Scottish scallop stocks: results of 2023 stock assessments

This report presents the results of Scottish regional king scallop stock assessments carried out by the Marine Directorate including data up to 2022. It also provides background information on Scottish fisheries for scallops, and the current management and regulatory framework.


7. Appendices

Appendix 1: Supplementary tables

Table A.1. Scottish scallop assessment areas.
Name ICES Statistical Rectangles
Clyde 39-40 E5; 40 E4 (eastern half)
East Coast 39-43 E8-F0; 40-41 E6; 40-43 E7; 44 E9-F0
North East 44 E5-E8; 45 E6-E9; 46 E7-E9; 47 E8-E9
North West 41-46 E1-E3; 42-46 E4
Orkney 47 E4; 46-47 E5-E6; 47 E7
Shetland 48-51 E7-E9
West of Kintyre 39-40 E2-E3; 39 E4; 40 E4 (western half); 41 E4
Table A.2. Scottish (UK vessels into Scotland) dredge landings (tonnes).
Year Clyde East Coast Irish Sea North East North West Orkney Shetland West of Kintyre Other Total^
1982 102 5 340 672 3173 42 422 1510 NA 6266
1983 68 0 266 645 2035 29 357 1234 NA 4634
1984 132 0 594 403 2220 22 402 1677 NA 5450
1985 180 0 538 388 1524 4 212 913 NA 3759
1986 76 0 270 559 1437 109 362 688 NA 3501
1987 92 1 415 679 1670 120 311 883 NA 4171
1988 79 0 594 671 1608 35 359 469 NA 3815
1989 31 1 450 894 1581 293 537 577 NA 4364
1990 18 2 451 952 1357 176 447 620 NA 4023
1991 48 540 374 385 1104 124 405 617 NA 3597
1992 23 321 234 1733 1070 26 534 781 NA 4722
1993 75 626 314 1571 976 0 530 1014 NA 5106
1994 182 1813 242 2322 1845 110 603 1073 NA 8190
1995 139 1902 410 3150 1366 214 743 890 NA 8814
1996 110 679 605 3490 2037 214 674 1154 NA 8963
1997 231 715 397 2943 2300 146 932 1360 NA 9024
1998 243 1006 682 1739 2698 163 920 1528 NA 8979
1999 201 1819 1039 1682 1087 291 748 1188 NA 8055
2000 352 726 458 1512 3337 99 338 1630 NA 8452
2001 304 299 732 1736 4132 442 492 1069 NA 9206
2002 188 416 637 738 4264 268 563 1592 9 8674
2003 185 820 635 1822 3450 175 773 1692 20 9574
2004 178 2425 753 1982 3173 153 894 1409 231 11198
2005 197 1586 839 2028 2519 220 720 1238 40 9389
2006 164 1782 732 1815 1654 116 774 1143 8 8189
2007 134 2596 837 1338 1303 108 863 1149 138 8466
2008 147 1843 898 1390 1589 184 880 1699 430 9059
2009 157 1578 1488 2151 1318 186 916 1404 202 9399
2010 140 1782 1542 1273 1129 172 1076 1693 43 8849
2011 152 832 1254 809 1205 419 911 1648 50 7279
2012 203 1460 1035 1285 1548 421 1144 2692 66 9855
2013 189 2238 1041 2767 1808 614 1413 1750 79 11899
2014 141 1465 1100 1874 1964 277 1005 1953 56 9835
2015 107 2220 855 1824 1936 379 1138 1353 36 9848
2016 108 2813 1345 2091 2230 362 1126 1343 38 11456
2017 58 2049 879 1083 1732 331 1149 859 93 8234
2018 114 1100 901 816 1554 300 1296 614 73 6769
2019 118 1084 573 496 1516 158 1090 690 50 5776
2020 70 723 621 1063 1282 134 1095 386 145 5519
2021 59 1077 334 1664 1321 162 1290 494 43 6445
2022 86 463 712 874 1071 197 1456 676 25 5558

^ Total is not necessarily equal to the sum of the individual areas due to rounding of values to whole tonnes.

Table A.3. Diver caught landings (tonnes) by UK vessels into Scotland.
Year Clyde East Coast North East North West Orkney Shetland West of Kintyre Other Total^
1982 0 0 12 163 7 1 83 NA 266
1983 5 0 4 303 38 0 106 NA 456
1984 3 0 0 388 98 0 59 NA 548
1985 11 0 0 310 71 0 63 NA 455
1986 0 0 17 299 35 6 94 NA 451
1987 0 0 1 426 46 0 105 NA 578
1988 0 0 5 244 49 1 88 NA 387
1989 1 0 0 170 74 0 59 NA 304
1990 0 0 3 83 57 0 41 NA 184
1991 0 0 0 175 70 21 47 NA 313
1992 0 0 0 199 87 1 47 NA 334
1993 0 0 0 171 36 47 48 NA 302
1994 1 0 0 157 92 27 120 NA 397
1995 0 0 2 453 222 22 38 NA 737
1996 0 0 3 287 150 0 109 NA 549
1997 0 1 1 481 139 0 128 NA 750
1998 0 0 0 394 176 6 135 NA 711
1999 0 0 0 150 162 7 62 NA 381
2000 5 0 4 142 162 0 18 NA 331
2001 15 0 9 244 126 0 113 NA 507
2002 20 0 3 272 117 14 65 0 491
2003 13 0 0 327 129 4 84 0 557
2004 28 0 3 133 108 0 54 0 326
2005 30 0 3 134 172 0 60 0 399
2006 1 0 6 233 93 0 62 0 395
2007 5 0 0 233 63 0 48 0 349
2008 24 0 1 182 80 0 57 0 344
2009 17 0 3 205 88 0 66 0 379
2010 9 0 1 229 111 0 73 0 423
2011 3 0 0 184 127 0 70 4 388
2012 7 0 0 211 111 0 82 0 411
2013 54 0 0 208 106 0 68 0 436
2014 47 0 3 266 136 0 113 0 565
2015 45 0 0 275 180 0 109 0 609
2016 62 0 0 212 217 0 132 0 623
2017 49 0 3 250 185 0 152 0 639
2018 40 0 3 205 258 0 136 0 642
2019 27 1 10 213 242 0 115 0 608
2020 37 0 0 105 160 0 53 0 355
2021 23 0 0 116 311 0 49 0 499
2022 47 0 18 124 309 0 40 0 538

^ Total is not necessarily equal to the sum of the individual areas due to rounding of values to whole tonnes.

Table A.4. Total landings (tonnes) from Scottish assessment areas, as used in the assessments.
Year Clyde East Coast North East North West Orkney Shetland West of Kintyre
1982 102 5 684 3336 49 423 1719
1983 73 0 649 2338 67 357 1446
1984 134 0 403 2608 121 402 1873
1985 191 2 388 1834 76 212 1053
1986 78 0 576 1735 143 368 844
1987 92 1 681 2096 169 311 1066
1988 79 0 676 1852 84 360 601
1989 32 2 895 1752 367 537 686
1990 18 4 956 1447 237 449 714
1991 48 560 385 1288 194 426 716
1992 23 340 1734 1270 113 535 893
1993 77 643 1572 1148 36 577 1146
1994 184 1866 2327 2010 202 634 1293
1995 139 1953 3155 1820 436 765 1002
1996 111 696 3501 2324 365 675 1364
1997 231 737 2948 2781 285 932 1606
1998 243 1032 1740 3096 340 926 1795
1999 201 1866 1683 1255 455 755 1350
2000 357 745 1516 3481 260 338 1721
2001 319 313 1800 4376 572 496 1249
2002 210 478 748 4536 385 577 1797
2003 197 832 1823 3779 306 780 1846
2004 213 2430 1986 3308 263 895 1577
2005 226 1596 2032 2658 393 720 1403
2006 165 1828 1835 1886 226 774 1274
2007 139 2740 1338 1539 203 863 1282
2008 171 1930 1399 1779 285 880 1854
2009 174 1642 2154 1555 298 916 1700
2010 148 1791 1274 1370 317 1077 1863
2011 154 866 810 1394 586 911 1755
2012 214 1511 1306 1788 590 1151 3054
2013 244 2269 2776 2056 798 1418 2119
2014 190 1510 1897 2263 472 1024 2821
2015 174 2287 1827 2236 639 1167 1829
2016 173 2929 2104 2454 654 1176 1874
2017 133 2429 1145 2050 554 1158 1192
2018 154 1196 828 1779 618 1303 860
2019 147 1213 507 1740 471 1101 942
2020 109 828 1068 1407 321 1160 611
2021 83 1105 1664 1473 536 1299 690
2022 133 463 891 1216 569 1459 755
Table A.5. Market sampling levels (number of trips) by assessment area.
Year Clyde East Coast North East North West Orkney Shetland West of Kintyre
1982 NA NA NA 19 NA NA 30
1983 NA NA NA 28 NA NA 27
1984 NA NA 1 36 NA NA 31
1985 1 NA 1 29 0 35 52
1986 0 NA 17 34 0 59 55
1987 0 NA 2 43 0 45 31
1988 0 NA 2 12 0 29 26
1989 1 NA 7 23 2 52 21
1990 0 NA 12 35 1 53 52
1991 2 12 23 54 4 60 102
1992 1 6 36 67 0 58 67
1993 5 14 34 65 3 73 64
1994 3 36 43 52 4 79 79
1995 3 70 26 57 7 57 43
1996 4 27 37 81 8 77 47
1997 12 18 30 60 3 61 30
1998 4 11 20 66 6 54 42
1999 3 18 29 10 7 79 26
2000 3 8 36 53 4 40 42
2001^ 6 0 26 83 8 69 40
2002 6 2 10 58 4 67 30
2003 7 3 15 47 2 83 45
2004 12 11 11 19 3 77 21
2005 7 5 7 15 0 75 34
2006 2 5 9 13 0 101 8
2007 3 18 4 9 3 110 23
2008 7 17 21 13 6 94 24
2009 3 12 6 15 7 59 27
2010 11 6 6 31 7 65 10
2011 5 5 4 14 5 65 10
2012 15 11 10 25 6 62 19
2013 13 14 10 32 2 70 24
2014 10 6 5 21 2 63 42
2015 14 12 5 42 4 71 31
2016 4 10 12 22 3 72 35
2017 0 8 5 37 5 71 40
2018 3 3 4 29 13 62 25
2019 9 6 5 31 8 65 25
2020 8 3 6 29 9 62 12
2021 5 1 5 17 4 53 16
2022 4 3 4 9 7 67 5

^ No sampling of East Coast took place in 2001 due to low level of landings in that year (and lack of opportunity for sampling).

Table A.6. East Coast. Catch numbers-at-age (in thousands). No sampling took place in 2001.
Year 3 4 5 6 7 8 9 10+
1991 191 198 234 165 262 208 188 862
1992 13 282 232 250 220 157 109 496
1993 337 1711 826 255 172 90 75 189
1994 361 3528 4365 1343 376 205 146 553
1995 246 1788 3144 3280 1137 541 218 589
1996 52 357 755 1181 844 197 46 155
1997 69 520 732 1022 938 353 66 94
1998 20 103 486 809 1295 939 352 270
1999 204 367 518 781 1225 1546 1641 2547
2000 15 343 108 101 290 597 667 1177
2001 NA NA NA NA NA NA NA NA
2002 559 547 84 32 65 176 202 238
2003 304 2475 918 123 201 178 195 359
2004 18 1344 4175 2986 1077 662 543 2013
2005 298 786 2169 2793 844 253 193 805
2006 190 537 1474 2577 2392 1513 509 777
2007 916 6912 3116 1724 1066 540 236 686
2008 812 2590 3060 1246 889 583 299 519
2009 284 1293 2016 1449 1174 852 451 832
2010 7 436 1770 4335 1538 886 449 355
2011 0 87 393 1020 1183 1086 428 316
2012 217 498 971 1186 1587 1373 642 809
2013 62 775 2113 2148 1888 1803 996 1097
2014 72 1139 2119 1742 1080 984 775 473
2015 80 1171 3205 2531 1762 1577 1166 1257
2016 78 522 3265 3671 1864 1507 403 3318
2017 17 596 4382 4657 2874 1447 388 734
2018 0 37 1019 1538 1830 1182 551 797
2019 0 99 613 1032 1070 1105 759 999
2020 0 213 1456 1942 590 235 101 156
2021 154 2890 2132 1536 62 0 0 0
2022 0 213 507 364 305 249 209 363
Table A.7. East Coast. Mean weights-at-age (total live weight, in kg) in total catch (also used for stock weights).
Year 3 4 5 6 7 8 9 10+
1991 0.164 0.170 0.193 0.213 0.227 0.243 0.249 0.282
1992 0.134 0.134 0.168 0.187 0.201 0.206 0.227 0.228
1993 0.131 0.147 0.180 0.212 0.246 0.257 0.266 0.302
1994 0.128 0.149 0.161 0.197 0.233 0.239 0.254 0.279
1995 0.137 0.155 0.164 0.177 0.200 0.221 0.232 0.253
1996 0.129 0.150 0.172 0.190 0.211 0.243 0.278 0.280
1997 0.131 0.160 0.173 0.189 0.211 0.234 0.253 0.303
1998 0.150 0.167 0.198 0.221 0.239 0.263 0.283 0.299
1999 0.160 0.176 0.178 0.190 0.198 0.211 0.223 0.233
2000 0.136 0.170 0.177 0.201 0.195 0.216 0.228 0.261
2001 0.146 0.135 0.163 0.173 0.191 0.208 0.218 0.239
2002 0.140 0.163 0.232 0.227 0.249 0.271 0.277 0.305
2003 0.130 0.153 0.171 0.203 0.222 0.236 0.250 0.265
2004 0.114 0.139 0.161 0.179 0.202 0.239 0.250 0.268
2005 0.107 0.134 0.167 0.197 0.217 0.236 0.254 0.300
2006 0.127 0.141 0.147 0.170 0.185 0.202 0.220 0.245
2007 0.134 0.146 0.178 0.217 0.246 0.267 0.266 0.314
2008 0.154 0.165 0.179 0.207 0.226 0.236 0.263 0.300
2009 0.141 0.151 0.163 0.187 0.213 0.227 0.257 0.294
2010 0.127 0.145 0.164 0.179 0.188 0.206 0.214 0.259
2011 NA 0.142 0.159 0.173 0.185 0.196 0.225 0.272
2012 0.137 0.161 0.179 0.193 0.211 0.219 0.233 0.252
2013 0.133 0.151 0.169 0.191 0.214 0.235 0.249 0.274
2014 0.123 0.134 0.141 0.163 0.194 0.230 0.256 0.279
2015 0.131 0.140 0.141 0.159 0.192 0.214 0.223 0.258
2016 0.117 0.144 0.159 0.177 0.204 0.216 0.237 0.263
2017 0.140 0.141 0.138 0.154 0.173 0.186 0.214 0.238
2018 NA 0.130 0.144 0.160 0.169 0.182 0.188 0.215
2019 NA 0.150 0.167 0.191 0.205 0.221 0.230 0.262
2020 NA 0.149 0.156 0.171 0.204 0.227 0.235 0.252
2021 0.152 0.153 0.166 0.178 0.213 NA NA NA
2022 NA 0.158 0.179 0.197 0.209 0.235 0.244 0.258
Table A.8. Summary of Marine Directorate North Sea scallop dredge surveys.
Vessel Cruise start date Cruise end date No. of dredges Dredge width (m) NE hauls EC hauls No. of scallops
R.V. Clupea 11-Nov-97 01-Dec-97 3 4.5 58 0 3750
R.V. Clupea 21-Jan-99 09-Feb-99 3 4.5 71 38 5035
R.V. Clupea 23-Sep-99 30-Sep-99 3 4.5 77 39 4908
R.V. Clupea 25-Sep-00 13-Oct-00 3 4.5 65 36 4043
R.V. Clupea 15-Jun-01 02-Jul-01 3 4.5 75 45 4674
R.V. Clupea 15-Jul-02 02-Aug-02 3 4.5 96 45 6980
R.V. Clupea 02-Jul-03 21-Jul-03 3 4.5 87 46 7965
R.V. Clupea 23-Jun-04 12-Jul-04 3 4.5 71 40 5214
R.V. Clupea 17-Jun-05 11-Jul-05 3 4.5 88 44 6681
R.V. Clupea 23-May-06 12-Jun-06 3 4.5 84 44 8736
R.V. Clupea 18-Jun-07 08-Jul-07 3 4.5 77 46 6548
R.V. Alba na Mara 27-Jun-08 16-Jul-08 6 9 62 32 13110
R.V. Alba na Mara 01-Jul-09 20-Jul-09 6 9 56 43 11932
R.V. Alba na Mara 25-Jun-10 14-Jul-10 6 9 69 45 13913
R.V. Alba na Mara 22-Jun-11 11-Jul-11 6 9 69 44 13716
R.V. Alba na Mara 26-May-12 12-Jun-12 6 9 73 45 18424
R.V. Alba na Mara 04-Jul-13 21-Jul-13 6 9 74 43 16038
R.V. Alba na Mara 06-Jun-14 24-Jun-14 6 9 72 35 15875
R.V. Alba na Mara 20-May-15 08-Jun-15 6 9 48 42 16111
R.V. Alba na Mara 19-May-16 07-Jun-16 6 9 70 45 13142
R.V. Alba na Mara 08-Jun-17 26-Jun-17 6 9 74 45 10574
R.V. Alba na Mara 04-Jul-18 17-Aug-18 6 9 71 36 10905
R.V. Alba na Mara 16-Jun-19 02-Jul-19 6 9 72 43 10997
R.V. Alba na Mara 30-Apr-21 27-May-21 6 9 62 34 9553
R.V. Alba na Mara 16-Jul-22 31-Jul-22 6 9 66 24 7456

