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

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Table 2 Summary of available information on accuracy, precision and reliability ofthe catch monitoring programs used to produce estimates of the harvest ofFraser sockeye (2001-2009).% of Quality of Catch EstimatesLocation Catch Accuracy Precision ReliabilityCanadian First NationsFood, Social, Ceremonial 29% Good Unknown MediumEconomic Opportunity 6% Good High GoodCanadian Commercial 42% Fair Unknown MediumCanadian Recreational 3% Fair NA MediumCanadian Selective 1% Very Good High HighUS (Alaska + Wash.) 15% Very Good High HighTest Fisheries 4% Very Good High HighTotal 100% Good Unknown MediumOverview of First Nation FisheriesOur evaluations related to commercial fisheries management address the following twotasks as defined in the Statement of Work (Appendix A):3.1 The Contractor will summarize the food, social, ceremonial andcommercial harvest levels of Fraser River sockeye allocated to First Nations(through treaty, fisheries agreement, communal fishing licence or other program oragreement), and the actual harvest levels achieved, according to fishing locationand method, for the period 1980 - 2009. The formal and informal structure of theFirst Nations fishery will be characterized.3.2 The Contractor will describe and evaluate the accuracy, precision andreliability of methods for making catch estimates.The management of First Nation fisheries that target Fraser sockeye is a challengingprocess involving more than 72 First Nations (Figure 3). In 2009, AFS Agreements weresigned with 39 groups representing most of these First Nations. In addition to these AFSAgreements, communal licences that define fishing times, locations, methods and targetspecies are issued to each First Nation or First Nation group. On 3 April 2009, theTsawwassen First Nation became the first group with a modern day Treaty to include a21
defined allocation for Fraser sockeye. Through these agreements, licences, and annualconsultations with First Nations, DFO has identified sockeye “allocations” for FSCfisheries which totaled 1,029,650 in 2009. Within any given year, the number of sockeyeavailable for harvest by Canadian First Nations depends on the abundance of Frasersockeye and conservation concerns regarding other species.Figure 3 Geographic location and boundaries of the major Firsts Nation fisherieswithin the Fraser River watershed (from English et al. 2007).22
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 26 and 27: Table 3 provides the annual estimat
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.
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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
Page 194 and 195:
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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