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COSEWIC assessment and status report on the Bocaccio in Canada

Appendices


Appendix 1: Authorities Consulted

(Unless otherwise noted, all interviews were conducted in September-October 2001).

Amos, A. Hook-and-line fisher and Member of Hesquiaht First Nation and member of Nuh-Chah-Nulth Economic Development Council. Nuu-chah-nulth Tribal Council. PO Box 1383. Port Alberni, BC V9Y 7M2. 250-724-3131.

Beamish, R.J. Scientist with Fisheries and Oceans, Canada. Specialist in Strait of Georgia ecosystem. Pacific Biological Station, Nanaimo, B.C., Canada. V9T 6N7. 250-756-7029.

Best, R.A. Former commercial troller. 1810 Argyle St., Nanaimo, B.C. V9S 3K7. 250-729-3990.

Best, R.N. Former commercial troller. 247 Villa Rd., Nanaimo, B.C. V9T 2P6. 250-751-2332.

Brown, T.J. Biologist with Fisheries and Oceans, Canada and recreational fisher. Pacific Biological Station, Nanaimo, B.C., Canada. V9T 6N7. 250-756-7091.

Bryce, I. Commercial troller. 1985 Stewart Rd., Nanoose Bay, B.C. V9P 9E7. 250-468-5241.

Crabbe, F. Treaty Implementation Negotiator, Fisheries and Oceans, Canada and former commercial salmon troll fisher. Pacific Biological Station, Nanaimo, B.C., Canada. V9T 6N7. 250-756-7267

Dickens, B. Trawl fisher. 1678 Admiral Tryon Blvd. Qualicum Beach, B.C. V0R 2T0. 250-752-1418.

Gillespie, G. Stock assessment biologist with shellfish and groundfish sections, Fisheries and Oceans, Canada. Pacific Biological Station, Nanaimo, B.C., Canada. V9T 6N7. 250-756-7215.

Gorman, R. Trawl fisher. 6648 Hersham Ave, Burnaby. B.C. V5E 3K8. 604-525-1937.

Hein, K. Stock assessment with creel program, Fisheries and Oceans, Canada. Pacific Biological Station, Nanaimo, B.C. Canada. V9T 6N7. 250-756-7028.

MacCall, A. Groundfish Scientist. Southwest Fisheries Science Center, Department of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service. Santa Cruz Laboratory, 110 Shaffer Road, Santa Cruz, CA 95060. 831-420-3900.

McDermid, T. Commercial trawl fisher, specialist in commercial fishing in Area 4B. 250-656-5565.

North, R. Sport fisher in Howe Sound and Strait of Georgia. 604-228-9919.

Palsson, W.A. Biologist. Senior Fish and Wildlife Biologist. Puget Sound Groundfish. Washington Department of Fish and Wildlife. 16018 Mill Creek Blvd. Mill Creek, WA 98012-1296. 425-379-2313.

Saunders, M.W. Biologist. Fisheries and Oceans, Canada. Pacific Biological Station, Nanaimo. B.C. V9T 6N7. 250-756-7154.

Whitaker, D. Parasitologist. Fisheries and Oceans, Canada. Pacific Biological Station. Nanaimo. B.C. V9T 6N7. 250-756-7025.

Wilkins, M.E. Biologist. Alaska Fisheries Science Center, Department of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service. 7600 Sand Point Way N.E., Bin C15700, Building 4. Seattle, Washington 98115-0070. 206-526-4104.

 


Appendix 2: Collections Examined

No collections were examined.

 


Appendix 3: Biomass Estimation from the 3c and 3d Shrimp Survey

This section summarizes the survey and estimation procedures for bocaccio using data collected from the shrimp trawl surveys conducted off the West Coast of Vancouver Island (WCVI) since 1973 for Minor Areas 124, and 125 (Fig. 4). The systematic survey was established using grid patterns based on LORAN lines. Inner and outer boundaries were determined by fishing this grid system until shrimp catches were negligible or the bottom became too rough to trawl.

Over the history of the survey, there has been an evolution in the methodology. While sampling effort has been calibrated with respect to catchability of shrimp, there are no means to standardize catchability with respect to finfish. All tows were of 30 minutes duration, unless shortened due to gear malfunction. The distance traveled was calculated using the technology of the day. In the early years, this was start and stop LORAN locations while more recent surveys have used DGPS. This has resulted in a trend towards a shorter distance traveled for a 30-minute tow over the years. The estimation did not attempt to account for the errors or differences among surveys with respect to distance towed. There was also a modest variation in timing of the survey. Surveys were generally completed in the spring although an additional survey was conducted 1977 and 1978.

The density of bocaccio in kg/m2 was calculated for all tows. These data, with the location of the center point of each tow, was imported into a GIS. The total area of fishable shrimp grounds for each survey area was then “masked” into a grid of 300 x 300-m cells. The catch density was then assigned to the appropriate grid cell using the center point location. The biomass indices were calculated by interpolating values for the blank grid cells and then summing the values in each grid within the larger masked area. Interpolation was conducted using with an inverse distance weighting procedure and a radial search routine. The size of the radius was chosen as the lower boundary of the third category determined within the “Find Distance” routine in the spatial analyst menu. The biomass calculations were made within the GIS software package (ArcView).