Clupea

Table A.9. East Coast. Research-vessel survey data. Catch rates (numbers hour-1metre-1) by age class and year.
Year 3 4 5 6 7 8 9 10+
1998 0.377 0.266 0.488 0.433 2.640 2.329 4.259 4.315
1999 0.623 0.383 0.317 0.328 2.461 2.177 2.483 2.078
2000 0.963 0.786 0.215 0.444 0.837 2.548 3.042 3.625
2001 3.158 1.210 0.653 0.346 0.672 1.709 2.409 2.937
2002 3.854 6.160 1.163 0.788 0.497 1.275 2.053 2.504
2003 1.265 5.225 4.367 1.579 0.794 0.960 0.794 3.582
2004 1.424 2.741 4.979 3.801 0.782 0.589 0.996 3.126
2005 2.532 2.201 3.136 4.548 3.321 0.838 0.584 3.506
2006 5.876 3.836 3.192 3.133 3.348 2.489 1.884 2.723
2007 0.683 3.798 4.836 2.887 2.659 2.095 2.013 3.379

Alba

Year 3 4 5 6 7 8 9 10+
2008 1.072 4.516 8.401 3.497 2.229 1.597 0.618 3.675
2009 0.613 2.381 4.067 5.350 3.222 1.990 0.866 4.701
2010 0.773 2.026 2.913 3.887 4.019 2.250 0.823 4.024
2011 0.505 1.416 2.993 3.338 4.284 2.892 1.466 3.753
2012 0.540 3.025 2.517 2.896 4.387 3.963 2.231 9.052
2013 0.607 1.623 1.994 1.792 2.346 2.640 1.691 7.481
2014 0.627 3.038 3.038 2.340 3.098 2.674 1.301 7.359
2015 0.591 5.589 5.53 3.266 2.661 2.080 1.668 11.055
2016 0.071 1.252 3.15 3.293 2.397 1.405 1.186 7.639
2017 0.719 1.042 1.105 2.479 2.233 1.341 0.738 5.760
2018 0.462 2.505 1.537 2.024 2.929 1.828 1.031 4.447
2019 1.087 2.646 1.841 1.851 2.185 1.805 1.262 4.441
2020 NA NA NA NA NA NA NA NA
2021 0.698 1.298 2.205 2.277 1.566 1.494 1.168 2.857
2022 0.248 0.972 1.641 2.082 2.164 1.550 1.082 3.182

Table A.10. East Coast. SAM assessment configuration file.

# Configuration saved:

#

# Where a matrix is specified rows corresponds to fleets and columns to ages.

# Same number indicates same parameter used

# Numbers (integers) starts from zero and must be consecutive

#

$minAge

# The minimium age class in the assessment

3

$maxAge

# The maximum age class in the assessment

10

$maxAgePlusGroup

# Is last age group considered a plus group (1 yes, or 0 no).

1 0 0

$keyLogFsta

# Coupling of the fishing mortality states (nomally only first row is used).

0 1 2 3 4 5 5 5

-1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1

$corFlag

# Correlation of fishing mortality across ages (0 independent, 1 compound symmetry, or 2 AR(1)

2

$keyLogFpar

# Coupling of the survey catchability parameters (nomally first row is not used, as that is covered by fishing mortality).

-1 -1 -1 -1 -1 -1 -1 -1

0 1 2 3 4 5 6 -1

7 8 9 10 11 11 11 -1

$keyQpow

# Density dependent catchability power parameters (if any).

-1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1

$keyVarF

# Coupling of process variance parameters for log(F)-process (nomally only first row is used)

0 0 0 0 0 0 0 0

-1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1

$keyVarLogN

# Coupling of process variance parameters for log(N)-process

0 1 1 1 1 1 1 1

$keyVarObs

# Coupling of the variance parameters for the observations.

0 1 2 2 2 2 2 3

4 5 6 6 6 6 6 -1

7 8 9 9 9 9 9 -1

$obsCorStruct

# Covariance structure for each fleet ("ID" independent, "AR" AR(1), or "US" for unstructured). | Possible values are: "ID" "AR" "US"

"ID" "ID" "AR"

$keyCorObs

# Coupling of correlation parameters can only be specified if the AR(1) structure is chosen above.

# NA's indicate where correlation parameters can be specified (-1 where they cannot).

#

NA NA NA NA NA NA NA

NA NA NA NA NA NA -1

0 0 1 1 1 1 -1

$stockRecruitmentModelCode

# Stock recruitment code (0 for plain random walk, 1 for Ricker, and 2 for Beverton-Holt).

0

$noScaledYears

# Number of years where catch scaling is applied.

0

$keyScaledYears

# A vector of the years where catch scaling is applied.

$keyParScaledYA

# A matrix specifying the couplings of scale parameters (nrow = no scaled years, ncols = no ages).

$fbarRange

# lowest and higest age included in Fbar

4 8

$keyBiomassTreat

# To be defined only if a biomass survey is used (0 SSB index, 1 catch index, and 2 FSB index).

-1 -1 -1

$obsLikelihoodFlag

# Option for observational likelihood | Possible values are: "LN" "ALN"

"LN" "LN" "LN"

$fixVarToWeight

# If weight attribute is supplied for observations this option sets the treatment (0 relative weight, 1 fix variance to weight).

