information before dam removal. In the Elwha River, numerous baseline studies exist (see Winter & Crain 2008), and recent research has characterised characterised existing fish communities and predicted the responses of Pacific salmonids to dam removal (Brenkman et al 2008a,b;Burke et al 2008;Pess et al 2008;Roni et al 2008;Winans et al 2008;Duda et al in press). Although these studies provide useful baseline information, most were conducted at the site scale, within index reaches, or on a section of the river downstream of the dams, and were not spatially continuous.…”

Section: Introductionmentioning

confidence: 99%

A riverscape perspective of Pacific salmonids and aquatic habitats prior to large‐scale dam removal in the Elwha River, Washington, USA

Brenkman

Duda

Torgersen

et al. 2011

Fisheries Management Eco

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Dam removal has been increasingly proposed as a river restoration technique. In 2011, two large hydroelectric dams will be removed from Washington State's Elwha River. Ten anadromous fish populations are expected to recolonise historical habitats after dam removal. A key to understanding watershed recolonisation is the collection of spatially continuous information on fish and aquatic habitats. A riverscape approach with an emphasis on biological data has rarely been applied in mid-sized, wilderness rivers, particularly in consecutive years prior to dam removal. Concurrent snorkel and habitat surveys were conducted from the headwaters to the mouth (rkm 65-0) of the Elwha River in 2007 and 2008. This riverscape approach characterised the spatial extent, assemblage structure and patterns of relative density of Pacific salmonids. The presence of dams influenced the longitudinal patterns of fish assemblages, and species richness was the highest downstream of the dams, where anadromous salmonids still have access. The percent composition of salmonids was similar in both years for rainbow trout, Oncorhynchus mykiss (Walbaum), coastal cutthroat trout, Oncorhynchus clarkii clarkii (Richardson) (89%; 88%), Chinook salmon, Oncorhynchus tshawytscha (Walbaum) (8%; 9%), and bull trout, Salvelinus confluentus (Suckley) (3% in both years). Spatial patterns of abundance for rainbow and cutthroat trout This article is a U.S. Government work and is in the public domain in the USA. 36 Fisheries Management and EcologyThis article is a U.S. government work, and is not subject to copyright in the United States.(r = 0.76) and bull trout (r = 0.70) were also consistent between years. Multivariate and univariate methods detected differences in habitat structure along the river profile caused by natural and anthropogenic factors. The riverscape view highlighted species-specific biological hotspots and revealed that 60-69% of federally threatened bull trout occurred near or below the dams. Spatially continuous surveys will be vital in evaluating the effectiveness of upcoming dam removal projects at restoring anadromous salmonids.

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“…A series of seven monitoring antennas have been established along an upstream gradient in the Elwha River. This system is currently being used to assess bull trout and resident rainbow trout movements in the river sections above, between, and below the dams (Sam Brenkman, Olympic National Park, personal communication) as well as coho salmon (Burke et al 2008) and winter-run steelhead behavior in the lower Elwha. Individual adult fish will be captured in the lower river and surgically implanted with radio tags to assess upstream migration rates and distances.…”

Section: Recolonization Monitoring Parametersmentioning

confidence: 99%

Fish Assemblage, Density, and Growth in Lateral Habitats within Natural and Regulated Sections of Washington's Elwha River Prior to Dam Removal

Connolly

Brenkman

2008

Northwest Science

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Movements by Adult Coho Salmon in the Lower Elwha River, Washington

Cited by 7 publications

References 28 publications

Experimental Evaluation of Adult Spring Chinook Salmon Radio‐Tagged during the Late Stages of Spawning Migration

Experimental Evaluation of Adult Spring Chinook Salmon Radio‐Tagged during the Late Stages of Spawning Migration

A riverscape perspective of Pacific salmonids and aquatic habitats prior to large‐scale dam removal in the Elwha River, Washington, USA

Fish Assemblage, Density, and Growth in Lateral Habitats within Natural and Regulated Sections of Washington's Elwha River Prior to Dam Removal

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