Biological Escapement Goal for Klukshu River Chinook Salmon
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Fishery Manuscript No. 98-2 Biological Escapement Goal for Klukshu River Chinook Salmon by Scott A. McPherson, Peter Etherton, and John H. Clark November 1998 Alaska Department of Fish and Game Division of Sport Fish -ii- Symbols and Abbreviations The following symbols and abbreviations, and others approved for the Système International d'Unités (SI), are used in Division of Sport Fish Fishery Manuscripts, Fishery Data Series Reports, Fishery Management Reports, and Special Publications without definition. All others must be defined in the text at first mention, as well as in the titles or footnotes of tables and in figures or figure captions. Weights and measures (metric) Mathematics, statistics, fisheries centimeter cm General alternate hypothesis HA deciliter dL All commonly accepted e.g., Mr., Mrs., base of natural e gram g abbreviations. a.m., p.m., etc. logarithm hectare ha All commonly accepted e.g., Dr., Ph.D., catch per unit effort CPUE professional titles. R.N., etc. kilogram kg coefficient of variation CV and & 2 kilometer km common test statistics F, t, , etc. at @ liter L confidence interval C.I. Compass directions: meter m correlation coefficient R (multiple) east E metric ton mt correlation coefficient r (simple) north N milliliter ml covariance cov south S millimeter mm degree (angular or ° west W temperature) Weights and measures (English) Copyright degrees of freedom df cubic feet per second ft3/s Corporate suffixes: divided by ÷ or / (in foot ft Company Co. equations) gallon gal Corporation Corp. equals = inch in Incorporated Inc. expected value E mile mi Limited Ltd. fork length FL ounce oz et alii (and other et al. greater than > pound lb people) greater than or equal to O quart qt et cetera (and so forth) etc. harvest per unit effort HPUE yard yd exempli gratia (for e.g., less than < example) Spell out acre and ton. less than or equal to ? id est (that is) i.e., logarithm (natural) ln Time and temperature latitude or longitude lat. or long. logarithm (base 10) log monetary symbols $, ¢ day d logarithm (specify base) log2, etc. (U.S.) degrees Celsius °C mideye-to-fork MEF months (tables and Jan,...,Dec degrees Fahrenheit °F figures): first three minute (angular) ' hour (spell out for 24-hour clock) h letters multiplied by x minute min number (before a # (e.g., #10) not significant NS second s number) null hypothesis HO Spell out year, month, and week. pounds (after a number) # (e.g., 10#) percent % registered trademark probability P Physics and chemistry trademark probability of a type I all atomic symbols United States U.S. error (rejection of the alternating current AC (adjective) null hypothesis when true) ampere A United States of USA probability of a type II calorie cal America (noun) error (acceptance of direct current DC U.S. state and District use two-letter of Columbia abbreviations the null hypothesis hertz Hz abbreviations (e.g., AK, DC) when false) horsepower hp second (angular) " hydrogen ion activity pH standard deviation SD parts per million ppm standard error SE parts per thousand ppt, ‰ standard length SL volts V total length TL watts W variance Var FISHERY MANUSCRIPT NO. 98-2 BIOLOGICAL ESCAPEMENT GOAL FOR KLUKSHU RIVER CHINOOK SALMON by Scott A. McPherson Alaska Department of Fish and Game, Division of Sport Fish, Douglas, Alaska Peter Etherton Canadian Department of Fisheries and Oceans, Whitehorse, Yukon Territory, Canada and John H. Clark Alaska Department of Fish and Game, Division of Commercial Fisheries Management and Development, Helena, Montana Alaska Department of Fish and Game Division of Sport Fish Anchorage, Alaska November 1998 Development of this manuscript was partially financed by the Federal Aid in Sport Fish Restoration Act (16 U.S.C. 777-777K) under Projects F-10-12 and F-10-13, Job No. S-1-3. The Fishery Manuscript series was established in 1987 for the publication of technically oriented results of several years’ work undertaken on a project to address common objectives, provide an overview of work undertaken through multiple projects to address specific research or management goal(s), or new and/or highly technical methods. Fishery Manuscripts are intended for fishery and other technical professionals. Distribution is to state and local publication distribution centers, libraries and individuals and, on request, to other libraries, agencies, and individuals. This publication has undergone editorial and peer review. Scott A. McPherson Alaska Department of Fish and Game, Division of Sport Fish, Region I Douglas Island Center Building, Douglas, AK 99824-0020, USA Peter Etherton Canadian Department of Fisheries and Oceans Suite 100, 419 Range Road, Whitehorse, Yukon Territory Y1A3V1 John H. Clark Alaska Department of Fish and Game, Division of Commercial Fisheries Management and Development 4240 Jimtown Road, Helena MT 59602,USA This document should be cited as: McPherson, Scott A., Peter Etherton, and John H. Clark. 1998. Biological escapement goal for Klukshu River chinook salmon. Alaska Department of Fish and Game, Fishery Manuscript No. 98-2, Anchorage. The Alaska Department of Fish and Game administers all programs and activities free from discrimination on the basis of sex, color, race, religion, national origin, age, marital status, pregnancy, parenthood, or disability. For information on alternative formats available for this and other department publications, contact the department ADA Coordinator at (voice) 907-465-4120, or (TDD) 907-465-3646. Any person who believes s/he has been discriminated against should write to: ADF&G, P.O. Box 25526, Juneau, AK 99802-5526, or O.E.O., U.S. Department of the Interior, Washington, DC 20240. TABLE OF CONTENTS Page LIST OF TABLES.............................................................................................................................................. ii LIST OF FIGURES.............................................................................................................................................. iv PREFACE............................................................................................................................................................. v AUTHORS ........................................................................................................................................................... vi ACKNOWLEDGMENTS .................................................................................................................................... vi ABSTRACT ........................................................................................................................................................ 1 INTRODUCTION............................................................................................................................................... 2 BACKGROUND AND AVAILABLE DATA .................................................................................................... 6 Life History of Alsek and Klukshu Chinook Salmon....................................................................................... 7 Description of Klukshu Weir and Other Escapement Programs...................................................................... 8 Description of Canadian and U.S. Fisheries .................................................................................................... 11 Canadian Aboriginal Fishery ....................................................................................................................... 11 Canadian Sport Fishery................................................................................................................................ 13 U.S. Alsek Commercial and Subsistence/Personal Use Fisheries................................................................ 16 U.S. Yakutat Bay Commercial and Subsistence/Personal Use Fisheries ..................................................... 22 U.S. Troll Fishery ........................................................................................................................................ 25 SPAWNER-RECRUIT ANALYSIS ................................................................................................................... 28 Age Composition Estimates............................................................................................................................. 29 Klukshu River Chinook Salmon Escapements................................................................................................. 34 Harvests of Klukshu Origin Chinook Salmon.................................................................................................. 34 Total Runs of Klukshu River Chinook Salmon................................................................................................ 37 Brood Year Returns of Klukshu River Chinook Salmon ................................................................................. 42 Spawner-recruit Parameters............................................................................................................................. 43 Bootstrap Analysis of Spawner-recruit Parameters.......................................................................................... 49 Markovian Tabulation of Spawners and Total Returns .................................................................................. 52 Minimized Loss Approach............................................................................................................................... 58 DISCUSSION.....................................................................................................................................................