0

Table A.11. East Coast. SAM assessment stock summary. Recruitment (R) is in thousands and SSB in tonnes. ‘Low’ and ‘High’ refer to lower and upper 95% confidence intervals.
Year R (age 3) Low High SSB Low High Fbar (4-8) Low High
1991 11479 7042 18710 4576 3509 5967 0.189 0.135 0.264
1992 20179 13106 31071 5612 4289 7341 0.167 0.116 0.241
1993 20847 13728 31659 8288 6515 10543 0.146 0.108 0.196
1994 14341 9470 21716 9292 7517 11486 0.314 0.246 0.402
1995 9158 5982 14020 8246 6618 10275 0.447 0.332 0.601
1996 5625 3662 8639 6873 5357 8819 0.134 0.096 0.187
1997 3196 2083 4903 6541 5176 8265 0.123 0.091 0.167
1998 3117 2075 4680 6702 5372 8362 0.164 0.121 0.222
1999 5146 3329 7954 5531 4466 6850 0.341 0.260 0.446
2000 8174 5171 12920 4895 3752 6386 0.133 0.095 0.187
2001 22555 13493 37702 6887 4970 9543 0.070 0.032 0.154
2002 28198 17796 44678 11375 8269 15649 0.053 0.032 0.087
2003 19878 13222 29883 12143 9215 16001 0.095 0.062 0.145
2004 17044 11309 25688 11975 9460 15159 0.350 0.260 0.470
2005 25002 16580 37702 11962 9388 15240 0.215 0.147 0.315
2006 37728 25235 56404 13919 10918 17744 0.314 0.210 0.470
2007 26024 17210 39352 16427 12859 20985 0.218 0.157 0.302
2008 22480 14929 33850 17735 13631 23074 0.158 0.113 0.221
2009 18226 12077 27505 15550 12019 20118 0.153 0.106 0.220
2010 15138 9989 22943 13821 10636 17961 0.156 0.104 0.235
2011 18562 12392 27802 13279 10179 17323 0.087 0.057 0.133
2012 19611 13145 29257 15330 11909 19735 0.131 0.093 0.186
2013 25454 17109 37870 15969 12477 20440 0.215 0.156 0.297
2014 24162 16091 36281 14881 11564 19150 0.172 0.120 0.246
2015 13490 8984 20257 14305 11226 18227 0.251 0.183 0.345
2016 9648 6260 14870 12659 9863 16247 0.269 0.191 0.379
2017 12473 7997 19454 10052 7643 13220 0.330 0.233 0.468
2018 13313 8413 21068 8685 6384 11816 0.197 0.127 0.307
2019 14021 8719 22547 9940 7208 13706 0.169 0.110 0.261
2020 10966 6639 18115 9412 6698 13226 0.109 0.066 0.182
2021 10708 5655 20275 9837 6903 14020 0.091 0.045 0.187
2022 10233 4106 25502 10095 6777 15036 0.065 0.037 0.114
Table A.12. East Coast. SAM estimated model parameters.
Parameter name par sd(par) exp(par) Low High
logFpar_0 -9.15429 0.20618 0.00011 0.00007 0.00016
logFpar_1 -8.55926 0.14779 0.00019 0.00014 0.00026
logFpar_2 -8.30476 0.15290 0.00025 0.00018 0.00034
logFpar_3 -8.06434 0.15087 0.00031 0.00023 0.00043
logFpar_4 -7.48616 0.15473 0.00056 0.00041 0.00076
logFpar_5 -7.01685 0.16677 0.00090 0.00064 0.00125
logFpar_6 -6.48822 0.18910 0.00152 0.00104 0.00222
logFpar_7 -10.21313 0.20856 0.00004 0.00002 0.00006
logFpar_8 -8.72264 0.14570 0.00016 0.00012 0.00022
logFpar_9 -8.32657 0.12602 0.00024 0.00019 0.00031
logFpar_10 -8.02114 0.13913 0.00033 0.00025 0.00043
logFpar_11 -7.64540 0.16071 0.00048 0.00035 0.00066
logSdLogFsta_0 -0.51352 0.13470 0.59839 0.45707 0.78339
logSdLogN_0 -0.83103 0.16732 0.43560 0.31172 0.60873
logSdLogN_1 -1.86082 0.21202 0.15555 0.10179 0.23769
logSdLogObs_0 1.30453 0.15837 3.68596 2.68531 5.05948
logSdLogObs_1 0.59999 0.17190 1.82210 1.29200 2.56969
logSdLogObs_2 -0.16833 0.11418 0.84508 0.67255 1.06187
logSdLogObs_3 0.33560 0.20409 1.39878 0.92999 2.10388
logSdLogObs_4 -0.62990 0.25473 0.53265 0.32002 0.88653
logSdLogObs_5 -1.17830 0.32991 0.30780 0.15912 0.59542
logSdLogObs_6 -1.03329 0.15766 0.35583 0.25960 0.48774
logSdLogObs_7 -0.49905 0.20567 0.60711 0.40237 0.91603
logSdLogObs_8 -1.14763 0.23293 0.31739 0.19919 0.50572
logSdLogObs_9 -1.74925 0.20179 0.17390 0.11615 0.26036
transfIRARdist_0 0.01539 0.44643 1.01551 0.41583 2.47998
transfIRARdist_1 -0.77742 0.64489 0.45959 0.12654 1.66922
itrans_rho_0 1.70141 0.25511 5.48167 3.29100 9.13055
Table A.13. East Coast. SAM assessment results: stock numbers-at-age (in thousands).
Year 3 4 5 6 7 8 9 10+
1991 11479 3038 2035 1241 1192 846 765 3025
1992 20179 9000 2433 1535 940 782 536 2343
1993 20847 18933 6856 1906 1089 648 522 1861
1994 14341 18506 16187 4847 1455 750 486 1778
1995 9158 12114 13146 9841 2733 1009 460 1344
1996 5625 7624 8969 8925 5350 1228 367 843
1997 3196 4844 6377 7735 6837 3698 792 904
1998 3117 2485 3690 4821 6160 5016 2886 1390
1999 5146 2458 2110 2832 4063 4336 3663 3540
2000 8174 4179 1661 1474 2000 2574 2392 3798
2001 22555 6523 3111 1406 1285 1664 1741 4151
2002 28198 20716 4997 2367 1261 1123 1338 4478
2003 19878 25099 16229 3935 1872 1176 862 4664
2004 17044 17096 20083 11721 2989 1393 962 4281
2005 25002 14357 13525 12317 6178 1631 645 2627
2006 37728 21086 11653 9737 6852 3531 1191 2217
2007 26024 34218 16370 8258 5616 2935 1587 2074
2008 22480 23299 28305 10281 5244 3656 1627 2527
2009 18226 18488 18830 17133 7317 4206 2122 2913
2010 15138 15133 15001 15214 10777 5717 2318 3169
2011 18562 12121 12887 11578 10591 7141 3650 3559
2012 19611 16219 10933 9736 9627 8100 4766 5081
2013 25454 16649 12608 8958 7626 7178 4771 6282
2014 24162 23065 14311 8438 6910 6043 3559 6459
2015 13490 22548 20533 10315 6074 4928 4144 6631
2016 9648 11391 17923 13728 6663 3714 2828 6712
2017 12473 8473 8778 13228 7862 4187 2132 5377
2018 13313 10510 6890 6673 6927 4448 2528 4444
2019 14021 11869 7686 5786 4836 4243 3041 4580
2020 10966 12025 10253 5781 4271 3300 2647 4995
2021 10708 9152 10146 7805 3867 3394 2628 5896
2022 10233 8646 7953 7448 5276 3523 2572 6687
Table A.14. East Coast. SAM assessment results: fishing mortality-at-age.
Year 3 4 5 6 7 8 9 10+
1991 0.0112 0.0754 0.1320 0.1750 0.2613 0.3006 0.3006 0.3006
1992 0.0103 0.0708 0.1251 0.1675 0.2278 0.2444 0.2444 0.2444
1993 0.0124 0.0832 0.1356 0.1579 0.1780 0.1741 0.1741 0.1741
1994 0.0269 0.1860 0.3040 0.3477 0.3594 0.3745 0.3745 0.3745
1995 0.0267 0.1812 0.3079 0.4494 0.5955 0.7011 0.7011 0.7011
1996 0.0101 0.0646 0.1034 0.1462 0.1792 0.1766 0.1766 0.1766
1997 0.0125 0.0810 0.1220 0.1426 0.1484 0.1208 0.1208 0.1208
1998 0.0133 0.0907 0.1471 0.1772 0.2063 0.1983 0.1983 0.1983
1999 0.0235 0.1694 0.2707 0.3166 0.4129 0.5335 0.5335 0.5335
2000 0.0080 0.0573 0.0859 0.1011 0.1621 0.2592 0.2592 0.2592
2001 0.0044 0.0305 0.0454 0.0523 0.0855 0.1384 0.1384 0.1384
2002 0.0031 0.0216 0.0326 0.0379 0.0650 0.1073 0.1073 0.1073
2003 0.0050 0.0375 0.0623 0.0745 0.1205 0.1785 0.1785 0.1785
2004 0.0137 0.1146 0.2312 0.3172 0.4709 0.6161 0.6161 0.6161
2005 0.0108 0.0846 0.1644 0.2230 0.2843 0.3184 0.3184 0.3184
2006 0.0154 0.1182 0.2266 0.3246 0.4356 0.4672 0.4672 0.4672
2007 0.0177 0.1279 0.2104 0.2378 0.2586 0.2543 0.2543 0.2543
2008 0.0122 0.0842 0.1378 0.1582 0.1935 0.2164 0.2164 0.2164
2009 0.0087 0.0618 0.1182 0.1474 0.1943 0.2438 0.2438 0.2438
2010 0.0064 0.0489 0.1176 0.1744 0.2063 0.2341 0.2341 0.2341
2011 0.0030 0.0218 0.0581 0.0947 0.1200 0.1415 0.1415 0.1415
2012 0.0043 0.0334 0.0997 0.1519 0.1778 0.1932 0.1932 0.1932
2013 0.0061 0.0521 0.1813 0.2672 0.2835 0.2917 0.2917 0.2917
2014 0.0048 0.0415 0.1539 0.2213 0.2208 0.2212 0.2212 0.2212
2015 0.0057 0.0506 0.2082 0.3166 0.3391 0.3402 0.3402 0.3402
2016 0.0057 0.0519 0.2393 0.3530 0.3619 0.3406 0.3406 0.3406
2017 0.0067 0.0633 0.3356 0.4594 0.4355 0.3585 0.3585 0.3585
2018 0.0033 0.0300 0.1680 0.2595 0.2739 0.2543 0.2543 0.2543
2019 0.0027 0.0242 0.1369 0.2235 0.2326 0.2296 0.2296 0.2296
2020 0.0026 0.0227 0.1207 0.1676 0.1296 0.1060 0.1060 0.1060
2021 0.0026 0.0222 0.1102 0.1370 0.0997 0.0880 0.0880 0.0880
2022 0.0019 0.0162 0.0765 0.0924 0.0719 0.0689 0.0689 0.0689
Table A.15. North East. Catch numbers-at-age (in thousands).
Year 3 4 5 6 7 8 9 10+
1984 27 68 82 187 384 471 361 393
1985 29 32 90 140 333 411 376 521
1986 97 145 80 161 427 488 433 1099
1987 100 274 214 212 428 515 310 796
1988 104 659 541 190 181 348 330 1838
1989 39 218 464 618 759 697 542 1108
1990 316 337 553 660 601 613 526 1094
1991 338 389 195 130 140 144 154 481
1992 272 2703 2018 880 487 593 441 2798
1993 232 2710 2271 1097 570 346 181 1216
1994 375 2686 6766 3243 1249 486 180 1195
1995 470 3210 7334 5677 1869 700 389 959
1996 166 1134 3800 5910 4336 1826 567 948
1997 130 1143 3091 4781 4117 1919 475 511
1998 203 299 616 1186 2063 1489 1106 1080
1999 213 512 795 1353 1898 2102 1183 1127
2000 528 1669 793 658 896 1297 1375 1565
2001 102 1283 1017 531 423 899 744 1821
2002 200 1533 888 669 340 271 200 328
2003 24 1051 3319 2926 1908 1076 497 1269
2004 208 1594 2411 2048 1326 767 403 930
2005 299 861 1391 1459 2484 1188 702 1781
2006 559 570 1173 1288 1533 935 645 1528
2007 282 2120 1722 1008 1019 616 250 336
2008 481 1150 2364 1358 1011 599 277 360
2009 203 1632 3843 2422 999 873 750 573
2010 203 1281 1553 1629 1169 622 361 354
2011 0 127 452 1222 1181 819 503 166
2012 5 343 1540 1870 1488 939 491 783
2013 176 1002 2165 2552 2410 2146 1263 1901
2014 25 436 2130 2663 2129 1485 1011 884
2015 12 195 1699 2815 2224 1237 866 1198
2016 132 729 2289 2248 2421 1858 774 1300
2017 0 10 235 920 1355 1107 1113 1000
2018 16 189 343 752 762 995 306 683
2019 0 4 66 133 144 586 664 891
2020 12 696 1284 724 665 985 589 391
2021 0 548 2125 2463 1575 1125 426 532
2022 61 634 1179 918 855 621 187 495
Table A.16. North East. Mean weights-at-age (total live weight) (kg) in total catch (also used for stock weights).
Year 3 4 5 6 7 8 9 10+
1984 0.107 0.150 0.157 0.170 0.182 0.202 0.197 0.211
1985 0.118 0.141 0.143 0.160 0.174 0.189 0.197 0.217
1986 0.131 0.156 0.180 0.197 0.202 0.210 0.219 0.239
1987 0.140 0.149 0.171 0.194 0.217 0.239 0.235 0.245
1988 0.110 0.139 0.164 0.166 0.171 0.163 0.185 0.191
1989 0.113 0.146 0.153 0.165 0.185 0.201 0.210 0.231
1990 0.155 0.157 0.173 0.188 0.196 0.205 0.217 0.243
1991 0.142 0.149 0.178 0.202 0.215 0.224 0.240 0.251
1992 0.126 0.135 0.157 0.176 0.190 0.207 0.221 0.230
1993 0.126 0.140 0.169 0.194 0.209 0.222 0.238 0.264
1994 0.129 0.134 0.146 0.170 0.190 0.198 0.211 0.230
1995 0.123 0.139 0.152 0.170 0.197 0.205 0.215 0.241
1996 0.137 0.145 0.158 0.175 0.198 0.214 0.233 0.255
1997 0.120 0.136 0.148 0.161 0.174 0.186 0.206 0.225
1998 0.144 0.151 0.165 0.175 0.189 0.207 0.214 0.227
1999 0.119 0.149 0.162 0.176 0.189 0.200 0.215 0.240
2000 0.138 0.158 0.192 0.201 0.213 0.224 0.235 0.258
2001 0.119 0.145 0.165 0.183 0.196 0.204 0.221 0.243
2002 0.131 0.143 0.168 0.195 0.211 0.216 0.227 0.246
2003 0.114 0.137 0.152 0.162 0.178 0.192 0.211 0.219
2004 0.128 0.145 0.169 0.181 0.193 0.206 0.207 0.229
2005 0.127 0.139 0.183 0.202 0.208 0.218 0.220 0.261
2006 0.136 0.138 0.163 0.182 0.198 0.210 0.220 0.257
2007 0.130 0.146 0.168 0.179 0.211 0.235 0.253 0.285
2008 0.173 0.152 0.160 0.186 0.217 0.237 0.261 0.292
2009 0.138 0.157 0.173 0.198 0.209 0.228 0.228 0.255
2010 0.149 0.155 0.158 0.171 0.188 0.209 0.232 0.251
2011 0.149 0.144 0.150 0.163 0.178 0.199 0.219 0.255
2012 0.111 0.132 0.142 0.159 0.178 0.199 0.211 0.243
2013 0.133 0.146 0.160 0.182 0.205 0.230 0.254 0.255
2014 0.135 0.139 0.145 0.160 0.181 0.192 0.209 0.243
2015 0.129 0.137 0.141 0.159 0.179 0.194 0.227 0.231
2016 0.134 0.147 0.155 0.168 0.176 0.190 0.203 0.238
2017 NA 0.145 0.153 0.165 0.186 0.195 0.216 0.248
2018 0.146 0.158 0.164 0.182 0.190 0.208 0.229 0.266
2019 NA 0.145 0.161 0.165 0.171 0.188 0.201 0.230
2020 0.129 0.144 0.161 0.177 0.201 0.238 0.258 0.285
2021 NA 0.151 0.168 0.180 0.195 0.210 0.233 0.260
2022 0.143 0.150 0.162 0.176 0.182 0.203 0.220 0.227

Clupea

Table A.17. North East. Research-vessel survey data. Catch rates (numbers hour-1metre-1) by age class and year.
Year 3 4 5 6 7 8 9 10+
1997 0.995 2.332 3.747 6.002 7.409 4.338 1.314 2.457
1998 1.281 1.324 1.767 1.585 3.182 4.390 4.135 3.631
1999 2.408 2.609 1.562 1.296 2.934 3.477 3.444 3.363
2000 2.774 4.929 2.175 1.205 1.852 2.519 2.774 2.409
2001 1.669 4.034 3.854 1.049 1.658 2.173 2.115 2.579
2002 4.397 7.120 4.974 2.219 1.505 1.871 2.160 2.164
2003 1.059 5.831 8.321 2.853 3.559 1.364 0.812 4.434
2004 1.620 2.642 5.229 4.052 2.116 1.052 1.100 2.456
2005 2.499 2.774 2.909 4.662 4.036 2.093 1.422 1.763
2006 3.342 4.996 4.501 3.527 4.461 3.092 2.653 3.507

Alba

Year 3 4 5 6 7 8 9 10+
2008 1.426 5.391 7.577 4.518 3.501 2.644 1.284 3.942
2009 1.912 3.540 5.775 5.357 3.453 2.531 1.159 5.547
2010 1.842 3.470 5.458 4.844 4.277 2.563 0.852 4.653
2011 1.229 4.170 5.597 4.739 5.194 3.168 1.485 5.098
2012 0.797 5.347 5.811 4.655 5.373 4.046 2.104 6.680
2013 0.723 5.562 6.241 3.545 3.553 2.927 1.756 8.656
2014 0.979 4.773 8.338 5.940 4.458 2.918 1.336 5.416
2015 0.494 6.238 7.633 8.179 5.700 3.021 1.491 8.747
2016 0.099 2.047 4.396 5.984 5.776 3.012 1.579 5.438
2017 0.870 1.373 2.588 4.450 4.231 2.553 1.279 4.251
2018 1.195 3.660 3.417 4.772 4.353 2.774 1.649 4.164
2019 1.244 4.320 3.201 3.914 3.856 2.366 1.306 3.269
2020 NA NA NA NA NA NA NA NA
2021 2.120 6.307 4.671 4.436 2.843 2.124 1.372 2.687
2022 1.061 3.401 4.892 3.879 2.532 1.596 0.838 2.141

Table A.18. North East. SAM assessment configuration file.

# Configuration saved:

#

# Where a matrix is specified rows corresponds to fleets and columns to ages.

# Same number indicates same parameter used

# Numbers (integers) starts from zero and must be consecutive

#

$minAge

# The minimium age class in the assessment

3

$maxAge

# The maximum age class in the assessment

10

$maxAgePlusGroup

# Is last age group considered a plus group (1 yes, or 0 no).

1 0 0

$keyLogFsta

# Coupling of the fishing mortality states (nomally only first row is used).

0 1 2 3 4 5 6 6

-1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1

$corFlag

# Correlation of fishing mortality across ages (0 independent, 1 compound symmetry, or 2 AR(1)

2

$keyLogFpar

# Coupling of the survey catchability parameters (nomally first row is not used, as that is covered by fishing mortality).

-1 -1 -1 -1 -1 -1 -1 -1

0 1 2 3 4 5 6 -1

7 8 9 10 11 11 11 -1

$keyQpow

# Density dependent catchability power parameters (if any).

-1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1

$keyVarF

# Coupling of process variance parameters for log(F)-process (nomally only first row is used)

0 0 0 0 0 0 0 0

-1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1

$keyVarLogN

# Coupling of process variance parameters for log(N)-process

0 1 1 1 1 1 1 1

$keyVarObs

# Coupling of the variance parameters for the observations.

0 1 2 2 2 2 2 3

4 5 5 5 5 5 5 -1

6 7 7 7 7 7 7 -1

$obsCorStruct

# Covariance structure for each fleet ("ID" independent, "AR" AR(1), or "US" for unstructured). | Possible values are: "ID" "AR" "US"

"ID" "ID" "ID"

$keyCorObs

# Coupling of correlation parameters can only be specified if the AR(1) structure is chosen above.

# NA's indicate where correlation parameters can be specified (-1 where they cannot).

#3-4 4-5 5-6 6-7 7-8 8-9 9-10

NA NA NA NA NA NA NA

NA NA NA NA NA NA -1

NA NA NA NA NA NA -1

$stockRecruitmentModelCode

# Stock recruitment code (0 for plain random walk, 1 for Ricker, and 2 for Beverton-Holt).

0

$noScaledYears

# Number of years where catch scaling is applied.

0

$keyScaledYears

# A vector of the years where catch scaling is applied.

$keyParScaledYA

# A matrix specifying the couplings of scale parameters (nrow = no scaled years, ncols = no ages).

$fbarRange

# lowest and higest age included in Fbar

4 8

$keyBiomassTreat

# To be defined only if a biomass survey is used (0 SSB index, 1 catch index, and 2 FSB index).

-1 -1 -1

$obsLikelihoodFlag

# Option for observational likelihood | Possible values are: "LN" "ALN"

"LN" "LN" "LN"

$fixVarToWeight

# If weight attribute is supplied for observations this option sets the treatment (0 relative weight, 1 fix variance to weight).

