Seasonal Movements and Spawning of Adult Summer Steelhead Trout (Oncorhynchus Mykiss) in the North Umpqua River, and Steamboat Creek Basin PDF Download
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Author: James J. Wroble
Publisher:
ISBN:
Category : Steelhead (Fish)
Languages : en
Pages :
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Book Description
Author: James J. Wroble
Publisher:
ISBN:
Category : Steelhead (Fish)
Languages : en
Pages :
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Book Description
Author: James J. Wroble
Publisher:
ISBN:
Category : Steelhead (Fish)
Languages : en
Pages : 43
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Book Description
Author:
Publisher:
ISBN:
Category : Steelhead (Fish)
Languages : en
Pages : 56
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Author: Nate T. Fuchs
Publisher:
ISBN:
Category : Steelhead (Fish)
Languages : en
Pages : 0
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Book Description
Understanding population migration trends is of importance to fisheries managers especially for populations listed under the Endangered Species Act. In recent years passive integrated transponder tags (PIT) have been increasingly used to monitor tributary escapement of adult summer Steelhead (Oncorhynchus mykiss) returning to the Upper Columbia River, but do not fully characterize behavior and survival. We evaluated the migration, overwintering distribution, and survival of Upper Columbia using radio telemetry. Additionally we monitored post spawn exit from spawning tributaries ("kelting" rate). We also analyzed the efficacy of newly developed, gastrically implanted acceleration sensing tags applied with the primary aim of detecting spawning behaviors. Using video observations, we collected movement data from telemetered steelhead within an enclosure. We developed criteria for analyzing acceleration data to infer the behaviors of tagged steelhead, released at-liberty in the natural environment. Monitoring of at-liberty steelhead revealed spawning behaviors similar to those observed among enclosure steelhead
Author: Robert Douglas Workman
Publisher:
ISBN:
Category : Habitat selection
Languages : en
Pages : 276
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Author: Thomas Christopher Stark
Publisher:
ISBN:
Category : Rainbow trout
Languages : en
Pages : 238
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"The Gulkana River supports the northernmost population of steelhead and rainbow trout Oncorhynchus mykiss in North America. The summer habitat of Gulkana River juvenile trout (i.e., steelhead and rainbow trout) was identified and described. Analysis of geomorphological features of stream reaches (stream entrenchment, bankfull width-to-depth ratio, sinuosity, channel material, and slope) in relation to differential use of habitat by juvenile trout indicated a strong preference for type C reaches (predominately riffle/run habitat) over type E reaches (predominately slow run habitat). A comparison of micro-habitats (riffle, run, pool, slow run) within those same reaches and distribution of juvenile trout indicated a preference for riffle and run habitat. Most type C reaches in the Mainstem were sparsely populated by juveniles throughout summer. The Middle Fork was devoid of juveniles in early summer. In mid- and late summer, coinciding with the arrival of spawning chinook O. tshawytscha and sockeye salmon O. nerka, most riffle/run reaches in the Middle Fork were occupied by juvenile trout. The steelhead spawning population has declined from an estimated 200-1,000 fish two decades ago to 20-50 fish during this study (1993-1995). Rainbow trout stocks are also apparently low. Monitoring of Copper River fisheries and Gulkana spawning populations and an investigation into other steelhead spawning populations in the Copper River basin are recommended"--3.
Author: Kenneth S. Gates
Publisher:
ISBN:
Category : Fish surveys
Languages : en
Pages : 24
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Author: Ross N. Taylor
Publisher:
ISBN:
Category : Cutthroat trout
Languages : en
Pages : 230
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Author:
Publisher:
ISBN:
Category : Drinking water
Languages : en
Pages : 260
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Author: Theodore W. Pietsch
Publisher:
ISBN: 9780295743745
Category : Nature
Languages : en
Pages : 0
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Book Description
Fishes of the Salish Sea is the definitive guide to the identification and history of the marine and anadromous fishes of Puget Sound and the Straits of Georgia and Juan de Fuca. This comprehensive three-volume set, featuring striking illustrations of the Salish Sea's 260 fish species by noted illustrator Joseph Tomelleri, details the ecology and life history of each species and recounts the region's rich heritage of marine research and exploration. Beginning with jawless hagfishes and lampreys and ending with the distinctive Ocean Sunfish, leading scientists Theodore Wells Pietsch and James Orr present the taxa in phylogenetic order, based on classifications that reflect the most current scientific knowledge. Illustrated taxonomic keys facilitate fast and accurate species identification. These in-depth, thoroughly documented, and yet accessible volumes will prove invaluable to marine biologists and ecologists, natural resource managers, anglers, divers, students, and all who want to learn about, marvel over, and preserve the vibrant diversity of Salish Sea marine life. Comprehensive accounts of 260 fish species Brilliant color plates of all treated species Illustrated taxonomic keys for easy species identification In-depth history of Salish Sea research and exploration
