IPHC Blue Book
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International Pacifi c Halibut Commission Eighty-fi fth Annual Meeting Schedule of Sessions ................................................................................................................2 Public Session Agenda ............................................................................................................3 The Pacifi c halibut fi shery, 2008 ............................................................................................5 Heather L. Gilroy Analysis of PIT tag recoveries through 2008 ........................................................................21 Raymond A. Webster Removal fi shing to estimate catch probability: preliminary data analysis ........................27 Raymond A. Webster Exploring effects of fi shing and migration on the distribution of Pacifi c halibut .............37 Juan L. Valero and Steven R. Hare IPHC Biomass Apportionment Workshop summary and responses to signifi cant questions arising at the Workshop .........................................................................................................51 Steven R. Hare, Ray A. Webster, Juan L. Valero, and Bruce M. Leaman Assessment of the Pacifi c halibut stock at the end of 2008 ..................................................83 Steven R. Hare and William G. Clark IPHC Staff regulatory proposals: 2009 .................................................................................137 Bruce M. Leaman and Heather L. Gilroy Appendix I. IPHC Research program: Review of 2008 projects and preliminary proposals for 2009 ....................................................................................................................................143 IPHC Staff Appendix II. Tide predictions ................................................................................................171 1 2009 IPHC ANNUAL MEETING HANDOUT International Pacifi c Halibut Commission Eighty-fi fth Annual Meeting Vancouver Marriott Pinnacle Downtown Hotel Vancouver, B.C. January 12-16, 2009 Schedule of Sessions Monday - January 12 Room Location p.m. 5:00 - 8:30 United States Delegation Meeting Pinnacle III 5:00 - 7:30 Canadian Delegation Meeting Pinnacle I & II Tuesday - January 13 a.m. 8:00 - 9:00 IPHC Executive Session I Shaughnessy Salon 9:00 - 1:00 Public Session I Pinnacle I & II p.m. 2:30 - 5:00 IPHC Administrative Session I Shaughnessy Salon 2:30 - 5:00 Conference Board (CB) Session I Pinnacle II & III 2:30 - 5:00 Processor Advisory Group (PAG) I Point Grey 7 :00 - 9:30 IPHC Reception Pinnacle Foyer & I (Note: Reception open to all IPHC meeting participants) Wednesday - January 14 a.m. 8:30 - 5:00 IPHC Administrative Session II Shaughnessy Salon 8:30 - 5:00 Conference Board Session II Pinnacle II & III 8:30 - 5:00 Processor Advisory Group II Point Grey p.m. 5:30 - 7:30 HANA Reception Renaissance Harbourside Ballroom (Note: Reception open to commercial industry and agency staff only) Thursday - January 15 a.m. 8:30 - 9:30 IPHC, CB, and PAG Joint Session Pinnacle II & III 9:30 - 12:00 IPHC Administrative Session III Shaughnessy Salon p.m. 1:30 - 5:00 IPHC Administrative Session IV Shaughnessy Salon Friday - January 16 a.m. 7:30 - 8:30 IPHC Executive Session II Pinnacle I 9:00 - 11:00 IPHC Meeting (public welcome) Pinnacle I • IPHC offi ce is located in Hollyburn • Breakout room available in Kitsilano (contact IPHC staff for availability) 2 2009 IPHC ANNUAL MEETING HANDOUT International Pacifi c Halibut Commission Eighty-fi fth Annual Meeting Vancouver Marriott Pinnacle Downtown Hotel Vancouver, B.C. January 12-16, 2009 Public Session Agenda January 13, 2009 Pinnacle I & II 9:00 a.m. Opening of Meeting Chairperson and Vice-chairperson opening remarks Introductions 9:15 Director’s Remarks Staff Presentations The fi shery PIT tagging and removal experiment Impact of migration and local removals on exploitable biomass Questions and issues arising from Apportionment Workshop Stock assessment and harvest policy Staff regulatory proposals: 2009 10:15 Coffee 10:30 Staff presentations continued 12:00 Questions and discussion 1:00 p.m. Announcements and Adjournment 7:00-9:30 IPHC Reception (no host) – Pinnacle Foyer & I 3 2009 IPHC ANNUAL MEETING HANDOUT Notes 4 2009 IPHC ANNUAL MEETING HANDOUT The Pacifi c halibut fi shery, 2008 Heather L. Gilroy The removals of halibut off the Pacifi c coast totaled 84 million pounds in 2008. This is lower than in recent yeas as the catch has exceeded 90 million pounds annually since 1997. The removals include commercial catch, sport catch, bycatch mortality, personal use, wastage, and International Pacifi c Halibut Commission (IPHC or Commission) research catch (Table 1). In addition to data compiled by the IPHC, other sources of halibut data include federal and