0

Table A.19. North East. SAM assessment stock summary. Recruitment is in thousands and SSB in tonnes. ‘Low’ and ‘High’ refer to lower and upper 95% confidence intervals.
Year R(age 3) Low High SSB Low High Fbar(4-8) Low High
1984 8209 6285 10721 8663 6952 10796 0.043 0.023 0.078
1985 8802 7107 10902 8468 6973 10284 0.042 0.025 0.071
1986 7269 6089 8677 9507 8016 11275 0.051 0.039 0.069
1987 6149 5240 7216 9270 7892 10888 0.064 0.044 0.093
1988 5246 4519 6089 6985 6054 8058 0.071 0.050 0.102
1989 7642 6671 8755 7409 6473 8481 0.160 0.127 0.201
1990 13176 11827 14679 8314 7460 9267 0.201 0.165 0.245
1991 24069 21681 26721 9915 9068 10842 0.057 0.048 0.068
1992 44760 40631 49308 13555 12646 14530 0.273 0.235 0.317
1993 45168 40843 49949 17499 16424 18643 0.205 0.177 0.237
1994 34850 31353 38737 18460 17372 19616 0.285 0.252 0.323
1995 19920 17902 22166 17531 16460 18673 0.302 0.264 0.344
1996 11890 10515 13444 15391 14369 16486 0.353 0.311 0.402
1997 7479 6605 8469 10866 10013 11793 0.328 0.288 0.373
1998 8842 7774 10058 9440 8577 10389 0.180 0.153 0.210
1999 14341 12584 16343 8894 8047 9830 0.267 0.232 0.308
2000 17955 15709 20521 9894 8931 10962 0.243 0.209 0.283
2001 21531 18697 24795 9554 8631 10576 0.195 0.164 0.231
2002 18531 15904 21592 10659 9654 11768 0.109 0.090 0.133
2003 14629 12568 17028 10127 9209 11137 0.361 0.306 0.424
2004 13744 11806 16001 9879 8932 10926 0.260 0.215 0.313
2005 15989 13723 18629 10133 9116 11262 0.288 0.233 0.357
2006 20901 18041 24214 10237 9186 11407 0.250 0.199 0.313
2007 21372 18355 24885 11302 10086 12664 0.191 0.144 0.252
2008 19210 16448 22436 13037 11593 14661 0.191 0.159 0.228
2009 17672 15214 20526 12833 11373 14481 0.275 0.216 0.351
2010 18749 16175 21733 12029 10564 13698 0.167 0.131 0.214
2011 22226 19195 25734 12590 11054 14338 0.119 0.090 0.156
2012 22227 19191 25742 12461 10986 14135 0.164 0.134 0.200
2013 19066 16378 22196 14501 12770 16468 0.290 0.240 0.350
2014 15886 13415 18811 12119 10557 13913 0.245 0.197 0.306
2015 9672 8123 11515 10420 9038 12014 0.244 0.195 0.305
2016 8290 6969 9862 9275 7994 10760 0.313 0.254 0.384
2017 10057 8361 12097 8005 6753 9489 0.173 0.129 0.234
2018 14295 11655 17533 8775 7378 10436 0.127 0.092 0.176
2019 15032 11932 18938 8747 7367 10386 0.051 0.037 0.072
2020 17970 13863 23295 10733 9033 12754 0.167 0.128 0.217
2021 16188 11398 22990 11183 9298 13450 0.322 0.243 0.427
2022 16562 8928 30722 10617 8267 13635 0.164 0.115 0.234
Table A.20. North East. SAM estimated model parameters.
Parameter name par sd(par) exp(par) Low High
logFpar_0 -8.92636 0.143621 0.000133 9.97E-05 0.000177
logFpar_1 -8.01679 0.092493 0.000330 0.000274 0.000397
logFpar_2 -7.71677 0.093442 0.000445 0.000369 0.000537
logFpar_3 -7.77724 0.095763 0.000419 0.000346 0.000508
logFpar_4 -7.26 0.100794 0.000703 0.000575 0.000860
logFpar_5 -7.00215 0.112119 0.000910 0.000727 0.001139
logFpar_6 -6.65758 0.134204 0.001284 0.000982 0.001680
logFpar_7 -9.62718 0.168698 6.59E-05 4.70E-05 9.24E-05
logFpar_8 -8.06075 0.075535 0.000316 0.000271 0.000367
logFpar_9 -7.58348 0.076209 0.000509 0.000437 0.000593
logFpar_10 -7.32325 0.081962 0.000660 0.000560 0.000778
logFpar_11 -7.11671 0.101821 0.000811 0.000662 0.000995
logSdLogFsta_0 -0.44752 0.109428 0.639210 0.513565 0.795593
logSdLogN_0 -1.17389 0.120626 0.309161 0.242890 0.393513
logSdLogObs_0 1.229488 0.144719 3.419479 2.560108 4.567321
logSdLogObs_1 0.65633 0.137255 1.927704 1.464947 2.536639
logSdLogObs_2 -0.61039 0.153417 0.543138 0.399627 0.738187
logSdLogObs_3 0.288781 0.151292 1.334799 0.986291 1.806453
logSdLogObs_4 -0.77152 0.217652 0.462311 0.299147 0.714471
logSdLogObs_5 -1.25274 0.099175 0.285721 0.234315 0.348405
logSdLogObs_6 -0.52667 0.193912 0.590568 0.400719 0.870360
logSdLogObs_7 -1.61227 0.092009 0.199435 0.165914 0.239728
itrans_rho_0 1.606913 0.159562 4.987390 3.624764 6.862258
Table A.21. North East. SAM assessment results: stock numbers-at-age (in thousands).
Year 3 4 5 6 7 8 9 10+
1984 8209 8277 8567 6827 6148 5469 3999 4864
1985 8802 7036 7025 7282 5732 4964 4267 6874
1986 7269 7545 5970 5970 6118 4638 3880 8651
1987 6149 6223 6377 5057 4988 4887 3547 9496
1988 5246 5248 5181 5306 4155 3942 3734 9967
1989 7642 4465 4306 4212 4296 3294 3046 10578
1990 13176 6468 3523 3260 3081 3040 2265 9530
1991 24069 11128 5008 2542 2245 2079 2025 7967
1992 44760 20598 9281 4113 2065 1804 1648 7929
1993 45168 37930 15700 6212 2718 1309 1016 5827
1994 34850 38514 30393 11375 4311 1821 822 4693
1995 19920 29601 30104 20064 6846 2573 1114 3586
1996 11890 16854 22766 19588 12028 4082 1504 2698
1997 7479 10086 13264 15900 11557 6346 1926 2160
1998 8842 6304 7645 8742 9365 6257 3656 2537
1999 14341 7530 5119 5959 6390 6220 3922 3719
2000 17955 12135 5833 3685 3947 3838 3482 4341
2001 21531 15178 9301 4263 2565 2577 2110 4039
2002 18531 18337 12059 7068 3157 1794 1471 3323
2003 14629 15837 14989 9516 5471 2399 1292 3482
2004 13744 12418 12102 9867 5626 2924 1174 2430
2005 15989 11671 9648 8343 6525 3456 1734 2056
2006 20901 13595 9231 6915 5554 3573 1868 1922
2007 21372 17792 10885 6760 4778 3245 2044 2103
2008 19210 18191 14225 7885 4799 3166 2167 2907
2009 17672 16335 14500 10079 5495 3226 2176 3708
2010 18749 15009 12815 9583 6376 3406 1892 3571
2011 22226 16036 12354 9640 6801 4401 2300 3742
2012 22227 19084 13545 9960 7307 4921 3078 4274
2013 19066 19076 16000 10422 7033 4978 3303 5091
2014 15886 16337 15803 11697 6625 4017 2514 4298
2015 9672 13623 13613 11741 7767 4029 2228 3676
2016 8290 8291 11347 10046 7729 4746 2268 3255
2017 10057 7096 6820 7909 6245 4288 2374 2855
2018 14295 8642 6042 5547 5940 4234 2415 2856
2019 15032 12289 7358 4940 4268 4348 2702 3461
2020 17970 12932 10546 6240 4117 3479 3210 4450
2021 16188 15433 10903 8185 4596 2913 2094 5175
2022 16562 13863 12694 7439 4937 2630 1419 4692
Table A.22. North East. SAM assessment results: fishing mortality-at-age (in thousands).
Year 3 4 5 6 7 8 9 10+
1984 0.0041 0.0140 0.0125 0.0248 0.0638 0.0983 0.1040 0.1040
1985 0.0042 0.0144 0.0128 0.0242 0.0617 0.0963 0.1030 0.1030
1986 0.0053 0.0184 0.0162 0.0298 0.0748 0.1183 0.1273 0.1273
1987 0.0084 0.0332 0.0338 0.0468 0.0853 0.1188 0.1189 0.1189
1988 0.0108 0.0479 0.0568 0.0614 0.0825 0.1078 0.1086 0.1086
1989 0.0168 0.0868 0.1281 0.1621 0.1961 0.2250 0.2074 0.2074
1990 0.0189 0.1058 0.1761 0.2231 0.2432 0.2564 0.2424 0.2424
1991 0.0056 0.0315 0.0474 0.0574 0.0682 0.0821 0.0815 0.0815
1992 0.0160 0.1214 0.2510 0.2645 0.3059 0.4237 0.3470 0.3470
1993 0.0096 0.0719 0.1721 0.2150 0.2513 0.3147 0.2272 0.2272
1994 0.0134 0.0967 0.2655 0.3576 0.3659 0.3412 0.2803 0.2803
1995 0.0171 0.1127 0.2798 0.3619 0.3672 0.3871 0.4052 0.4052
1996 0.0144 0.0895 0.2094 0.3775 0.4897 0.6005 0.5153 0.5153
1997 0.0207 0.1272 0.2668 0.3796 0.4631 0.4018 0.3268 0.3268
1998 0.0104 0.0581 0.0997 0.1637 0.2597 0.3170 0.3598 0.3598
1999 0.0171 0.1050 0.1785 0.2627 0.3600 0.4304 0.4155 0.4155
2000 0.0179 0.1157 0.1636 0.2124 0.2770 0.4484 0.5111 0.5111
2001 0.0109 0.0799 0.1242 0.1508 0.2074 0.4110 0.4655 0.4655
2002 0.0070 0.0517 0.0868 0.1058 0.1248 0.1780 0.1698 0.1698
2003 0.0140 0.1188 0.2679 0.3753 0.4762 0.5649 0.5254 0.5254
2004 0.0134 0.1026 0.2215 0.2634 0.3375 0.3727 0.4114 0.4114
2005 0.0121 0.0846 0.1834 0.2564 0.4517 0.4658 0.5294 0.5294
2006 0.0110 0.0721 0.1615 0.2199 0.3868 0.4083 0.4385 0.4385
2007 0.0114 0.0739 0.1722 0.1925 0.2618 0.2531 0.2051 0.2051
2008 0.0120 0.0771 0.1944 0.2108 0.2468 0.2249 0.1634 0.1634
2009 0.0132 0.0929 0.2643 0.3077 0.3284 0.3833 0.3494 0.3494
2010 0.0062 0.0448 0.1348 0.1930 0.2207 0.2428 0.2281 0.2281
2011 0.0025 0.0188 0.0657 0.1274 0.1736 0.2072 0.1961 0.1961
2012 0.0031 0.0264 0.1120 0.1984 0.2339 0.2486 0.2175 0.2175
2013 0.0045 0.0384 0.1636 0.3034 0.4105 0.5334 0.5194 0.5194
2014 0.0038 0.0324 0.1471 0.2598 0.3476 0.4397 0.4666 0.4666
2015 0.0039 0.0325 0.1536 0.2677 0.3426 0.4247 0.4454 0.4454
2016 0.0055 0.0453 0.2105 0.3253 0.4386 0.5430 0.5097 0.5097
2017 0.0015 0.0113 0.0569 0.1359 0.2385 0.4237 0.4547 0.4547
2018 0.0013 0.0103 0.0517 0.1120 0.1616 0.2992 0.2706 0.2706
2019 0.0004 0.0030 0.0147 0.0321 0.0544 0.1532 0.1755 0.1755
2020 0.0023 0.0204 0.1031 0.1557 0.1960 0.3577 0.2420 0.2420
2021 0.0049 0.0452 0.2322 0.3553 0.4080 0.5688 0.2876 0.2876
2022 0.0029 0.0251 0.1161 0.1696 0.2089 0.3002 0.1557 0.1557
Table A.23. North West. Catch numbers-at-age (in thousands).
Year 3 4 5 6 7 8 9 10+
1982 1561 2029 2707 2746 2554 2215 1154 2641
1983 334 514 1000 2024 2247 2395 1659 2870
1984 1392 1760 1640 1903 1760 1721 955 2514
1985 724 1302 1113 1124 1261 1142 897 2139
1986 567 984 991 1290 1142 1333 1111 2299
1987 725 1107 1206 1518 1087 1571 1265 4038
1988 415 988 1230 1128 980 1318 1061 3317
1989 243 891 1401 1418 1451 1173 950 2444
1990 1143 791 669 859 945 833 650 2126
1991 822 1597 1013 1042 883 628 360 1061
1992 879 1258 1505 932 535 584 424 1221
1993 803 1726 1284 1054 486 363 257 537
1994 667 2371 3332 1709 892 565 257 1273
1995 528 1430 2234 2319 1174 786 328 1218
1996 538 1976 2705 2675 1656 1167 553 1714
1997 1242 2408 2771 2676 2453 1665 1010 1173
1998 1178 2822 2852 2738 1981 2173 1249 2008
1999 589 1523 1288 1020 889 663 299 464
2000 1557 3511 3456 2980 2562 2038 1279 1475
2001 1089 5099 4696 3884 2800 2505 1613 2924
2002 1353 6210 6936 3689 2672 1786 909 1855
2003 754 3259 5299 4301 2949 1809 1163 1651
2004 696 3092 4555 4073 2312 1399 871 1500
2005 662 2417 3168 3373 2119 963 586 1240
2006 59 448 1111 1881 1548 1137 551 719
2007 121 1446 1756 1485 1823 1039 712 966
2008 364 1969 4261 3518 1609 588 205 160
2009 524 885 1481 1621 1565 1077 638 416
2010 148 1069 1364 1244 1144 953 520 588
2011 438 1200 1422 1269 1158 1110 503 543
2012 38 795 2959 2356 1546 1231 672 694
2013 72 1173 1899 2584 1774 1529 697 1436
2014 4 849 2536 3027 2612 1277 683 974
2015 295 641 1690 2512 2383 1573 1027 1846
2016 66 1197 2337 3128 2955 1787 1060 1442
2017 127 915 2671 2038 1763 1505 782 1062
2018 30 640 1916 2105 1338 1284 776 1030
2019 1 394 1840 2299 1878 1405 713 672
2020 91 757 1404 1715 1776 742 272 495
2021 88 1177 2031 1828 1113 699 383 306
2022 174 2043 1791 726 479 297 186 322
Table A.24. North West. Mean weights-at-age in the catch (kg).
Year 3 4 5 6 7 8 9 10+
1982 0.120 0.140 0.168 0.179 0.194 0.213 0.224 0.246
1983 0.121 0.135 0.147 0.153 0.174 0.180 0.199 0.215
1984 0.139 0.153 0.167 0.178 0.191 0.194 0.207 0.243
1985 0.129 0.148 0.168 0.185 0.189 0.195 0.209 0.226
1986 0.124 0.146 0.152 0.163 0.176 0.186 0.196 0.210
1987 0.120 0.136 0.149 0.157 0.167 0.167 0.173 0.192
1988 0.134 0.148 0.160 0.167 0.176 0.184 0.185 0.197
1989 0.129 0.146 0.157 0.164 0.173 0.180 0.189 0.202
1990 0.135 0.154 0.175 0.165 0.175 0.178 0.188 0.213
1991 0.126 0.142 0.162 0.174 0.191 0.200 0.212 0.213
1992 0.134 0.150 0.164 0.177 0.188 0.189 0.194 0.203
1993 0.136 0.153 0.169 0.181 0.192 0.204 0.212 0.223
1994 0.133 0.150 0.173 0.193 0.207 0.212 0.221 0.235
1995 0.143 0.152 0.164 0.179 0.196 0.204 0.213 0.232
1996 0.132 0.151 0.169 0.181 0.193 0.198 0.198 0.207
1997 0.139 0.145 0.163 0.180 0.197 0.205 0.216 0.236
1998 0.140 0.151 0.170 0.185 0.195 0.194 0.199 0.217
1999 0.130 0.157 0.177 0.195 0.212 0.217 0.222 0.244
2000 0.140 0.154 0.175 0.191 0.200 0.210 0.218 0.220
2001 0.131 0.149 0.164 0.178 0.194 0.199 0.205 0.219
2002 0.133 0.150 0.167 0.189 0.204 0.213 0.223 0.233
2003 0.133 0.143 0.159 0.178 0.196 0.209 0.216 0.228
2004 0.127 0.146 0.166 0.182 0.196 0.201 0.215 0.223
2005 0.128 0.147 0.172 0.187 0.200 0.213 0.229 0.223
2006 0.133 0.143 0.158 0.172 0.184 0.197 0.207 0.227
2007 0.127 0.140 0.155 0.160 0.173 0.194 0.193 0.190
2008 0.134 0.158 0.178 0.200 0.217 0.241 0.265 0.258
2009 0.135 0.153 0.172 0.187 0.198 0.212 0.223 0.249
2010 0.135 0.150 0.168 0.185 0.204 0.220 0.241 0.269
2011 0.148 0.158 0.159 0.173 0.189 0.205 0.222 0.243
2012 0.131 0.135 0.151 0.165 0.186 0.199 0.210 0.235
2013 0.131 0.148 0.161 0.170 0.188 0.201 0.216 0.234
2014 0.138 0.145 0.156 0.173 0.194 0.229 0.247 0.260
2015 0.131 0.151 0.160 0.171 0.185 0.203 0.217 0.227
2016 0.133 0.137 0.149 0.162 0.176 0.199 0.207 0.232
2017 0.142 0.152 0.162 0.180 0.192 0.208 0.224 0.252
2018 0.145 0.147 0.164 0.182 0.198 0.214 0.231 0.257
2019 0.114 0.148 0.159 0.177 0.194 0.208 0.226 0.243
2020 0.140 0.162 0.175 0.186 0.198 0.224 0.226 0.255
2021 0.148 0.155 0.179 0.198 0.209 0.219 0.233 0.256
2022 0.146 0.169 0.197 0.226 0.242 0.250 0.255 0.278
Table A.25. Summary of Marine Directorate West Coast scallop dredge surveys.
Vessel Cruise start date Cruise end date No. of dredges Dredge width (m) WK hauls NW hauls No. of scallops
R.V. Aora 21-Jun-93 09-Jul-93 3 4.5 31 78 11989
R.V. Aora 20-Jun-94 08-Jul-94 3 4.5 25 88 12068
R.V. Aora 19-Jun-95 07-Jul-95 3 4.5 25 92 10807
R.V. Aora 17-Jun-96 05-Jul-96 3 4.5 26 85 10124
R.V. Aora 16-Jun-97 04-Jul-97 3 4.5 24 79 9813
R.V. Aora 15-Jun-98 03-Jul-98 3 4.5 24 88 11561
R.V. Aora 14-Jun-99 30-Jun-99 3 4.5 26 90 10373
R.V. Aora 12-Jun-00 30-Jun-00 3 4.5 28 84 12073
R.V. Aora 09-Jul-01 27-Jul-01 3 4.5 26 96 11180
R.V. Aora 10-Jun-02 26-Jun-02 3 4.5 26 83 11259
R.V. Aora II 04-Aug-03 22-Aug-03 6 9 24 78 21134
R.V. Aora II 09-Aug-04 27-Aug-04 6 9 24 76 18963
R.V. Aora II 08-Aug-05 27-Aug-05 6 9 23 74 17912
R.V. Aora II 07-Aug-06 26-Aug-06 6 9 23 82 22190
R.V. Aora II 21-May-07 07-Jun-07 6 9 22 75 13404
R.V. Alba na Mara 24-Apr-08 15-May-08 6 9 22 70 12608
R.V. Alba na Mara 19-Apr-09 08-May-09 6 9 22 69 13817
R.V. Alba na Mara 02-Apr-10 20-Apr-10 6 9 21 68 12293
R.V. Alba na Mara 04-Apr-11 23-Apr-11 6 9 22 65 14944
R.V. Alba na Mara 09-Apr-12 23-Apr-12 6 9 21 54 14905
R.V. Alba na Mara 03-Apr-13 22-Apr-13 6 9 18 61 14855
R.V. Alba na Mara 04-Apr-14 23-Apr-14 6 9 15 53 10835
R.V. Alba na Mara 29-Mar-15 17-Apr-15 6 9 16 55 13357
R.V. Alba na Mara 28-Mar-16 15-Apr-16 6 9 17 56 13345
R.V. Alba na Mara 09-Apr-17 23-Apr-17 6 9 20 52 10873
R.V. Alba na Mara 16-Apr-18 30-Apr-18 6 9 18 63 11972
R.V. Alba na Mara 13-Apr-19 28-Apr-19 6 9 9 58 11467
R.V. Alba na Mara 12-Apr-21 23-Apr-21 6 9 0 28 2583
R.V. Alba na Mara 03-May-22 17-May-22 6 9 11 50 7669

