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Comprehensive Discards in the Groundfish Fisheries of the Bering Sea/Aleutian Islands and the Gulf of Alaska, 1998–2000

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Comprehensive Discards in the Groundfish Fisheries of the Bering Sea/Aleutian Islands and the Gulf of Alaska, 1998–2000 Regional Information Report No. 5J10-04 Discards in the Groundfish Fisheries of the Bering Sea/Aleutian Islands and the Gulf of Alaska, 1998– 2000 by Janet Smoker December 2010 Alaska Department of Fish and Game Division of Commercial Fisheries Symbols and Abbreviations The following symbols and abbreviations, and others approved for the Système International d'Unités (SI), are used without definition in the following reports by the Divisions of Sport Fish and of Commercial Fisheries: Fishery Manuscripts, Fishery Data Series Reports, Fishery Management Reports, Special Publications and the Division of Commercial Fisheries Regional Reports. All others, including deviations from definitions listed below, are noted in the text at first mention, as well as in the titles or footnotes of tables, and in figure or figure captions. Weights and measures (metric) General Measures (fisheries) centimeter cm Alaska Administrative fork length FL deciliter dL Code AAC mideye-to-fork MEF gram g all commonly accepted mideye-to-tail-fork METF hectare ha abbreviations e.g., Mr., Mrs., standard length SL kilogram kg AM, PM, etc. total length TL kilometer km all commonly accepted liter L professional titles e.g., Dr., Ph.D., Mathematics, statistics meter m R.N., etc. all standard mathematical milliliter mL at @ signs, symbols and millimeter mm compass directions: abbreviations east E alternate hypothesis HA Weights and measures (English) north N base of natural logarithm e cubic feet per second ft3/s south S catch per unit effort CPUE foot ft west W coefficient of variation CV gallon gal copyright © common test statistics (F, t, χ2, etc.) inch in corporate suffixes: confidence interval CI mile mi Company Co. correlation coefficient nautical mile nmi Corporation Corp. (multiple) R ounce oz Incorporated Inc. correlation coefficient pound lb Limited Ltd. (simple) r quart qt District of Columbia D.C. covariance cov yard yd et alii (and others) et al. degree (angular ) ° et cetera (and so forth) etc. degrees of freedom df Time and temperature exempli gratia expected value E day d (for example) e.g. greater than > degrees Celsius °C Federal Information greater than or equal to ≥ degrees Fahrenheit °F Code FIC harvest per unit effort HPUE degrees kelvin K id est (that is) i.e. less than < hour h latitude or longitude lat. or long. less than or equal to ≤ minute min monetary symbols logarithm (natural) ln second s (U.S.) $, ¢ logarithm (base 10) log months (tables and logarithm (specify base) log2, etc. Physics and chemistry figures): first three minute (angular) ' all atomic symbols letters Jan,...,Dec not significant NS alternating current AC registered trademark ® null hypothesis HO ampere A trademark ™ percent % calorie cal United States probability P direct current DC (adjective) U.S. probability of a type I error hertz Hz United States of (rejection of the null horsepower hp America (noun) USA hypothesis when true) α hydrogen ion activity pH U.S.C. United States probability of a type II error (negative log of) Code (acceptance of the null parts per million ppm U.S. state use two-letter hypothesis when false) β parts per thousand ppt, abbreviations second (angular) " (e.g., AK, WA) ‰ standard deviation SD volts V standard error SE watts W variance population Var sample var REGIONAL INFORMANTION REPORT NO. 5J10-04 DISCARDS IN THE GROUNDFISH FISHERIES OF THE BERING SEA/ALEUTIAN ISLANDS AND THE GULF OF ALASKA, 1998–2000 By Janet Smoker Fisheries Information Services, 20007 Cohen Drive, Juneau Alaska 99801 Alaska Department of Fish and Game Division of Commercial Fisheries 1255 W 8th St. P.O Box 115526, Juneau, AK 99811-5526 December 2010 The Regional Information Report Series was established in 1987 and was redefined in 2006 to meet the Division of Commercial Fisheries regional need for publishing and archiving information such as project operational plans, area management plans, budgetary information, staff comments and opinions to Board of Fisheries proposals, interim or preliminary data and grant agency reports, special meeting or minor workshop results and other regional information not generally reported elsewhere. Reports in this series may contain raw data and preliminary results. Reports in this series receive varying degrees of regional, biometric and editorial review; information in this series may be subsequently finalized and published in a different department reporting series or in the formal literature. Please contact the author or the Division of Commercial Fisheries if in doubt of the level of review or preliminary nature of the data reported. Regional Information Reports are available through the Alaska State Library and on the Internet at http://www.adfg.alaska.gov/sf/publications/ Janet Smoker Fisheries Information Services, 