Fraser River Sockeye Fisheries and Fisheries Management - Cohen ...

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Table 3 provides the annual estimates of the number of Fraser sockeye harvested inCanadian First Nation fisheries. The official estimate of the total harvest of Frasersockeye in First Nation fisheries was extracted from PSC annual reports (e.g., PSC 2008).Additional information from DFO was used to parse the total harvest into each of themajor fishery components (Ionson 2009; Bert Ionson, retired DFO Aboriginal FisheriesProgram Manager, Vancouver, B.C., pers. comm.). The overall ratings for sockeye catchestimates for First Nation fisheries were: “Good” for accuracy, “Unknown” for precisionand “Medium” for reliability (Table 4). Catch monitoring for First Nation fisheries wasrated having higher quality than commercial fisheries because of the extensive efforts toverify effort and catch rates using independent surveys instead of reports from fishers(Alexander 2002). Regulations for mandatory landing sites for “Pilot Sales” andEconomic Opportunity (EO) fisheries since 1993, and separation of FSC and EO fisheriessince 2004, have substantially improved the reliability of catch estimates for EO fisheries.Details regarding each of these fisheries and the rationale for our evaluations of catchestimation methods are presented in the following sections.23
Table 3 Annual estimates of the harvest of Fraser sockeye in First Nations fisheriesin Canadian marine waters and the upper and lower Fraser River, 1986-2009 (extracted from PSC annual reports and DFO records).Year Marine 1 Sawmill 2FraserbelowFirst Nation FSC FisheriesFraseraboveSawmill 3FSCTotal 4First Nation EO FisheriesMarineFraserbelowSawmill 2FraseraboveSawmillFirstNationTotal 11986 21,000 555,000 555,0001987 40,000 508,000 508,0001988 7,000 423,000 423,0001989 39,000 611,000 611,0001990 114,000 923,000 923,0001991 91,000 697,000 697,0001992 52,000 5,763 53,656 111,419 308,581 420,0001993 185,000 67,596 158,526 411,122 621,878 1,033,0001994 183,000 30,896 328,137 542,033 568,967 1,111,0001995 32,000 120,336 313,955 466,291 457,709 924,0001996 76,000 12,158 218,035 306,193 447,807 754,0001997 121,000 5,660 282,153 408,813 787,187 1,196,0001998 200,000 366,015 204,883 770,898 73,102 844,0001999 95,000 137,205 114,795 347,000 0 347,0002000 91,000 422,850 340,436 854,286 22,714 877,0002001 184,000 182,659 286,746 653,405 194,595 848,0002002 265,000 532,013 238,716 1,035,729 119,271 1,155,0002003 217,500 407,651 179,249 804,400 0 804,4002004 256,200 223,912 142,573 622,685 267,815 890,5002005 266,554 452,573 231,587 950,714 5,524 956,2382006 298,000 166,222 224,675 688,897 456,103 1,145,0002007 42,898 72,919 81,003 196,820 46 196,8662008 31,861 270,817 144,599 447,277 0 447,2772009 9,918 21,633 40,202 71,753 47 71,800Averages1986-91 52,000 619,500 619,5001992-00 115,000 129,831 223,842 468,673 365,327 834,0002001-09 174,659 258,933 174,372 607,964 115,933 723,898Percentages1986-91 8% 100% 0% 0% 0% 100%1992-00 14% 16% 27% 56% 0% 44% 0% 100%2001-09 24% 36% 24% 84% 0% 16% 0% 100%1 Estimates from annual PSC Fraser Panel Reports or databases.2 Estimates from DFO records (Bert Ionson, pers. comm.)3 Estimates derived by subtraction (FSC Total - Marine - Fraser below Sawmill)4 Estimates derived by subtraction (First Nation Total - First Nation Commercial)24
Page 2 and 3: Fraser River Sockeye Fisheriesand F
Page 4 and 5: EXECUTIVE SUMMARY1. Catch Monitorin
Page 6 and 7: implement harvest rate ceilings to
Page 8 and 9: Table of ContentsEXECUTIVE SUMMARY
Page 10 and 11: List of TablesTable 1 Annual estima
Page 12 and 13: List of FiguresFigure 1 Fraser sock
Page 14 and 15: Figure 21 Estimates of total catch,
Page 16 and 17: List of AppendicesAppendix A Statem
Page 18 and 19: used to (1) estimate catch for each
Page 20 and 21: FISHERIES HARVESTINGOverview of Fis
Page 22 and 23: Figure 1 Fraser sockeye marine migr
Page 24 and 25: Table 2 Summary of available inform
Page 28 and 29: Table 4 Summary of available inform
Page 30 and 31: season update teleconference meetin
Page 32 and 33: Catch Estimation MethodsThe procedu
Page 34 and 35: catch estimates was detected using
Page 36 and 37: of precision. The overall rating fo
Page 38 and 39: 1998-00 - No agreements with Sto:lo
Page 40 and 41: initiation of the AFS Agreements in
Page 42 and 43: Table 12 Comparison of annual socke
Page 44 and 45: Table 13 Annual estimates of the ha
Page 46 and 47: Canadian Commercial FisheriesThe pr
Page 48 and 49: logbook systems. In addition to the
Page 50 and 51: Table 15 Fraser River sockeye salmo
Page 52 and 53: Available catch estimates for the r
Page 54 and 55: Table 17 Summary of available infor
Page 56 and 57: anged from less than 100 to over 30
Page 58 and 59: Washington State Recreational Fishe
Page 60 and 61: equirements have been applied to se
Page 62 and 63: salmon were biopsied or tagged with
Page 64 and 65: Stellako-Late Stuart and 531 Adams)
Page 66 and 67: FISHERIES MANAGEMENTOverview of Pre
Page 68 and 69: parents of the recruits). Effective
Page 70 and 71: within the confidence limits. For e
Page 72 and 73: Ratio of Return to Forecast5.04.03.