Aora I

Table A.26.North West. Research-vessel survey data. Catch rates (numbers hour-1metre-1) by age class and year.
Year 3 4 5 6 7 8 9 10+
1993 6.419 12.511 9.196 5.894 3.667 2.529 3.067 8.838
1994 3.694 9.164 11.070 7.548 4.358 2.769 2.166 9.943
1995 5.238 7.702 10.369 8.019 4.299 2.845 2.303 5.609
1996 3.472 7.674 7.652 8.086 6.195 2.819 1.608 6.527
1997 2.844 9.430 8.748 6.458 5.741 3.596 2.127 5.088
1998 7.525 8.335 8.502 5.836 4.947 4.194 3.012 5.260
1999 4.596 9.632 6.215 5.233 4.155 3.831 3.092 4.494
2000 9.722 11.323 9.141 4.654 4.715 3.467 3.200 4.511
2001 6.224 14.291 8.260 5.006 2.936 2.700 1.588 2.883
2002 6.288 9.693 13.824 5.759 3.443 2.637 2.018 2.760

Aora II

Year 3 4 5 6 7 8 9 10+
2003 7.885 10.475 9.346 7.926 3.756 2.264 1.865 4.215
2004 4.820 7.877 8.619 7.580 5.450 2.845 2.130 4.143
2005 2.272 5.046 6.377 7.242 6.019 4.795 3.682 5.774
2006 2.441 6.426 6.424 6.508 5.586 4.390 3.350 4.824
2007 0.856 3.797 4.054 4.662 4.382 3.666 2.932 4.400

Alba na Mara

Year 3 4 5 6 7 8 9 10+
2008 0.290 1.328 3.688 4.373 4.376 3.451 2.683 7.959
2009 0.781 2.723 3.886 4.420 3.574 3.116 1.572 7.93
2010 1.307 3.465 3.319 3.167 2.757 1.967 0.812 7.277
2011 0.832 4.926 6.328 4.058 4.242 3.104 1.812 7.756
2012 1.309 6.365 9.749 5.404 4.021 3.453 1.839 9.112
2013 1.377 7.088 7.935 5.854 4.467 3.478 1.953 5.705
2014 0.681 4.596 6.675 5.629 4.284 3.015 1.633 5.921
2015 1.390 5.284 6.565 6.576 5.160 2.900 1.755 6.023
2016 1.132 8.030 5.836 5.433 5.304 3.470 2.056 6.541
2017 1.301 7.808 7.033 5.092 4.776 2.754 1.419 4.304
2018 1.240 7.540 7.596 6.381 3.913 2.317 1.447 3.219
2019 1.698 6.882 7.504 7.957 5.324 2.611 1.573 3.777
2020 NA NA NA NA NA NA NA NA
2021 NA NA NA NA NA NA NA NA
2022 1.099 4.854 5.648 5.913 3.674 2.934 1.359 3.239

Table A.27. North West. SAM assessment configuration file.

# Configuration saved:

#

# Where a matrix is specified rows corresponds to fleets and columns to ages.

# Same number indicates same parameter used

# Numbers (integers) starts from zero and must be consecutive

#

$minAge

# The minimium age class in the assessment

3

$maxAge

# The maximum age class in the assessment

10

$maxAgePlusGroup

# Is last age group considered a plus group (1 yes, or 0 no).

1 0 0 0

$keyLogFsta

# Coupling of the fishing mortality states (nomally only first row is used).

0 1 2 3 4 5 5 5

-1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1

$corFlag

# Correlation of fishing mortality across ages (0 independent, 1 compound symmetry, or 2 AR(1)

2

$keyLogFpar

# Coupling of the survey catchability parameters (nomally first row is not used, as that is covered by fishing mortality).

-1 -1 -1 -1 -1 -1 -1 -1

0 1 2 3 4 5 5 -1

6 7 8 9 10 11 11 -1

12 13 14 15 16 17 17 -1

$keyQpow

# Density dependent catchability power parameters (if any).

-1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1

$keyVarF

# Coupling of process variance parameters for log(F)-process (nomally only first row is used)

0 0 0 0 0 0 0 0

-1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1

$keyVarLogN

# Coupling of process variance parameters for log(N)-process

0 1 1 1 1 1 1 1

#0 1 2 2 2 2 2 3

$keyVarObs

# Coupling of the variance parameters for the observations.

0 1 2 2 2 2 2 2

3 4 5 5 5 5 5 -1

6 7 8 8 8 8 8 -1

9 10 11 11 11 11 11 -1

$obsCorStruct

# Covariance structure for each fleet ("ID" independent, "AR" AR(1), or "US" for unstructured). | Possible values are: "ID" "AR" "US"

"ID" "ID" "ID" "AR"

$keyCorObs

# Coupling of correlation parameters can only be specified if the AR(1) structure is chosen above.

# NA's indicate where correlation parameters can be specified (-1 where they cannot).

# 3-4 4-5 5-6 6-7 7-8 8-9 9-10

NA NA NA NA NA NA NA

NA NA NA NA NA NA -1

# 0 0 0 0 1 1 -1

NA NA NA NA NA NA -1

# NA NA NA NA NA NA -1

0 1 1 1 1 1 -1

$stockRecruitmentModelCode

# Stock recruitment code (0 for plain random walk, 1 for Ricker, and 2 for Beverton-Holt).

0

$noScaledYears

# Number of years where catch scaling is applied.

0

$keyScaledYears

# A vector of the years where catch scaling is applied.

$keyParScaledYA

# A matrix specifying the couplings of scale parameters (nrow = no scaled years, ncols = no ages).

$fbarRange

# lowest and higest age included in Fbar

4 8

$keyBiomassTreat

# To be defined only if a biomass survey is used (0 SSB index, 1 catch index, and 2 FSB index).

-1 -1 -1

$obsLikelihoodFlag

# Option for observational likelihood | Possible values are: "LN" "ALN"

"LN" "LN" "LN" "LN"

$fixVarToWeight

# If weight attribute is supplied for observations this option sets the treatment (0 relative weight, 1 fix variance to weight).

