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The 2005 Coastal Cutthroat Trout Symposium

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The 2005 Coastal Cutthroat Trout Symposium THE 2005 COASTAL CUTTHROAT TROUT SYMPOSIUM Status, Management, Biology, and Conservation Major support for the 2005 Coastal Cutthroat Trout Symposium was provided by Oregon Chapter of the Pacific States Marine U.S. Fish and Wildlife American Fisheries Society Fisheries Commission Service Additional support for the symposium and for publication of these proceedings was provided by North Pacific International Chapter AFS Humboldt Chapter AFS Alaska Chapter AFS American Fisheries Society South Sound Flyfishers Clark-Skamania Flyfishers Lower Columbia Flyfishers Washington Fly Fishing Club Port Townsend Chapter of Trout Unlimited Fine Art and Books for Raffle and Auction provided by Washington Trout G. Loomis Bruce Ferguson Les Johnson THE 2005 COASTAL CUTTHROAT TROUT SYMPOSIUM Status, Management, Biology, and Conservation Proceedings of a Workshop Fort Worden State Park Port Townsend, Washington September 29-October 1, 2005 Edited by Patrick J. Connolly, Thomas H. Williams, and Robert E. Gresswell Published by Oregon Chapter of the American Fisheries Society Portland, Oregon 2008 Suggested citation formats: Entire book Connolly, P. J., T. H. Williams, and R. E. Gresswell, editors. 2008. The 2005 coastal cutthroat trout symposium: status, management, biology, and conservation. Oregon Chapter, American Fisheries Society, Portland. Article within book Anderson, J. D. 2008. Coastal cutthroat trout in Washington state: status and management. Pages 11-23 in P. J. Connolly, T. H. Williams, and R. E. Gresswell, editors. The 2005 coastal cutthroat trout symposium: status, management, biology, and conservation. Oregon Chapter, American Fisheries Society, Portland. Library of Congress Control Number: 2008941465 ISBN 978-0-6152-3399-4 © Copyright by the Oregon Chapter American Fisheries Society, 2008 Cover Illustration © Mark A Jessop, Troutfin Studio, 2008 AFS Publishing Project Manager Doug Young Final editing and layout Scott Bischke MountainWorks, Incorporated (www.emountainworks.com) Address orders to Pacific States Marine Fisheries Commission c/o 2005 Coastal Cutthroat Trout Symposium Proceedings 205 Southeast Spokane Street, Suite 100 Portland, Oregon 97202 (503) 595-3100 CONTENTS Dedication ................................................................................................................................................................................................ix Introduction ..............................................................................................................................................................................................xi Editors’ Note ..........................................................................................................................................................................................xiii PART ONE : STATUS , TRENDS , AND MANAGE M ENT (SE SS ION CHAIR ROGER HARDING ) Summary of 1998 Coast Wide Coastal Cutthroat Trout Status Review Conducted by the National Marine Fisheries Service Orlay W. Johnson, Mary H. Ruckelshaus, W. Stewart Grant, F. William Waknitz, Ann M. Garrett, Gregory J. Bryant, Kathleen Neely, and Jeffrey J. Hard ................................................................................................................... 3 The Status of Four Species Management Units of Coastal Cutthroat Trout in Oregon Kevin Goodson ................................................................................................................................................................................... 5 Coastal Cutthroat Trout in Washington State: Status and Management Jon D. Anderson .............................................................................................................................................................................. 11 The Status of Coastal Cutthroat Trout in British Columbia Allan B. Costello .............................................................................................................................................................................. 24 The Status and Management of Coastal Cutthroat Trout in Alaska Peter Bangs and Roger Harding ..................................................................................................................................................... 37 PART TWO : BIOLOGY (SE SS ION CHAIR RON PTOLEMY ) The Influence of Spawning Pacific Salmon on the Stable Isotope Composition, Feeding Behavior, and Caloric Intake of Coastal Cutthroat Trout Christopher S. Ellings, C. Jeff Cederholm, and Gerardo Chin-Leo ................................................................................................ 