state agencies. All 2008 data are net weight and considered preliminary at this time. When the Commission was established in 1923 to manage and conserve the halibut resource, the commercial fi shery, which dates back to the late 1800s, was the primary source of removals. Currently, the commercial catch continues to represent the largest removal. Through the years, estimates of other removals have been added progressively: bycatch mortality in the 1960s, sport catch in the late 1970s, wastage in the 1980s, and personal use (subsistence) in the 1990s. All legal and sublegal-sized halibut removals are estimated and tracked as part of the total removals and are accounted for in the IPHC’s harvest policy and stock assessment. The legal-size limit for the commercial halibut fi shery is 32 inches or greater. Accurate reporting of removals is essential to stock assessment and for determining the recommended allowable catch. Removals are estimated most accurately using a scale weight, such as with the commercial fi shery, or a scientifi cally-based estimation procedure. Over the years, the Commission has worked with different agencies to improve the estimation procedures in attempting to accurately account for all removals. Personal use removals include the Washington State treaty tribal ceremonial and subsistence fi shery, the British Columbia Food, Social, and Ceremonial (FSC) fi shery, and the Alaska subsistence fi shery. The FSC fi shery catch had been estimated at 300,000 pounds since 1993 but in 2008 a new estimate of 405,000 pounds was provided by the Canadian Department of Fisheries and Oceans (DFO). The new FSC catch estimate is a sum of all allocations within the FSC communal licenses including recent treaty settlements (Gary Logan, DFO, pers. comm.). The Alaska subsistence has been just over 1 million pounds since the implementation of the program in 2003. Wastage accounts for the loss of halibut from the commercial fi shery. It includes legal-sized halibut killed by lost and abandoned longline gear and a proportion of the sublegal-sized halibut that are discarded due to regulation and die. In 2008, the removals for commercial catch, sport catch, bycatch mortality, personal use, wastage, and IPHC research were 57.9, 10.8, 10.6, 1.5, 2.5, and 0.7 million pounds respectively. This report reviews commercial and sport fi sheries, bycatch mortality estimates, and progress on the allocation programs by each country. Allocation programs and totals The authority for allocation among the user groups in each country is the responsibility of each national government. Currently, both the United States and Canadian governments have allocation plans within a single regulatory area or within smaller local areas. For Area 2B, DFO has had an allocation framework for the commercial and recreational sectors since 2005, where the recreational sector is allocated a 12 percent “ceiling” of a combined commercial/recreational 5 2009 IPHC ANNUAL MEETING HANDOUT catch limit. When managed to the allocation ceilings, both sectors’ catch will fl uctuate with stock abundance. For 2008, the Commission adopted a catch limit for Area 2B of 9.0 million pounds for the combined recreational and commercial fi sheries. An additional 19,000 pounds was added for the projected commercial fi shery wastage, resulting in a total catch limit of 9.019 million pounds. DFO then allocated to the commercial fl eet 88 percent of the total catch limit and reduced it by 19,000 pounds to account for the wastage, which resulted in the commercial allocation of 7,917,720 pounds. In 2007, the underage/overage program resulted in a 337,674 pound surplus roll-over to the 2008 catch limit, for an adjusted 2008 commercial fi shery catch limit of 8,255,394 pounds. The remaining 1.082 million pounds of the combined catch limit was allocated to the recreational sector. The 2008 combined commercial and sport catch was 8,000 pounds under the combined adjusted catch limit (Table 2). For managing the sport charter fi sheries in Areas 2C and 3A, the North Pacifi c Fishery Management Council (NPFMC) adopted a Guideline Harvest Level (GHL) program, which went into effect in September, 2003. The GHL program included a provision that the GHL declines by specifi ed increments if halibut abundance declines, but the GHL will not increase above the original level. In 2008, the Area 2C GHL of 931,000 pounds was exceeded by over 100 percent and the Area 3A sport charter fi shery harvest was very close to the GHL (Table 3). The NPFMC has recently adopted a Catch Sharing Plan (CSP) to allocate between the commercial and sport charter sectors in Areas 2C and 3A. The CSP has specifi c allocations which vary depending on the magnitude of a combined commercial/sport charter catch limit adopted by the Commission. It is unlikely that any plan will be