0

Table A.28. North West. SAM assessment stock summary. Recruitment is in thousands and SSB in tonnes. ‘Low’ and ‘High’ refer to lower and upper 95% confidence intervals.
Year R(age 3) Low High SSB Low High Fbar(4-8) Low High
1982 20416 17325 24059 21948 20032 24047 0.171 0.139 0.210
1983 19376 16687 22498 17824 16338 19446 0.146 0.122 0.175
1984 17993 15527 20850 18379 16883 20009 0.154 0.131 0.181
1985 16232 14062 18736 16368 15047 17806 0.127 0.107 0.151
1986 15916 13878 18253 14376 13241 15608 0.140 0.119 0.164
1987 15458 13569 17609 12545 11578 13592 0.185 0.160 0.214
1988 12640 11167 14307 11814 10902 12802 0.189 0.153 0.233
1989 13627 12158 15273 10610 9845 11434 0.211 0.178 0.252
1990 17016 15374 18832 10581 9853 11363 0.167 0.143 0.195
1991 21373 19406 23540 11105 10374 11888 0.158 0.138 0.182
1992 28813 26220 31662 13010 12217 13855 0.149 0.131 0.170
1993 29401 26827 32223 15248 14368 16182 0.112 0.098 0.127
1994 26265 23913 28849 16939 16016 17915 0.165 0.144 0.190
1995 25599 23316 28104 17239 16321 18209 0.159 0.140 0.181
1996 26018 23686 28580 17232 16326 18189 0.196 0.176 0.220
1997 24811 22435 27439 17270 16327 18267 0.228 0.203 0.258
1998 27655 25004 30588 17153 16198 18163 0.262 0.232 0.295
1999 30925 27927 34245 17793 16765 18884 0.131 0.100 0.171
2000 38030 33932 42623 20179 19083 21337 0.271 0.241 0.304
2001 33451 29583 37824 19203 18098 20374 0.399 0.361 0.440
2002 28981 25102 33460 18048 16864 19316 0.407 0.361 0.458
2003 22677 19494 26380 15278 14107 16545 0.447 0.390 0.513
2004 19560 16936 22590 13182 12013 14464 0.424 0.354 0.508
2005 18988 16585 21740 11949 10855 13154 0.377 0.309 0.461
2006 18615 16366 21173 10707 9766 11740 0.280 0.225 0.349
2007 17394 15451 19580 10144 9299 11065 0.315 0.249 0.399
2008 16768 14979 18771 11452 10564 12414 0.238 0.193 0.294
2009 19955 17922 22218 11388 10547 12297 0.221 0.181 0.271
2010 23632 21150 26404 12459 11569 13417 0.185 0.157 0.219
2011 22412 20146 24932 13397 12454 14411 0.173 0.142 0.212
2012 21828 19573 24343 12990 12094 13953 0.212 0.180 0.250
2013 18845 16792 21149 13362 12421 14375 0.245 0.210 0.285
2014 15724 13825 17884 12889 11921 13936 0.255 0.215 0.302
2015 17989 15487 20897 12011 11011 13102 0.298 0.259 0.343
2016 16567 13841 19831 10715 9627 11926 0.379 0.322 0.445
2017 14967 11732 19093 10418 9053 11989 0.352 0.298 0.416
2018 13189 9621 18081 9593 7928 11609 0.341 0.275 0.423
2019 15992 11085 23071 8768 6823 11267 0.366 0.272 0.493
2020 16597 10930 25203 9610 6930 13328 0.287 0.190 0.432
2021 17962 10476 30797 10345 6882 15550 0.246 0.148 0.408
2022 18744 10635 33035 11958 7417 19277 0.155 0.084 0.287
Table A.29. North West. SAM estimated model parameters.
Parameter name par sd(par) exp(par) Low High
logFpar_0 -8.52315 0.092227 0.000199 0.000165 0.000239
logFpar_1 -7.6713 0.046311 0.000466 0.000425 0.000511
logFpar_2 -7.39484 0.060415 0.000614 0.000544 0.000693
logFpar_3 -7.35973 0.061431 0.000636 0.000563 0.000720
logFpar_4 -7.26012 0.063459 0.000703 0.000619 0.000798
logFpar_5 -7.072 0.058857 0.000849 0.000754 0.000955
logFpar_6 -8.73019 0.307491 0.000162 8.74E-05 0.000299
logFpar_7 -7.77353 0.121354 0.000421 0.000330 0.000536
logFpar_8 -7.43089 0.129485 0.000593 0.000457 0.000768
logFpar_9 -7.02013 0.131288 0.000894 0.000687 0.001162
logFpar_10 -6.75664 0.134678 0.001163 0.000888 0.001523
logFpar_11 -6.26573 0.120749 0.001900 0.001493 0.002419
logFpar_12 -9.74746 0.145113 5.84E-05 4.37E-05 7.81E-05
logFpar_13 -8.00647 0.153969 0.000333 0.000245 0.000453
logFpar_14 -7.57013 0.094304 0.000516 0.000427 0.000623
logFpar_15 -7.35132 0.093986 0.000642 0.000532 0.000774
logFpar_16 -7.10554 0.095909 0.000821 0.000677 0.000994
logFpar_17 -6.95657 0.100679 0.000952 0.000779 0.001165
logSdLogFsta_0 -1.20767 0.137980 0.298894 0.226813 0.393881
logSdLogN_0 -1.90426 0.135732 0.148933 0.113526 0.195383
logSdLogObs_0 1.610111 0.125182 5.003368 3.895210 6.426788
logSdLogObs_1 0.424631 0.163805 1.529026 1.101884 2.121749
logSdLogObs_2 0.102444 0.076175 1.107875 0.951320 1.290195
logSdLogObs_3 -1.26234 0.230202 0.282990 0.178575 0.448459
logSdLogObs_4 -2.04335 0.255371 0.129594 0.077763 0.215971
logSdLogObs_5 -1.73044 0.117533 0.177207 0.140085 0.224165
logSdLogObs_6 -0.38527 0.319684 0.680269 0.358927 1.289302
logSdLogObs_7 -1.3808 0.337413 0.251377 0.128013 0.493627
logSdLogObs_8 -1.31391 0.168955 0.268768 0.191701 0.376816
logSdLogObs_9 -0.75865 0.202296 0.468296 0.312471 0.701831
logSdLogObs_10 -0.65427 0.190542 0.519822 0.355101 0.760953
logSdLogObs_11 -1.22845 0.190761 0.292746 0.199893 0.428730
transfIRARdist_0 -2.32023 0.608125 0.098251 0.029116 0.331550
transfIRARdist_1 -1.41715 0.444420 0.242404 0.099660 0.589602
itrans_rho_0 1.449209 0.192032 4.259745 2.901261 6.254326
Table A.30. North West. SAM assessment results: stock numbers-at-age (in thousands).
Year 3 4 5 6 7 8 9 10+
1982 20416 21193 21166 18141 13610 11499 5662 13700
1983 19376 16890 16719 16175 13068 9469 7646 12874
1984 17993 16179 13625 13155 12040 9338 6371 13811
1985 16232 14854 12691 10434 9630 8656 6460 13963
1986 15916 13465 11781 9891 7867 7177 6239 14719
1987 15458 13212 10667 9142 7362 5775 5008 14627
1988 12640 12774 10310 8064 6532 5139 3671 12483
1989 13627 10452 9982 7786 5752 4518 3246 10201
1990 17016 11245 8075 7417 5420 3841 2778 8268
1991 21373 14155 8862 6175 5409 3825 2540 7303
1992 28813 17721 10992 6631 4436 3909 2711 6977
1993 29401 24020 13889 8209 4797 3257 2821 6986
1994 26265 24666 19153 10659 6140 3674 2503 7541
1995 25599 21886 19131 13898 7475 4419 2667 7294
1996 26018 21466 17293 14273 9876 5357 3133 7070
1997 24811 21747 16638 12556 9848 6786 3556 6765
1998 27655 20640 16511 11798 8431 6498 4291 6526
1999 30925 22941 15373 11480 7735 5386 3827 6368
2000 38030 26065 18175 11782 8622 5756 3907 7385
2001 33451 31660 19272 12390 7620 5408 3439 6748
2002 28981 27679 22448 12030 7083 4065 2582 4862
2003 22677 23944 19184 13417 6726 3744 2050 3753
2004 19560 18851 17002 11567 7212 3275 1687 2616
2005 18988 16332 13569 10434 6301 3598 1545 2029
2006 18615 15972 12168 8742 5958 3291 1797 1785
2007 17394 15814 12626 8724 5628 3472 1804 1962
2008 16768 14765 12351 8790 5410 3104 1824 1976
2009 19955 14250 11575 8698 5756 3399 1963 2403
2010 23632 17008 11362 8431 5916 3693 2095 2694
2011 22412 20189 13767 8515 6005 3995 2372 3075
2012 21828 19177 16438 10367 6107 4130 2623 3577
2013 18845 18680 15548 11973 7024 3989 2586 3885
2014 15724 16129 15147 11306 7825 4324 2337 3792
2015 17989 13463 13101 10988 7335 4655 2510 3558
2016 16567 15409 10926 9429 6982 4103 2386 3110
2017 14967 14183 12291 7373 5468 3505 1861 2493
2018 13189 12817 11385 8363 4389 2885 1662 2065
2019 15992 11300 10409 7990 5094 2328 1347 1738
2020 16597 13719 9189 7285 4766 2560 1033 1369
2021 17962 14227 11120 6496 4602 2699 1408 1320
2022 18744 15391 11420 7814 4216 2842 1649 1667
Table A.31. North West. SAM assessment results: fishing mortality-at-age.
Year 3 4 5 6 7 8 9 10+
1982 20416 21193 21166 18141 13610 11499 5662 13700
1983 19376 16890 16719 16175 13068 9469 7646 12874
1984 17993 16179 13625 13155 12040 9338 6371 13811
1985 16232 14854 12691 10434 9630 8656 6460 13963
1986 15916 13465 11781 9891 7867 7177 6239 14719
1987 15458 13212 10667 9142 7362 5775 5008 14627
1988 12640 12774 10310 8064 6532 5139 3671 12483
1989 13627 10452 9982 7786 5752 4518 3246 10201
1990 17016 11245 8075 7417 5420 3841 2778 8268
1991 21373 14155 8862 6175 5409 3825 2540 7303
1992 28813 17721 10992 6631 4436 3909 2711 6977
1993 29401 24020 13889 8209 4797 3257 2821 6986
1994 26265 24666 19153 10659 6140 3674 2503 7541
1995 25599 21886 19131 13898 7475 4419 2667 7294
1996 26018 21466 17293 14273 9876 5357 3133 7070
1997 24811 21747 16638 12556 9848 6786 3556 6765
1998 27655 20640 16511 11798 8431 6498 4291 6526
1999 30925 22941 15373 11480 7735 5386 3827 6368
2000 38030 26065 18175 11782 8622 5756 3907 7385
2001 33451 31660 19272 12390 7620 5408 3439 6748
2002 28981 27679 22448 12030 7083 4065 2582 4862
2003 22677 23944 19184 13417 6726 3744 2050 3753
2004 19560 18851 17002 11567 7212 3275 1687 2616
2005 18988 16332 13569 10434 6301 3598 1545 2029
2006 18615 15972 12168 8742 5958 3291 1797 1785
2007 17394 15814 12626 8724 5628 3472 1804 1962
2008 16768 14765 12351 8790 5410 3104 1824 1976
2009 19955 14250 11575 8698 5756 3399 1963 2403
2010 23632 17008 11362 8431 5916 3693 2095 2694
2011 22412 20189 13767 8515 6005 3995 2372 3075
2012 21828 19177 16438 10367 6107 4130 2623 3577
2013 18845 18680 15548 11973 7024 3989 2586 3885
2014 15724 16129 15147 11306 7825 4324 2337 3792
2015 17989 13463 13101 10988 7335 4655 2510 3558
2016 16567 15409 10926 9429 6982 4103 2386 3110
2017 14967 14183 12291 7373 5468 3505 1861 2493
2018 13189 12817 11385 8363 4389 2885 1662 2065
2019 15992 11300 10409 7990 5094 2328 1347 1738
2020 16597 13719 9189 7285 4766 2560 1033 1369
2021 17962 14227 11120 6496 4602 2699 1408 1320
2022 18744 15391 11420 7814 4216 2842 1649 1667
Table A.32. Shetland. Catch numbers-at-age (thousands).
Year 3 4 5 6 7 8 9 10+
1986 26 85 274 463 379 244 250 308
1987 70 224 219 200 204 177 120 325
1988 127 284 306 266 186 159 125 373
1989 126 305 346 374 411 378 273 559
1990 222 209 262 334 291 253 226 574
1991 118 208 242 267 285 316 200 609
1992 543 479 382 297 189 221 176 660
1993 113 1175 882 338 160 138 150 485
1994 112 868 1736 441 176 105 83 376
1995 108 843 1638 1221 279 133 101 309
1996 3 348 1120 1146 698 222 115 297
1997 67 804 1522 1213 911 574 192 304
1998 26 246 668 1076 1087 909 635 619
1999 39 181 426 901 927 677 426 496
2000 82 190 217 272 345 348 176 219
2001 24 723 540 260 271 344 179 480
2002 9 248 1089 665 304 289 211 461
2003 46 566 973 969 484 278 173 620
2004 149 772 1358 1069 708 305 138 369
2005 408 651 783 854 566 330 167 216
2006 335 904 667 659 568 395 192 495
2007 78 872 1078 579 438 331 169 207
2008 72 535 1269 808 648 519 334 430
2009 131 508 859 986 602 500 402 462
2010 144 793 1167 1098 927 629 318 338
2011 31 391 575 927 919 764 475 534
2012 155 485 781 856 977 1232 792 553
2013 41 744 1063 994 1109 1271 986 1066
2014 20 193 922 970 890 851 661 695
2015 64 323 724 1421 1108 815 686 918
2016 13 421 1065 758 1110 920 711 1120
2017 400 483 1506 872 530 852 599 837
2018 48 1335 865 1118 737 772 787 1025
2019 215 509 1477 773 776 644 549 664
2020 597 1725 972 1002 599 623 312 355
2021 124 1304 1594 926 1045 775 598 510
2022 433 1148 1851 1543 905 741 535 452
Table A.33. Shetland. Catch mean weights-at-age (kg).
Year 3 4 5 6 7 8 9 10+
1986 0.139 0.145 0.152 0.160 0.166 0.188 0.235 0.223
1987 0.140 0.160 0.177 0.191 0.199 0.210 0.222 0.259
1988 0.143 0.163 0.179 0.193 0.204 0.209 0.217 0.244
1989 0.136 0.149 0.163 0.177 0.190 0.204 0.217 0.242
1990 0.134 0.149 0.162 0.173 0.189 0.203 0.218 0.226
1991 0.133 0.147 0.166 0.174 0.188 0.198 0.207 0.221
1992 0.129 0.149 0.161 0.180 0.194 0.202 0.209 0.223
1993 0.126 0.139 0.154 0.177 0.191 0.201 0.211 0.235
1994 0.123 0.137 0.151 0.176 0.199 0.203 0.215 0.232
1995 0.119 0.139 0.159 0.163 0.194 0.213 0.215 0.229
1996 0.117 0.130 0.145 0.167 0.191 0.212 0.214 0.234
1997 0.127 0.134 0.149 0.165 0.182 0.197 0.212 0.228
1998 0.125 0.138 0.146 0.162 0.174 0.186 0.199 0.215
1999 0.127 0.140 0.150 0.167 0.183 0.198 0.212 0.234
2000 0.140 0.145 0.154 0.164 0.180 0.197 0.216 0.229
2001 0.126 0.138 0.158 0.170 0.187 0.193 0.203 0.229
2002 0.126 0.140 0.153 0.169 0.186 0.196 0.202 0.221
2003 0.130 0.144 0.167 0.182 0.195 0.203 0.212 0.243
2004 0.132 0.147 0.168 0.189 0.203 0.211 0.222 0.251
2005 0.139 0.154 0.166 0.184 0.200 0.211 0.232 0.256
2006 0.136 0.157 0.169 0.182 0.195 0.211 0.218 0.239
2007 0.130 0.149 0.175 0.190 0.207 0.222 0.242 0.261
2008 0.142 0.151 0.167 0.187 0.202 0.215 0.229 0.248
2009 0.146 0.164 0.184 0.197 0.214 0.232 0.242 0.255
2010 0.146 0.159 0.178 0.196 0.214 0.227 0.237 0.251
2011 0.132 0.149 0.165 0.181 0.199 0.215 0.229 0.244
2012 0.139 0.155 0.168 0.179 0.196 0.214 0.226 0.246
2013 0.131 0.143 0.162 0.179 0.197 0.209 0.219 0.239
2014 0.135 0.152 0.163 0.175 0.192 0.209 0.226 0.250
2015 0.137 0.147 0.168 0.176 0.192 0.203 0.217 0.230
2016 0.138 0.155 0.155 0.172 0.189 0.201 0.218 0.235
2017 0.149 0.160 0.170 0.181 0.196 0.205 0.215 0.238
2018 0.142 0.155 0.166 0.184 0.199 0.211 0.225 0.247
2019 0.149 0.157 0.179 0.192 0.199 0.210 0.223 0.245
2020 0.145 0.156 0.177 0.199 0.207 0.221 0.233 0.254
2021 0.134 0.150 0.170 0.185 0.203 0.215 0.228 0.251
2022 0.143 0.159 0.174 0.192 0.207 0.220 0.235 0.264
Table A.34. Summary of Marine Directorate Shetland scallop dredge surveys.
Vessel Cruise start date Cruise end date No. of dredges Dredge width (m) WK hauls NW hauls
R.V. Clupea 28-Jan-98 11-Feb-98 3 4.5 90 5511
R.V. Clupea 10-Mar-99 23-Mar-99 3 4.5 80 4893
R.V. Clupea 02-Mar-00 13-Mar-00 3 4.5 41 2855
R.V. Clupea 14-Feb-01 27-Feb-01 3 4.5 86 5601
R.V. Clupea 04-Dec-01 17-Dec-01 3 4.5 91 5402
R.V. Clupea 04-Mar-03 17-Mar-03 3 4.5 91 5339
R.V. Clupea 27-Jan-04 09-Feb-04 3 4.5 50 2447
R.V. Clupea 15-Feb-05 01-Mar-05 3 4.5 93 5667
R.V. Clupea 09-Mar-06 27-Mar-06 3 4.5 89 5630
R.V. Clupea 15-Mar-07 31-Mar-07 3 4.5 82 5542
R.V. Clupea 24-Jan-08 06-Feb-08 3 4.5 49 3219
R.V. Alba na Mara 17-Feb-09 03-Mar-09 6 9 48 6221
R.V. Alba na Mara 15-Mar-10 29-Mar-10 6 9 85 12847
R.V. Alba na Mara 31-Jan-11 14-Feb-11 6 9 65 10612
R.V. Alba na Mara 23-Jan-12 06-Feb-12 6 9 64 6200
R.V. Alba na Mara 08-Jan-13 19-Jan-13 6 9 64 6699
R.V. Alba na Mara 26-Jan-16 08-Feb-16 6 9 19 2260
R.V. Alba na Mara 24-Jan-17 29-Jan-17 6 9 27 5033
R.V. Alba na Mara 26-Jan-18 04-Feb-18 6 9 37 6917
R.V. Alba na Mara 25-Jan-19 02-Feb-19 6 9 60 11866
R.V. Alba na Mara 26-Jan-20 05-Feb-20 6 9 51 14744
R.V. Alba na Mara 28-Jan-21 07-Feb-21 6 9 36 7441
R.V. Alba na Mara 30-Jan-22 10-Feb-22 6 9 40 8096

