Stock Status and Escapement Goals for Salmon Stocks in Southeast Alaska Chapter 2: Sockeye Salmon
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This is Chapter 2 of "Stock Status and Escapement Goals for Salmon Stocks in Southeast Alaska," edited by Harold J. Geiger and Scott McPherson. The full text of that document is at: http://www.sf.adfg.state.ak.us/FedAidPDFs/sp04-02.pdf Chapter 2: Sockeye Salmon Stock Status and Escapement Goals in Southeast Alaska by Harold J. Geiger, Margaret A Cartwright, John H. Clark, Jan Conitz, Steven C. Heinl, Kathleen Jensen, Bert Lewis, Andrew J. McGregor, Renate Riffe, Gordon Woods, and Timothy P. Zadina ABOUT THE AUTHORS Harold J. Geiger is a fisheries biologist for the Alaska Department of Fish and Game, Division of Commercial Fisheries, P.O. Box 240020, Douglas, Alaska 99824. Margaret A Cartwright is a fisheries biologist for the Alaska Department of Fish and Game, Division of Commercial Fisheries, P.O. Box 240020, Douglas, Alaska 99824. John H. Clark is the Chief Fisheries Scientist for the Alaska Department of Fish and Game, Division of Commercial Fisheries, P.O. Box 240020, Douglas, Alaska 99824. Jan Conitz is a fisheries biologist for the Alaska Department of Fish and Game, Division of Commercial Fisheries, P.O. Box 240020, Douglas, Alaska 99824. Steven C. Heinl is a fisheries biologist for the Alaska Department of Fish and Game, Division of Commercial Fisheries, 2030 Sea Level Drive, Suite 205, Ketchikan, Alaska 99901. Kathleen Jensen is a fisheries biologist for the Alaska Department of Fish and Game, Division of Commercial Fisheries, P.O. Box 240020, Douglas, Alaska 99824. Bert Lewis is a fisheries biologist for the Alaska Department of Fish and Game, Division of Commercial Fisheries, 2030 Sea Level Drive, Suite 205, Ketchikan, Alaska 99901. Andrew J. McGregor is the regional supervisor for Southeast region of the Alaska Department of Fish and Game, Division of Commercial Fisheries, P.O. Box 240020, Douglas, Alaska 99824. Renate Riffe is a fisheries biologist for the Alaska Department of Fish and Game, Division of Commercial Fisheries, P.O. Box 240020, Douglas, Alaska 99824. Gordon Woods is a fisheries technician for the Alaska Department of Fish and Game, Division of Commercial Fisheries, P.O. Box 49, Yakutat, Alaska 99689-0049. Timothy P. Zadina is a fisheries biologist for the Alaska Department of Fish and Game, Division of Commercial Fisheries, 2030 Sea Level Drive, Suite 205, Ketchikan, Alaska 99901. 85 Chapter 2: Sockeye Salmon TABLE OF CONTENTS List of Tables ..........................................................................................................................................87 List of Figures .........................................................................................................................................87 List of Appendices ..................................................................................................................................87 Abstract ...................................................................................................................................................92 Introduction.............................................................................................................................................92 Stock Status.............................................................................................................................................98 Harvest Estimation..............................................................................................................................98 Escapement Estimation.......................................................................................................................98 Subsistence Monitoring Projects.......................................................................................................100 Stock Status Assessment...................................................................................................................100 Stocks of Concern.............................................................................................................................102 Escapement Goals.................................................................................................................................102 Situk River ........................................................................................................................................103 Lost River..........................................................................................................................................103 Italio River ........................................................................................................................................103 Akwe River .......................................................................................................................................104 Klukshu River (in the Alsek River System)......................................................................................104 East Alsek-Doame Rivers .................................................................................................................104 Chilkoot Lake....................................................................................................................................104 Chilkat Lake......................................................................................................................................104 Redoubt Lake....................................................................................................................................105 Taku River ........................................................................................................................................105 Speel Lake.........................................................................................................................................105 Tahltan Lake Sockeye Salmon..........................................................................................................105 Mainstem Stikine River ....................................................................................................................105 Hugh Smith Sockeye Salmon ...........................................................................................................106 McDonald Lake Sockeye Salmon.....................................................................................................106 Discussion .............................................................................................................................................106 References Cited ...................................................................................................................................108 Appendices............................................................................................................................................111 86 Chapter 2: Sockeye Salmon LIST OF TABLES Table Page 1. Escapement goals for sockeye salmon stocks or stock groups in Southeast Alaska and the Yakutat area..................................................................................... 103 LIST OF FIGURES Figure Page 2.1a. Sockeye salmon systems with long-term stock assessment programs and escapement goals in Southeast Alaska and the Yakutat area. .................................... 94 2.1b. Fishing districts in Southeast Alaska and the Yakutat area........................................ 95 2.2. Commercial catch of sockeye salmon in Southeast Alaska (not including the Yakutat area) from 1878 to 2001. Top, lighter bars show the catch in Southern Southeast Alaska, while dark, lower bars denote catch in Northern Southeast Alaska. ....................................................................................................... 97 LIST OF APPENDICES Appendix Page 2.1. Situk River Sockeye Salmon....................................................................................112 2.1.1. Estimated escapements, harvests, run sizes and exploitation rates for Situk River system sockeye salmon, from 1976 to 2002...................................................114 2.1.2. Estimated total returns (recruits) of Situk River sockeye salmon, brood years 1976 to 2002.............................................................................................................115 2.1.3. Estimated total annual runs of Situk River sockeye salmon, from 1976 to 2002.....116 2.1.4. Estimated exploitation rates for Situk River sockeye salmon, from 1976 to 2002..........................................................................................................................116 2.1.5. Estimated total escapements of Situk River sockeye salmon, from 1976 to 2002..........................................................................................................................117 2.1.6. Estimated stock-recruit relationship for Situk River sockeye salmon, brood years 1976 to 1997. ..................................................................................................117 2.2. Lost River Sockeye Salmon. ....................................................................................118 2.2.1. Estimated escapements, harvests, run sizes, and exploitation rates for Lost River system sockeye salmon, from 1972 to 2002. .................................................120 2.2.2. Estimated total runs of Lost River sockeye salmon, from 1972 to 2002..................121 2.2.3. Estimated exploitation rate of Lost River sockeye salmon, from 1972 to 2002.......121 2.2.4. Peak escapements of Lost River sockeye salmon, from 1972 to 2002.....................122 2.2.5. Estimated