 


Appendix 4: Recorded Landings and Discards (t) by Fishery and Major Area (Offshore hake refers to catches in the joint venture and foreign nation supplemental fisheries)

Appendix 4: Recorded Landings and Discards (t) by Fishery and Major Areas (4B and 3C) (Nation and Gear)
 Year4B3C
CanadaCanada TotalCanadaCanadaUSAOffshore hake Total
Trawl landedTrawl discardedTrawl landedTrawl discardedTrawl USATrawl catch
1966  0    0
1967  0    0
1968  0  0.08 0.08
1969  0  2.27 2.27
1970  0  78.69 78.69
1971  0  12.11 12.11
1972  0  9.26 9.26
1973  0  24.18 24.18
1974  00.37 8.16 8.53
1975  00.54 16.66 17.20
1976  02.59 45.58 48.17
1977  028.97 0.46 29.43
19780.06 0.063.813.061.49 8.36
19790.29 0.291.4213.582.02 17.02
19800.050.020.073.03   3.03
19810.08 0.083.56   3.56
1982  01.56   1.56
19831.52 1.529.30   9.30
1984  014.90   14.90
1985  033.601.86  35.46
19860.43 0.4381.48   81.48
1987  033.19   33.19
1988  0288.95  4.34293.29
19890.01 0.01101.23  2.38103.61
1990  081.08  2.3183.39
19910.11 0.1175.800.91 1.9278.63
19920.25 0.25148.920.90 2.46152.28
19930.720.030.75130.95  3.04133.99
19940.29 0.2997.07  6.57103.64
19950.20 0.2055.820.01 1.6057.43
19960.08 0.0839.800.07 2.9342.80
19970.01 0.0118.561.32 1.2621.14
1998  030.060.58 1.4132.05
1999  028.970.25 1.6230.84
2000  024.110.35 0.2224.68

 

Appendix 4: Continued (3D and 5A) (Nation and Gear)
 Year3D5A
CanadaCanadaUSACanadaOffshore hake TotalCanadaCanadaUSAOffshore hake Total
Trawl landedTrawl discardedTrawl landedTroll landedTrawl catchTrawl landedTrawl discardedTrawl USATrawl catch
1966     0    0
1967  51.96  51.960.22 88.91 89.13
19681.43 32.73  34.162.033.6313.37 19.03
19691.03 86.22  87.251.11 246.68 247.79
19703.04 126.39  129.430.39 54.88 55.27
1971  19.89  19.89  36.45 36.45
1972  63.00  63.00  11.21 11.21
1973  74.07  74.07  170.47 170.47
19743.01 27.01  30.021.48 203.58 205.06
1975  20.07  20.073.41 249.98 253.39
19766.24 155.74  161.988.24 178.74 186.98
197710.14 10.74  20.8817.41 30.28 47.69
197819.15 0.52  19.6774.881.1613.26 89.30
197931.78 35.27  67.0542.601.7442.16 86.50
198011.63    11.6327.03   27.03
19817.47    7.4713.94   13.94
19829.78    9.7824.382.42  26.80
198330.845.90   36.7428.76   28.76
198450.08    50.0842.52   42.52
1985128.080.10   128.1885.25   85.25
198622.90    22.90157.00   157.00
1987172.73    172.73166.454.76  171.21
1988300.58   0.60301.18233.82   233.82
1989228.980.45  2.70232.13162.260.23  162.49
1990185.79   0.40186.19256.400.54  256.94
1991241.930.45  0.48242.86304.24   304.24
1992208.91   0.02208.93258.46   258.46
1993322.57   1.28323.85250.06   250.06
1994172.880.02  4.09176.99117.721.06  118.78
1995112.750.09   112.84146.670.50  147.17
199657.880.31   58.1951.340.27  51.61
199741.830.66   42.4972.100.21  72.31
199857.750.13   57.8874.000.09  74.09
199966.590.20   66.7953.470.27  53.74
200064.541.48 0.01 66.0345.580.01 2.6348.22

 

Appendix 4: Continued (5B and 5C) (Nation and Gear)
 Year5B5C
CanadaCanadaUSAOffshore hake TotalCanadaCanada Total
Trawl landedTrawl discardedTrawl USATrawl catchTrawl landedTrawl discarded
1966    0  0
1967  19.84 19.84  0
1968  48.61 48.61  0
19693.22 474.06 477.28  0
1970  41.98 41.98  00
1971  103.63 103.63  0
1972  130.31 130.31  0
1973  475.20 475.20  0
1974  464.09 464.09  0
1975  211.51 211.51  0
197618.96 63.82 82.780.05 0.05
197724.50 192.48 216.980.23 0.23
197858.433.40  61.837.440.457.89
1979108.069.7861.74 179.5867.65 67.65
198059.8133.57  93.3818.784.7923.57
198135.859.07  44.923.310.123.43
198233.9118.42  52.331.390.481.87
198364.550.45  65.004.590.024.61
198435.87   35.8714.052.2716.32
198574.54   74.5470.874.5475.41
1986194.78   194.7825.760.2325.99
1987246.38   246.3857.77 57.77
1988388.633.63  392.2635.92 35.92
1989175.091.41  176.5043.29 43.29
1990378.50   378.5095.61 95.61
1991367.84   367.8445.75 45.75
1992196.96   196.9650.96 50.96
1993239.49   239.4949.27 49.27
1994111.200.11  111.3146.74 46.74
199592.910.17  93.0863.93 63.93
199661.471.41  62.8818.540.2218.76
199753.910.05  53.9611.58 11.58
199855.200.22  55.4210.530.0110.54
199946.100.11  46.2111.540.0211.56
2000106.010.09 3.71109.816.650.016.66