Clupea

Table A.35.Shetland. Research-vessel survey data. Catch rates (numbers hour-1metre-1) by age class and year.
Year 3 4 5 6 7 8 9 10+
1998 0.531 1.927 2.410 5.709 5.097 5.192 3.074 2.228
1999 1.202 1.099 2.208 3.282 6.404 5.480 3.416 2.585
2000 2.643 5.000 1.975 3.227 5.616 6.062 3.832 1.921
2001 1.066 8.413 3.953 1.890 2.892 3.249 2.728 3.552
2002 2.534 6.798 3.731 1.931 3.142 3.128 2.179 1.744
2003 0.611 4.298 5.423 4.914 2.422 2.273 2.539 2.427
2004 0.556 1.876 5.118 4.854 3.315 2.031 1.020 3.506
2005 3.931 3.128 4.381 4.372 3.764 2.316 1.532 2.826
2006 2.026 3.602 4.188 3.927 3.592 3.222 2.887 4.698
2007 1.489 5.316 4.710 3.892 3.312 3.216 3.158 4.338
2008 0.726 2.168 7.764 6.349 2.104 2.694 2.812 4.535

Alba

Year 3 4 5 6 7 8 9 10+
2009 1.174 2.436 5.328 4.927 3.805 2.846 1.006 7.400
2010 1.849 3.540 5.499 5.399 4.102 2.453 0.860 8.216
2011 1.125 3.431 5.086 4.379 5.102 3.908 1.734 8.719
2012 0.851 2.611 4.222 3.038 3.353 2.335 1.328 4.165
2013 0.708 3.853 3.605 3.371 3.336 2.762 1.714 4.395
2014 NA NA NA NA NA NA NA NA
2015 NA NA NA NA NA NA NA NA
2016 0.276 2.391 2.471 3.287 3.667 2.931 1.655 9.299
2017 3.141 6.519 7.314 5.994 5.141 3.198 2.558 7.405
2018 1.937 11.215 7.611 7.767 6.228 3.799 2.092 5.972
2019 3.910 7.225 8.228 8.056 4.942 2.921 2.009 5.744
2020 7.645 14.342 8.870 11.117 7.962 4.446 2.495 5.485
2021 5.836 7.670 7.738 6.753 5.035 4.167 3.299 5.060
2022 3.530 9.731 9.598 8.288 5.296 3.220 1.565 3.525

Table A.36. Shetland. SAM assessment configuration file.

# Configuration saved:

#

# Where a matrix is specified rows corresponds to fleets and columns to ages.

# Same number indicates same parameter used

# Numbers (integers) starts from zero and must be consecutive

#

$minAge

# The minimium age class in the assessment

3

$maxAge

# The maximum age class in the assessment

10

$maxAgePlusGroup

# Is last age group considered a plus group (1 yes, or 0 no).

1 0 0

$keyLogFsta

# Coupling of the fishing mortality states (nomally only first row is used).

0 1 2 3 4 5 6 6

-1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1

$corFlag

# Correlation of fishing mortality across ages (0 independent, 1 compound symmetry, or 2 AR(1)

2

$keyLogFpar

# Coupling of the survey catchability parameters (nomally first row is not used, as that is covered by fishing mortality).

-1 -1 -1 -1 -1 -1 -1 -1

0 1 2 3 4 5 5 -1

6 7 8 9 10 10 10 -1

$keyQpow

# Density dependent catchability power parameters (if any).

-1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1

$keyVarF

# Coupling of process variance parameters for log(F)-process (nomally only first row is used)

0 1 1 1 1 1 1 1

-1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1

$keyVarLogN

# Coupling of process variance parameters for log(N)-process

0 1 1 1 1 1 1 1

$keyVarObs

# Coupling of the variance parameters for the observations.

0 1 2 2 2 2 2 2

3 4 5 5 5 5 5 -1

6 6 6 6 7 7 7 -1

$obsCorStruct

# Covariance structure for each fleet ("ID" independent, "AR" AR(1), or "US" for unstructured). | Possible values are: "ID" "AR" "US"

"ID" "ID" "AR"

$keyCorObs

# Coupling of correlation parameters can only be specified if the AR(1) structure is chosen above.

# NA's indicate where correlation parameters can be specified (-1 where they cannot).

# 3-4 4-5 5-6 6-7 7-8 8-9 9-10

NA NA NA NA NA NA NA

NA NA NA NA NA NA -1

# NA NA NA NA NA NA -1

0 1 1 1 1 1 -1

$stockRecruitmentModelCode

# Stock recruitment code (0 for plain random walk, 1 for Ricker, and 2 for Beverton-Holt).

0

$noScaledYears

# Number of years where catch scaling is applied.

0

$keyScaledYears

# A vector of the years where catch scaling is applied.

$keyParScaledYA

# A matrix specifying the couplings of scale parameters (nrow = no scaled years, ncols = no ages).

$fbarRange

# lowest and higest age included in Fbar

4 8

$keyBiomassTreat

# To be defined only if a biomass survey is used (0 SSB index, 1 catch index, and 2 FSB index).

-1 -1 -1

$obsLikelihoodFlag

# Option for observational likelihood | Possible values are: "LN" "ALN"

"LN" "LN" "LN"

$fixVarToWeight

# If weight attribute is supplied for observations this option sets the treatment (0 relative weight, 1 fix variance to weight).