20007 Cohen Drive, Juneau, AK 99801, USA For Alaska Department of Fish and Game, Division of Commercial Fisheries, 1255 W 8th St. P.O Box 115526, Juneau, AK 99811-5526 This document should be cited as: Smoker, J. 2010. Comprehensive discards in the groundfish fisheries of the Bering Sea/Aleutian Islands and the Gulf of Alaska, 1998–2000. Alaska Department of Fish and Game, Regional Report Series 5J10-04, Anchorage. The Alaska Department of Fish and Game (ADF&G) administers all programs and activities free from discrimination based on race, color, national origin, age, sex, religion, marital status, pregnancy, parenthood, or disability. The department administers all programs and activities in compliance with Title VI of the Civil Rights Act of 1964, Section 504 of the Rehabilitation Act of 1973, Title II of the Americans with Disabilities Act (ADA) of 1990, the Age Discrimination Act of 1975, and Title IX of the Education Amendments of 1972. If you believe you have been discriminated against in any program, activity, or facility please write: ADF&G ADA Coordinator, P.O. Box 115526, Juneau AK 99811-5526 U.S. Fish and Wildlife Service, 4040 N. Fairfax Drive, Suite 300 Webb, Arlington VA 22203 Office of Equal Opportunity, U.S. Department of the Interior, Washington DC 20240 The department’s ADA Coordinator can be reached via phone at the following numbers: (VOICE) 907-465-6077, (Statewide Telecommunication Device for the Deaf) 1-800-478-3648, (Juneau TDD) 907-465-3646, or (FAX) 907-465-6078 For information on alternative formats and questions on this publication, please contact: ADF&G, Division of Commercial Fisheries, P.O. Box 115526, Juneau AK 99811 (907)465-4210. Discards in the Groundfish Fisheries of the Bering Sea/Aleutian Islands and the Gulf of Alaska, 1998-2000 Prepared for the State of Alaska Department of Fish & Game By Fisheries Information Services 20007 Cohen Drive Juneau, Alaska 99801 [email protected] May 2002 Discards in the North Pacific Groundfish Fisheries, 1998-2000 1.0 Introduction This report updates the 1998 Alaska Department of Fish and Game (ADF&G) sponsored report, Discards in the North Pacific Groundfish Fisheries 1995-1997. It documents the amounts and sources of groundfish, crab, halibut, herring and salmon discards in commercial groundfish fisheries in the Bering Sea/Aleutian Islands (BSAI) and the Gulf of Alaska (GOA) during calendar years 1998, 1999 and 2000. Appendix 1-3 includes tables for the BSAI target fisheries, Appendix 4-6 has tables for GOA target fisheries. A new section, Appendix 7-9, includes tables for Community Development Quota (CDQ) groundfish fisheries. A summary table below shows the total groundfish harvest, groundfish discards and prohibited spe­ cies discards for years 1997 through 2000. As predicted by the authors of the 1998 report, implementation of the Improved Retention/Improved Utilization program contributed to substantial declines (rate in 1998 was 44% of that in 1997) in groundfish discards. TABLE 1. ALASKA SUMMARY 1997 1998 1999 2000 Total Groundfish Catch (mt) 1,940,764 1,774,489 1,527,219 1,672,261 Total Groundfish Discards (mt) 292,413 149,606 148,946 150,576 Total Groundfish Discards (thou. lbs) 644,654 329,822 328,368 331,961 Percent Groundfish Discarded 15.1% 8.4% 9.8% 9.0% Halibut Mortality (thou. lbs) 14,620 14,087 14,414 13,558 Herring (thou. pounds) 2,515 1,797 1,989 1,137 Chinook Salmon (numbers) 63,231 70,000 43,492 33,825 Other Salmon (numbers) 66,578 81,580 53,792 68,532 Red King Crab (numbers) 74,634 49,191 94,022 115,682 Other King Crab (numbers) 29,093 43,220 61,879 36,914 Bairdi Tanner Crab (numbers) 2,262,152 1,643,587 996,764 1,254,100 Other Tanner Crab (numbers) 5,654,941 4,633,578 1,604,354 3,314,970 -1- Discards in the North Pacific Groundfish Fisheries, 1998-2000 2.0 Data sources and Methodology As in previous reports, the National Marine Fisheries Service (NMFS) “best blend” data provided by the Alaska Regional Office was used as the data source. A description of the derivation of this data can be found at http://www.fakr.noaa.gov/sustainablefisheries/blend.htm Numbers may differ slightly from those in NMFS annual reports posted on NMFS Alaska Fisheries Science Center webpages for several reasons. First, slightly different methodologies were used in assigning targets in the data provided to the author (that data is in the format used for in-season fish­ eries management). Second, small amounts of catch in unassigned categories were not included in this report; and third, data for categories with fewer than three processors were not provided to the author due to NMFS confidentiality constraints. 2.1 The assumed mortality rate for all species except halibut continued to be 100%. Insufficient studies have been completed to determine an accurate crab mortality rate. Halibut mortality rates are determined by the International Pacific Halibut Commission (IPHC), based on observer sampling data from recent years. Information on these rates can be found at http://www.iphc.washington.edu/halcom/pubs/rara/1999rara/99rara06.pdf 3.0.
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