 

Appendix 4: Continued (5D and 5E) (Nation and Gear)
 Year5D5E
CanadaCanadaOffshore hake TotalCanadaCanadaOffshore hakeCanada Total
Trawl landedTrawl discardedTrawl catchTrawl landedTrawl discardedTrawl catchTroll landed
19664.51  4.51    0
1967   0    0
1968   0    0
1969   0    0
19700.63  0.63    0
1971   0    0
19729.02  9.02    0
19732.37  2.37    0
1974   0    0
19751.580.45 2.03    0
197614.84  14.84    0
197752.886.58 59.461.37   1.37
197846.191.63 47.8214.310.08  14.39
197946.909.75 56.653.630.12  3.75
198018.280.02 18.300.450.01  0.46
19813.9211.79 15.710.270.32  0.59
19827.690.10 7.790.52   0.52
19831.751.36 3.110.09   0.09
19849.56  9.56    0
19857.44  7.440.33   0.33
198610.84  10.847.25   7.25
198722.95  22.955.39   5.39
198818.29  18.2948.15   48.15
198922.57  22.5744.03   44.03
199019.0011.34 30.341.48   1.48
199113.971.91 15.888.17   8.17
199272.530.45 72.9811.81   11.81
199389.71  89.7142.34   42.34
199441.19  41.198.77   8.77
199527.97  27.977.71   7.71
199617.330.16 17.498.490.03  8.52
199717.300.18 17.485.480.05  5.53
199815.620.05 15.675.610.13  5.74
19996.680.01 6.693.280.45  3.73
20006.700.020.186.905.430.020.490.376.31

 

Appendix 4: Continued (Unknown and Grand Total) (Nation and Gear)
 YearUnknown Grand Total
CanadaCanada Total
Trawl landedH & L landed
1966  04.51
1967  0160.93
1968  0101.88
1969  0814.59
1970  0306.00
1971  0172.08
1972  0222.80
1973  0746.29
1974  0707.70
1975  0504.20
1976  0494.80
1977  0376.04
1978  0249.32
1979  0478.49
1980  0177.47
1981  089.70
1982  0100.65
1983  0149.13
1984  0169.25
1985  0406.61
1986  0500.67
1987  0709.62
1988  01322.91
1989  0784.63
1990  01032.45
1991  01063.48
1992  0952.63
1993  01129.46
1994  0607.71
1995 29.2429.24539.57
199613.4523.1936.64296.97
19973.6111.2014.81239.31
19984.1710.3014.47265.86
19994.2113.3417.55237.11
20006.5419.4525.99294.60

 


Appendix 5: Data Sources Used for the Preparation of the Bocaccio Status Report

Catch and Landings Data

  1. GFCatch. Canadian trawl landings, 1954-1995 (Rutherford 1999).

  2. PacHarvTrawl. Canadian trawl landings, 1996-2000. SQL Server database, Groundfish Section, Stock Assessment Division, Science Branch, Fisheries and Oceans, Canada. Pacific Biological Station.

  3. PacHarvHL. Canadian hook and line landings, 1995-2001. SQL Server database, Groundfish Section, Stock Assessment Division, Science Branch, Fisheries and Oceans, Canada. Pacific Biological Station.

  4. Pacharv3. Canadian troll landings from sales slips, 1982-2001. Oracle database, Regional Data Unit, Information Management, Corporate Services Branch, Fisheries and Oceans, Canada.

  5. U.S.trawl landings from Canada and Washington, 1967-1979, from Tagart and Kimura (1982).

  6. U.S.trawl landings from Canada and Washington, 1980, unpublished data from Washington State Department of Fish and Wildlife (Jack Tagart, pers. comm. Appendix 1)

  7. PACFIN. U.S.commercial landings from Washington, Oregon and California, 1981-2000 (www.psmfc.org/pacfin/data.html).

  8. AKFIN. U.S. commercial landings from Alaska, 1991-1998 (www.psmfc.org/akfin/Reports/reports.html).

  9. Washington Department of Fish and Wildlife. Commercial trawl landings for 1980.

Biological Data

  1. GFBio. Biological samples and research cruise database, Groundfish Section, Stock Assessment Division, Science Branch, Fisheries and Oceans, Canada. Pacific Biological Station.

 

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