47 Effects of Landscape Pattern on the Distribution of Coastal Cutthroat Trout in Headwater Catchments in Western Oregon Christian E. Torgersen, Robert E. Gresswell, Douglas S. Bateman, and David P. Hockman-Wert ................................................ 58 The Role of Barriers in the Abundance and Persistence of Coastal Cutthroat Trout in the Columbia River Gorge Patrick J. Connolly and Sally T. Sauter ........................................................................................................................................... 60 Emigration Rates of Coastal Cutthroat Trout in Headwater Catchments of Western Oregon Douglas S. Bateman, Robert E. Gresswell, and David P. Hockman-Wert ....................................................................................... 62 Seaward Migration of Coastal Cutthroat Trout Oncorhynchus clarkii clarkii from Four Tributaries of the Columbia River Joseph Zydlewski, Jeff Johnson, John Brunzell, Jeff Hogle, Shaun Clements, Mark Karnowski, and Carl Schreck...................... 65 Adult Coastal Cutthroat Trout Movement and Habitat Use in the Lower Columbia River J. Michael Hudson, Jeffrey R. Johnson, Jeff Hogle, John Brunzell, and Joe Zydlewski ................................................................. 75 Habitat Utilization and Seasonal Movements of Radio-Tagged Copper River Delta Coastal Cutthroat Trout David Saiget ..................................................................................................................................................................................... 77 Coastal Cutthroat Trout Ecohydrology and Habitat Use in Irely Creek, Washington Robert L. Vadas, Jr., Hal A. Beecher, Steve N. Boessow, and Kathleen A. Enseñat ........................................................................ 85 v Factors Influencing the Distribution of Coastal Cutthroat Trout in a Cascade Mountain Stream Marc S. Novick, Robert E. Gresswell, and Sherri L. Johnson ......................................................................................................... 87 Biomass Benchmarks for Coastal Cutthroat Trout Oncorhynchus clarkii clarkii: Can Ecoregions be Used as a Place-based Standard for Abundance? Ronald A. Ptolemy ........................................................................................................................................................................... 89 Errors in Visual Identifications of Juvenile Steelhead, Coastal Cutthroat Trout, and Their Hybrids Hans N. Voight, David G. Hankin, and Eric J. Loudenslager ......................................................................................................... 92 Estimating Abundance of Juvenile Steelhead in the Presence of Coastal Cutthroat Trout and Steelhead-Cutthroat Hybrids: A Two-Phase Approach David G. Hankin, Qian-Li Xue, and Hans Voight ........................................................................................................................... 94 Status, Habitat Relations, and Interspecific Species Associations of Coastal Cutthroat Trout in Two Managed Tributaries to the Smith River, California Chris Howard .................................................................................................................................................................................. 96 Demographics of Coastal Cutthroat Trout Oncorhynchus clarkii clarkii in Prairie Creek, California Walter G. Duffy and Eric P. Bjorkstedt .......................................................................................................................................... 100 Utility of Scales to Estimate Age and Growth Characteristics of Coastal Cutthroat Trout in Isolated Headwater Streams of Western Oregon William G. Rehe and Robert E. Gresswell ..................................................................................................................................... 107 Geographic Variation in Genetic and Meristic Characters of Coastal Cutthroat Trout Thomas H. Williams and Gordon H. Reeves ................................................................................................................................. 110 Genetic Variation and Geographic Structure of Coastal Cutthroat Trout Oncorhynchus clarkii clarkii at the Northern Extent of Their Range, Prince William Sound, Alaska Kitty E. Griswold, Kenneth P. Currens, and Gordon H. Reeves .................................................................................................... 112 Cutts Above the Rest: Waterfall-Isolated Coastal Cutthroat Trout, Microsatellite Genetic Diversity, and Watershed-Scale Habitat Features Troy J. Guy, Robert E. Gresswell, and Michael. A. Banks............................................................................................................. 114 Drawing the Circles: Nested Analysis of Genetic Variation in Coastal Cutthroat Trout and
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