Page 74 and 75: Ratio of Return to Forecast5.04.03.
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Table 20 Pre-season forecast models
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different from the straight line),
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Prediction ability of ForecastsProp
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Stock MAPEReturn Explainedby Foreca
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test fisheries are analyzed in-seas
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Inputs to the cumulative-normal mod
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eginning of the runs, but by mid-ru
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Median Absolute Percent Error (1997
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variety of hydroacoustic techniques
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enefited from improved technologies
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Post-season estimates of Escapement
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precision achieved was considerably
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m 3 /sec during the sockeye run. Fi
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Escapement TargetsOur evaluations r
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20% of the average of the 4-year se
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Table 24 Low escapement benchmarks
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Table 25 Comparison of post-season
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fisheries have been permitted to ta
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sub-dominant cycle years (e.g., 200
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SummaryLow Escapement Benchmarks (L
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Extent of OverharvestingThe estimat
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2,000,0001,800,000Early StuartCatch
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Cultus Lake Sockeye Recovery Effort
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Figure 23 Number of adult sockeye e
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Recovery ObjectivesIn anticipation
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2008 the escapement estimate was 34
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BRISTOL BAY, ALASKA SOCKEYE FISHERY
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accurate, precise, and timely, (2)
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The Bay is subjected to large tidal
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activity (Bocking and Peterman 1988
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% of total run45%40%35%30%25%20%15%
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Harvest estimation methodsTotal har
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Millions of sockeyeYearFigure 27 Hi
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management structure complements th
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1.5Togiak4.03.5NushagakMillions of
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Millions of sockeye7.06.05.04.03.02
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logical given the dynamics of the r
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1.61.4Number of fish (millions)1.21
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Pre-season forecastsAs noted above,
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8.0y = 0.79x + 1.59R² = 0.417.8Log
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12010080MAPE60402001971-1980 1981-1
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Median percent error (MPE)3020100-1
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Table 28 Average age composition of
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dampeners to reduce surface turbule
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current year’s run is accounted f
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and 1999 Revised Annexes. This inte
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Bristol Bay was in 1997 when there
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upon by managers to determine when
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STATE OF THE SCIENCECatch Monitorin
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2006) due to concerns regarding the
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RECOMMENDATIONS1. DFO needs to ensu
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LITERATURE CITEDAdkison, M.D. and R
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Beacham, T.D., M. Lapointe, J.R. Ca
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CSAS. 2007 Pre-season run size fore
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Evans, D.G., J.B. Browning and B.G.
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Hardie, D.C., D.A. Nagtegaal, K. He
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Pacific Salmon Commission. 1998. Re
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Robichaud, D., J.J. Smith, K. K. En
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Valderrama, D. and J.L. Anderson. 2
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Appendix A Statement of Work.Cohen
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All sectors3.7 The Contractor will
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“State of the Science”. Comment
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3.3 The Contractor will review and
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Appendix BList of requests to DFO b
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DFO Request 15: Recent CSAS documen
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Item Description DateRequestedReque
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Appendix CFirst Nation catch monito
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Table C-1 Summary of information re
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Table C-2 Weekly catch monitoring e
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Table D-1 Summary of information re
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community of Port Renfrew. The area
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IPrecision ( + % of the estimate)10
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Table E-2 Annual Strait of Georgia
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Table E-4 Annual Johnstone Strait e
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Table E-6 Lower Fraser River recrea
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0 would mean that the forecast does
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the general ups and downs of the ob
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Appendix G Graphical representation
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Early Stuart Timing GroupEarly Stua
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Summer-run Timing GroupSummer run7.
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Fraser River Indicator Stocks (list
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Appendix H Pre-season forecast: sum
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ManagementGroup(IndicatorStock)MAPE
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ManagementGroup(IndicatorStock)MAPE
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Appendix I Methods of In-season Sto
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Marine Gillnet Test FisheriesThe gi
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Expansion line (x1000)9080706050403
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Table I-2 Mean values for purse sei
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Figure I-5 Map of test fishing loca
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Appendix J The Hydroacoustics progr
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An SEF project was secured in 2007
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Conservation action Comments Partne
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Table K-2 Summary of actions to rec
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Table L-1 Catch and escapement of s
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Table L-3 Performance criteria of p
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Ratio of annual return to the avera
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Appendix M Reviewer comments on the
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Request #5: Sockeye allocations by
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utility of pre-season forecasts. Pr
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3. Are there additional quantitativ
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made via tagging and experimentatio
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Page 60: The authors make extensive
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ensure the reader does not assume t
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The reported excerpts from Bradford
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(budgets, legal issues, pseudo-cons
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REVIEW 3/3Reviewer Name: Dr Sean Co
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season forecasts that eventually co
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allocation shows "No agreement", an
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size.Figures showing errors for pre
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Goals can easily generate confusion
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Total rows from all these tables be
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Exploitation Rate100%90%80%70%60%50
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Exploitation RateEarly Stuart90%80%
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