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

More documents

Recommendations

Info

Fraser River Indicator Stocks (listed in alphabetical order)Early StuartEarly Stuart6.506.005.50y = 0.9894x - 0.0994R 2 = 0.7623P< 0.0001(log) Return5.004.504.003.503.004.00 4.50 5.00 5.50 6.00 6.50(log) ForecastEarly Stuart (Early Stuart)Above 100% = Returns > Forecast200%Below 100% = Returns < Forecast(Return/Forecast)*100150%100%50%0%198019811982198319841985198619871988198919901991199219931994199519961997199819992000200120022003200420052006200720082009YearG-11
Fraser River Indicator Stocks (listed in alphabetical order)FennellFennell (Early Summer run)5.004.804.604.40y = 0.3184x + 2.8974R 2 = 0.1586P= 0.0324(log) Return4.204.003.803.603.403.203.002.50 3.00 3.50 4.00 4.50 5.00 5.50(log) ForecastFennell CU (Early summer)700%(Return/Forecast)*100600%500%400%300%200%100%0%Above 100% = Returns > ForecastBelow 100% = Returns < Forecast19801981198219831984198519861987198819891990199219931994199519961997199819992000200120022003200420052006200720082009YearG-12
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 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.
Page 74 and 75:
Ratio of Return to Forecast5.04.03.
Page 76 and 77:
Table 20 Pre-season forecast models
Page 78 and 79:
different from the straight line),
Page 80 and 81:
Prediction ability of ForecastsProp
Page 82 and 83:
Stock MAPEReturn Explainedby Foreca
Page 84 and 85:
test fisheries are analyzed in-seas
Page 86 and 87:
Inputs to the cumulative-normal mod
Page 88 and 89:
eginning of the runs, but by mid-ru
Page 90 and 91:
Median Absolute Percent Error (1997
Page 92 and 93:
variety of hydroacoustic techniques
Page 94 and 95:
enefited from improved technologies
Page 96 and 97:
Post-season estimates of Escapement
Page 98 and 99:
precision achieved was considerably
Page 100 and 101:
m 3 /sec during the sockeye run. Fi
Page 102 and 103:
Escapement TargetsOur evaluations r
Page 104 and 105:
20% of the average of the 4-year se
Page 106 and 107:
Table 24 Low escapement benchmarks
Page 108 and 109:
Table 25 Comparison of post-season
Page 110 and 111:
fisheries have been permitted to ta
Page 112 and 113:
sub-dominant cycle years (e.g., 200
Page 114 and 115:
SummaryLow Escapement Benchmarks (L
Page 116 and 117:
Extent of OverharvestingThe estimat
Page 118 and 119:
2,000,0001,800,000Early StuartCatch
Page 120 and 121:
Cultus Lake Sockeye Recovery Effort
Page 122 and 123:
Figure 23 Number of adult sockeye e
Page 124 and 125:
Recovery ObjectivesIn anticipation
Page 126 and 127:
2008 the escapement estimate was 34
Page 128 and 129:
BRISTOL BAY, ALASKA SOCKEYE FISHERY
Page 130 and 131:
accurate, precise, and timely, (2)
Page 132 and 133:
The Bay is subjected to large tidal
Page 134 and 135:
activity (Bocking and Peterman 1988
Page 136 and 137:
% of total run45%40%35%30%25%20%15%
Page 138 and 139:
Harvest estimation methodsTotal har
Page 140 and 141:
Millions of sockeyeYearFigure 27 Hi
Page 142 and 143:
management structure complements th
Page 144 and 145:
1.5Togiak4.03.5NushagakMillions of
Page 146 and 147:
Millions of sockeye7.06.05.04.03.02
Page 148 and 149:
logical given the dynamics of the r
Page 150 and 151:
1.61.4Number of fish (millions)1.21
Page 152 and 153:
Pre-season forecastsAs noted above,
Page 154 and 155:
8.0y = 0.79x + 1.59R² = 0.417.8Log
Page 156 and 157:
12010080MAPE60402001971-1980 1981-1
Page 158 and 159:
Median percent error (MPE)3020100-1
Page 160 and 161:
Table 28 Average age composition of
Page 162 and 163:
dampeners to reduce surface turbule
Page 164 and 165:
current year’s run is accounted f
Page 166 and 167:
and 1999 Revised Annexes. This inte
Page 168 and 169:
Bristol Bay was in 1997 when there
Page 170 and 171:
upon by managers to determine when
Page 172 and 173:
STATE OF THE SCIENCECatch Monitorin
Page 174 and 175:
2006) due to concerns regarding the
Page 176 and 177:
RECOMMENDATIONS1. DFO needs to ensu
Page 178 and 179:
LITERATURE CITEDAdkison, M.D. and R
Page 180 and 181:
Beacham, T.D., M. Lapointe, J.R. Ca
Page 182 and 183:
CSAS. 2007 Pre-season run size fore
Page 184 and 185:
Evans, D.G., J.B. Browning and B.G.
Page 186 and 187:
Hardie, D.C., D.A. Nagtegaal, K. He
Page 188 and 189:
Pacific Salmon Commission. 1998. Re
Page 190 and 191: Robichaud, D., J.J. Smith, K. K. En
Page 192 and 193: Valderrama, D. and J.L. Anderson. 2
Page 194 and 195: Appendix A Statement of Work.Cohen
Page 196 and 197: All sectors3.7 The Contractor will
Page 198 and 199: “State of the Science”. Comment
Page 200 and 201: 3.3 The Contractor will review and
Page 202 and 203: Appendix BList of requests to DFO b
Page 204 and 205: DFO Request 15: Recent CSAS documen
Page 206 and 207: Item Description DateRequestedReque
Page 208 and 209: Appendix CFirst Nation catch monito
Page 210 and 211: Table C-1 Summary of information re
Page 212 and 213: Table C-2 Weekly catch monitoring e
Page 214 and 215: Table D-1 Summary of information re
Page 216 and 217: community of Port Renfrew. The area
Page 218 and 219: IPrecision ( + % of the estimate)10
Page 220 and 221: Table E-2 Annual Strait of Georgia
Page 222 and 223: Table E-4 Annual Johnstone Strait e
Page 224 and 225: Table E-6 Lower Fraser River recrea
Page 226 and 227: 0 would mean that the forecast does
Page 228 and 229: the general ups and downs of the ob
Page 230 and 231: Appendix G Graphical representation
Page 232 and 233: Early Stuart Timing GroupEarly Stua
Page 234 and 235: Summer-run Timing GroupSummer run7.
Page 236 and 237: Fraser River Indicator Stocks (list
Page 254 and 255: Appendix H Pre-season forecast: sum
Page 256 and 257: ManagementGroup(IndicatorStock)MAPE
Page 258 and 259: ManagementGroup(IndicatorStock)MAPE
Page 260 and 261: Appendix I Methods of In-season Sto
Page 262 and 263: Marine Gillnet Test FisheriesThe gi
Page 264 and 265: Expansion line (x1000)9080706050403
Page 266 and 267: Table I-2 Mean values for purse sei
Page 268 and 269: Figure I-5 Map of test fishing loca
Page 270 and 271: Appendix J The Hydroacoustics progr
Page 272 and 273: An SEF project was secured in 2007
Page 274 and 275: Conservation action Comments Partne
Page 276 and 277: Table K-2 Summary of actions to rec
Page 278 and 279: Table L-1 Catch and escapement of s
Page 280 and 281: Table L-3 Performance criteria of p
Page 282 and 283: Ratio of annual return to the avera
Page 284 and 285: Appendix M Reviewer comments on the
Page 286 and 287: Request #5: Sockeye allocations by
Page 288 and 289: utility of pre-season forecasts. Pr
Page 290 and 291:
3. Are there additional quantitativ
Page 292 and 293:
made via tagging and experimentatio
Page 294 and 295:
Page 60: The authors make extensive
Page 296 and 297:
ensure the reader does not assume t
Page 298 and 299:
The reported excerpts from Bradford
Page 300 and 301:
(budgets, legal issues, pseudo-cons
Page 302 and 303:
REVIEW 3/3Reviewer Name: Dr Sean Co
Page 304 and 305:
season forecasts that eventually co
Page 306 and 307:
allocation shows "No agreement", an
Page 308 and 309:
size.Figures showing errors for pre
Page 310 and 311:
Goals can easily generate confusion
Page 312 and 313:
Total rows from all these tables be
Page 314 and 315:
Exploitation Rate100%90%80%70%60%50
Page 316 and 317:
Exploitation RateEarly Stuart90%80%
show all

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

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?