0

Table A.37. Shetland. SAM assessment stock summary. Recruitment is in thousands and SSB in tonnes. ‘Low’ and ‘High’ refer to lower and upper 95% confidence intervals.
Year R(age 3) Low High SSB Low High Fbar(4-8) Low High
1986 4660 3979 5457 3858 3541 4204 0.125 0.105 0.149
1987 4059 3504 4702 4139 3808 4500 0.091 0.076 0.109
1988 2959 2557 3424 3927 3623 4256 0.103 0.085 0.125
1989 2811 2428 3254 3485 3216 3776 0.17 0.144 0.199
1990 3481 3024 4006 3116 2877 3375 0.171 0.146 0.201
1991 5715 4991 6544 3163 2930 3415 0.193 0.165 0.225
1992 12218 10735 13905 4096 3809 4404 0.214 0.183 0.25
1993 12497 11026 14164 4882 4555 5233 0.22 0.19 0.255
1994 11363 10035 12867 5401 5068 5757 0.194 0.168 0.223
1995 9937 8789 11236 5714 5380 6068 0.20 0.173 0.231
1996 6827 6054 7700 5364 5062 5684 0.19 0.166 0.217
1997 4472 3955 5056 4937 4657 5234 0.236 0.207 0.27
1998 3624 3218 4080 4101 3864 4353 0.285 0.249 0.327
1999 5434 4848 6090 3736 3519 3966 0.268 0.235 0.305
2000 7575 6782 8461 3836 3605 4083 0.154 0.13 0.182
2001 8157 7302 9111 4125 3882 4382 0.182 0.159 0.208
2002 8621 7731 9613 4473 4213 4748 0.239 0.209 0.272
2003 7550 6762 8431 4795 4522 5085 0.286 0.253 0.323
2004 7966 7141 8887 4880 4603 5174 0.302 0.266 0.342
2005 10725 9648 11923 5268 4967 5587 0.235 0.206 0.268
2006 13819 12426 15369 6122 5772 6493 0.226 0.2 0.255
2007 14414 12936 16060 7021 6617 7450 0.174 0.154 0.196
2008 13495 12091 15062 7878 7423 8360 0.205 0.181 0.232
2009 11972 10714 13378 8704 8203 9236 0.177 0.154 0.205
2010 11896 10626 13317 8850 8351 9378 0.17 0.148 0.195
2011 12275 10954 13755 8449 7975 8951 0.151 0.132 0.174
2012 12015 10640 13568 8771 8261 9312 0.174 0.151 0.199
2013 9237 8037 10617 8063 7558 8603 0.217 0.19 0.247
2014 9516 8099 11181 7603 7029 8223 0.181 0.157 0.208
2015 11633 9481 14273 7556 6805 8389 0.21 0.182 0.242
2016 11451 8745 14996 7418 6400 8598 0.227 0.193 0.267
2017 15129 10588 21616 8199 6591 10199 0.214 0.175 0.26
2018 15454 9941 24023 8607 6418 11543 0.23 0.178 0.297
2019 24364 14275 41585 10645 7140 15871 0.20 0.141 0.284
2020 30401 16440 56216 13239 8097 21644 0.148 0.095 0.232
2021 36851 18682 72692 15934 9097 27911 0.158 0.091 0.275
2022 37997 17664 81737 19822 10641 36925 0.136 0.07 0.262
Table A.38. Shetland. SAM estimated model parameters.
Parameter name par sd(par) exp(par) Low High
logFpar_0 -8.89885 0.22820 0.00014 0.00009 0.00022
logFpar_1 -7.54615 0.17279 0.00053 0.00037 0.00075
logFpar_2 -7.08888 0.07821 0.00083 0.00071 0.00098
logFpar_3 -6.72786 0.07903 0.00120 0.00102 0.00140
logFpar_4 -6.36285 0.08050 0.00172 0.00147 0.00203
logFpar_5 -5.93406 0.06641 0.00265 0.00232 0.00302
logFpar_6 -9.10684 0.20188 0.00011 0.00007 0.00017
logFpar_7 -7.82746 0.18494 0.00040 0.00028 0.00058
logFpar_8 -7.39381 0.17422 0.00062 0.00043 0.00087
logFpar_9 -7.06383 0.16692 0.00086 0.00061 0.00119
logFpar_10 -6.83275 0.15089 0.00108 0.00080 0.00146
logSdLogFsta_0 -1.64352 0.96021 0.19330 0.02833 1.31904
logSdLogFsta_1 -1.43868 0.12835 0.23724 0.18353 0.30667
logSdLogN_0 -1.30992 0.12815 0.26984 0.20883 0.34867
logSdLogObs_0 2.16772 0.12923 8.73835 6.74812 11.31555
logSdLogObs_1 1.16808 0.13887 3.21582 2.43598 4.24533
logSdLogObs_2 0.21983 0.09286 1.24587 1.03470 1.50013
logSdLogObs_3 -0.28272 0.21439 0.75373 0.49091 1.15726
logSdLogObs_4 -0.56388 0.21530 0.56900 0.36991 0.87523
logSdLogObs_5 -1.38733 0.10476 0.24974 0.20253 0.30795
logSdLogObs_6 -0.70180 0.17767 0.49569 0.34745 0.70719
logSdLogObs_7 -0.79696 0.19916 0.45070 0.30262 0.67124
transfIRARdist_0 -0.19301 0.62573 0.82448 0.23587 2.88193
transfIRARdist_1 -1.73361 0.43893 0.17665 0.07343 0.42497
itrans_rho_0 1.54831 0.22635 4.70354 2.99102 7.39657
Table A.39. Shetland. SAM assessment results: stock numbers-at-age (in thousands).
Year 3 4 5 6 7 8 9 10+
1986 4660 4018 3447 3189 2363 1596 1767 2181
1987 4059 3978 3282 2691 2384 1733 1155 2876
1988 2959 3468 3275 2617 2096 1838 1319 3069
1989 2811 2525 2828 2569 2010 1602 1386 3311
1990 3481 2390 1995 2094 1835 1416 1100 3248
1991 5715 2960 1886 1467 1490 1297 973 2994
1992 12218 4858 2320 1358 1015 1029 866 2655
1993 12497 10381 3757 1610 911 691 681 2318
1994 11363 10612 7974 2531 1066 623 463 1992
1995 9937 9665 8276 5508 1723 749 433 1690
1996 6827 8460 7581 5744 3710 1192 513 1434
1997 4472 5822 6745 5434 3933 2554 808 1303
1998 3624 3808 4578 4684 3546 2538 1611 1329
1999 5434 3086 3002 3195 2958 2102 1399 1605
2000 7575 4633 2451 2134 2057 1778 1190 1742
2001 8157 6476 3783 1871 1555 1452 1212 2055
2002 8621 6965 5216 2793 1321 1067 957 2231
2003 7550 7350 5510 3653 1830 845 659 2066
2004 7966 6428 5730 3746 2264 1095 486 1650
2005 10725 6772 4934 3795 2273 1325 634 1310
2006 13819 9134 5316 3481 2509 1450 824 1262
2007 14414 11780 7234 3840 2371 1620 881 1276
2008 13495 12305 9466 5372 2762 1647 1077 1448
2009 11972 11522 9914 7021 3799 1839 993 1488
2010 11896 10232 9404 7583 5133 2625 1136 1445
2011 12275 10166 8341 7187 5557 3584 1665 1554
2012 12015 10504 8378 6518 5388 3960 2310 1923
2013 9237 10279 8621 6456 4794 3734 2436 2396
2014 9516 7894 8354 6467 4556 3141 2120 2449
2015 11633 8139 6473 6366 4679 3117 1945 2603
2016 11451 9944 6620 4818 4437 3088 1854 2450
2017 15129 9783 8029 4830 3329 2882 1773 2159
2018 15454 12917 7874 5846 3374 2235 1701 2015
2019 24364 13191 10377 5772 4066 2211 1249 1701
2020 30401 20811 10663 7732 4146 2762 1307 1469
2021 36851 25987 17013 8219 5785 2994 1828 1661
2022 37997 31504 21235 13085 6116 4102 1933 2015
Table A.40. Shetland. SAM assessment results: fishing mortality-at-age.
Year 3 4 5 6 7 8 9 10+
1986 0.008 0.053 0.098 0.141 0.160 0.173 0.167 0.167
1987 0.007 0.044 0.077 0.100 0.110 0.123 0.123 0.123
1988 0.009 0.054 0.093 0.114 0.120 0.132 0.132 0.132
1989 0.012 0.085 0.150 0.187 0.200 0.226 0.219 0.219
1990 0.012 0.087 0.157 0.191 0.197 0.225 0.223 0.223
1991 0.012 0.094 0.178 0.218 0.220 0.253 0.252 0.252
1992 0.013 0.107 0.215 0.249 0.235 0.262 0.268 0.268
1993 0.014 0.114 0.245 0.263 0.231 0.249 0.259 0.259
1994 0.012 0.099 0.220 0.234 0.203 0.212 0.224 0.224
1995 0.011 0.093 0.215 0.245 0.218 0.228 0.242 0.242
1996 0.009 0.077 0.183 0.229 0.223 0.239 0.252 0.252
1997 0.011 0.091 0.215 0.277 0.288 0.311 0.313 0.313
1998 0.010 0.088 0.210 0.310 0.373 0.446 0.455 0.455
1999 0.009 0.080 0.191 0.291 0.358 0.419 0.395 0.395
2000 0.007 0.053 0.120 0.167 0.199 0.233 0.205 0.205
2001 0.008 0.066 0.153 0.199 0.226 0.266 0.231 0.231
2002 0.010 0.085 0.206 0.273 0.297 0.333 0.284 0.284
2003 0.011 0.099 0.236 0.328 0.363 0.404 0.351 0.351
2004 0.012 0.115 0.262 0.350 0.385 0.397 0.338 0.338
2005 0.011 0.092 0.199 0.263 0.299 0.324 0.283 0.283
2006 0.010 0.083 0.176 0.234 0.287 0.349 0.341 0.341
2007 0.008 0.069 0.147 0.180 0.214 0.258 0.248 0.248
2008 0.008 0.067 0.149 0.196 0.257 0.357 0.379 0.379
2009 0.007 0.054 0.118 0.163 0.220 0.332 0.391 0.391
2010 0.007 0.054 0.119 0.161 0.209 0.305 0.357 0.357
2011 0.006 0.043 0.097 0.138 0.189 0.290 0.365 0.365
2012 0.006 0.048 0.110 0.157 0.217 0.336 0.419 0.419
2013 0.007 0.057 0.138 0.198 0.273 0.416 0.529 0.529
2014 0.006 0.048 0.122 0.174 0.229 0.329 0.413 0.413
2015 0.007 0.057 0.146 0.210 0.266 0.369 0.469 0.469
2016 0.008 0.064 0.165 0.220 0.281 0.405 0.540 0.540
2017 0.008 0.067 0.167 0.208 0.249 0.377 0.518 0.518
2018 0.008 0.068 0.161 0.213 0.272 0.433 0.631 0.631
2019 0.008 0.063 0.144 0.182 0.236 0.376 0.547 0.547
2020 0.007 0.051 0.111 0.139 0.176 0.263 0.363 0.363
2021 0.007 0.052 0.113 0.146 0.194 0.288 0.398 0.398
2022 0.006 0.046 0.100 0.128 0.166 0.237 0.325 0.325
Table A.41. West of Kintyre. Catch numbers-at-age (in thousands).
Year 3 4 5 6 7 8 9 10+
1982 1184 1050 746 878 1011 928 869 1914
1983 905 1287 1026 815 1030 1104 909 1339
1984 877 1274 1537 1307 1298 1072 580 1521
1985 465 641 652 580 600 614 517 1227
1986 381 527 567 584 434 409 429 1099
1987 982 893 877 781 488 377 299 958
1988 378 416 430 309 336 324 293 769
1989 787 595 578 378 132 209 138 371
1990 1350 618 548 409 328 285 120 299
1991 614 1021 406 350 319 267 163 562
1992 483 1429 1142 515 307 302 240 695
1993 1408 1947 1217 775 373 255 180 407
1994 363 1508 1768 1111 609 361 172 1023
1995 823 1439 1298 785 449 185 82 407
1996 1287 2288 1564 1098 628 356 187 456
1997 1678 2531 1485 1298 838 433 303 451
1998 560 2260 2043 1806 1440 793 340 625
1999 932 2036 1712 868 660 498 250 578
2000 837 1946 1905 1433 1215 803 518 738
2001 35 1125 1636 1060 767 614 485 845
2002 208 1419 2785 1892 1293 888 652 681
2003 875 3512 1772 1568 930 730 484 725
2004 862 1852 2793 1073 905 544 214 616
2005 826 1884 1772 1296 706 440 198 394
2006 39 2448 1957 1205 727 448 244 129
2007 390 1490 1497 1142 1064 671 273 263
2008 561 1468 2366 2354 1455 868 444 241
2009 820 2185 1918 2122 1382 779 356 619
2010 1293 2708 2680 1687 988 670 321 736
2011 20 1020 2358 2124 1615 1353 633 1152
2012 96 1476 3611 4628 3723 1973 1105 1200
2013 100 1052 1965 2257 2109 1366 761 1202
2014 590 1845 2626 3066 2834 1977 1244 1107
2015 358 971 2010 2213 1883 1317 865 673
2016 280 1931 1954 1771 1575 1073 879 838
2017 93 765 1929 1365 896 643 325 439
2018 2 186 854 1187 836 572 299 388
2019 1 241 768 1366 1114 768 462 463
2020 65 569 911 600 555 208 85 80
2021 227 838 670 709 412 306 136 140
2022 182 1711 999 270 286 190 94 75
Table A.42. West of Kintyre. Mean weights-at-age in the catch (kg)
Year 3 4 5 6 7 8 9 10+
1982 0.127 0.138 0.163 0.189 0.198 0.214 0.222 0.249
1983 0.121 0.141 0.148 0.155 0.165 0.182 0.203 0.238
1984 0.124 0.160 0.185 0.198 0.206 0.212 0.225 0.248
1985 0.131 0.161 0.183 0.192 0.197 0.207 0.213 0.230
1986 0.119 0.143 0.170 0.189 0.200 0.199 0.209 0.228
1987 0.127 0.151 0.175 0.193 0.207 0.217 0.223 0.240
1988 0.124 0.136 0.163 0.177 0.191 0.205 0.210 0.231
1989 0.136 0.151 0.170 0.186 0.206 0.203 0.212 0.239
1990 0.132 0.161 0.183 0.200 0.209 0.214 0.228 0.260
1991 0.139 0.165 0.184 0.198 0.208 0.222 0.227 0.255
1992 0.128 0.137 0.165 0.188 0.203 0.214 0.221 0.242
1993 0.125 0.154 0.180 0.201 0.220 0.229 0.229 0.246
1994 0.137 0.147 0.162 0.183 0.214 0.231 0.234 0.270
1995 0.140 0.160 0.183 0.201 0.218 0.232 0.244 0.244
1996 0.132 0.151 0.171 0.193 0.210 0.227 0.234 0.247
1997 0.138 0.159 0.180 0.198 0.212 0.222 0.233 0.220
1998 0.132 0.152 0.170 0.186 0.205 0.217 0.228 0.237
1999 0.143 0.151 0.174 0.195 0.210 0.220 0.228 0.236
2000 0.134 0.157 0.169 0.187 0.199 0.213 0.228 0.248
2001 0.128 0.152 0.172 0.191 0.207 0.213 0.216 0.232
2002 0.146 0.148 0.164 0.187 0.201 0.210 0.214 0.236
2003 0.138 0.145 0.160 0.187 0.203 0.219 0.227 0.248
2004 0.147 0.151 0.165 0.187 0.207 0.226 0.233 0.244
2005 0.142 0.162 0.177 0.191 0.214 0.244 0.253 0.280
2006 0.118 0.141 0.161 0.197 0.220 0.244 0.276 0.274
2007 0.136 0.158 0.182 0.196 0.199 0.221 0.258 0.263
2008 0.128 0.152 0.171 0.193 0.211 0.234 0.266 0.291
2009 0.132 0.141 0.152 0.164 0.186 0.202 0.213 0.246
2010 0.138 0.148 0.157 0.175 0.190 0.200 0.215 0.242
2011 0.130 0.133 0.148 0.164 0.180 0.193 0.196 0.210
2012 0.128 0.132 0.147 0.163 0.181 0.193 0.205 0.237
2013 0.130 0.145 0.162 0.179 0.200 0.222 0.247 0.265
2014 0.134 0.139 0.155 0.175 0.193 0.211 0.231 0.259
2015 0.120 0.137 0.152 0.169 0.184 0.203 0.221 0.249
2016 0.134 0.142 0.160 0.177 0.195 0.211 0.223 0.245
2017 0.140 0.151 0.168 0.183 0.196 0.211 0.221 0.243
2018 0.135 0.144 0.164 0.182 0.213 0.226 0.238 0.254
2019 0.140 0.152 0.152 0.163 0.179 0.200 0.213 0.246
2020 0.148 0.160 0.179 0.202 0.226 0.258 0.276 0.292
2021 0.150 0.171 0.187 0.210 0.227 0.240 0.248 0.271
2022 0.147 0.172 0.200 0.234 0.251 0.254 0.266 0.276

Aora I

Table A.43. West of Kintyre. Research-vessel survey data. Catch rates (numbers hour-1metre-1) by age class and year.
Year 3 4 5 6 7 8 9 10+
1993 10.654 10.012 5.947 4.408 1.853 1.240 1.121 3.482
1994 4.297 13.524 9.841 4.725 3.702 1.228 0.781 2.214
1995 10.123 11.616 8.879 4.344 2.143 1.186 0.536 1.703
1996 4.136 9.105 7.153 5.485 2.787 1.367 0.958 2.112
1997 5.693 12.584 9.588 5.805 3.708 1.779 0.918 1.704
1998 7.880 11.707 9.981 5.947 4.371 2.139 1.201 1.651
1999 4.587 6.804 7.135 5.374 4.265 3.263 1.824 1.958
2000 6.632 13.231 8.581 5.817 4.155 2.828 1.486 1.454
2001 2.188 10.229 8.278 4.241 2.646 2.019 1.221 1.883
2002 9.905 5.126 10.234 7.602 3.446 2.424 1.229 4.312

Aora II

Year 3 4 5 6 7 8 9 10+
2003 5.605 13.007 4.898 6.122 3.057 1.932 1.605 2.249
2004 5.279 6.348 9.705 3.563 3.844 2.119 1.622 2.438
2005 9.745 10.004 6.772 6.167 3.338 2.273 1.477 2.129
2006 4.387 9.803 12.547 8.684 4.902 3.833 2.380 2.350
2007 2.186 8.018 8.446 7.754 4.986 3.471 2.724 3.723

Alba na Mara

Year 3 4 5 6 7 8 9 10+
2008 2.122 5.667 7.072 5.686 3.923 2.018 1.452 2.056
2009 4.600 14.074 8.965 4.996 3.299 2.319 0.735 4.619
2010 9.710 14.227 8.260 3.733 2.174 0.983 0.248 4.021
2011 1.457 8.517 13.542 7.415 5.043 2.055 1.438 4.305
2012 3.423 10.000 11.218 6.747 4.072 2.385 1.347 2.974
2013 3.814 11.306 10.080 6.266 4.066 2.062 1.214 2.635
2014 2.111 8.603 11.194 7.351 4.643 2.809 1.252 3.173
2015 3.256 9.767 9.419 9.819 7.649 3.786 1.770 4.509
2016 1.942 15.599 8.142 5.877 5.450 3.159 1.773 5.786
2017 1.362 8.279 7.026 4.477 3.148 1.634 0.773 2.527
2018 1.420 6.457 6.148 6.235 3.272 2.099 1.123 3.000
2019 1.511 10.144 5.899 6.715 5.540 2.950 1.463 3.357
2020 NA NA NA NA NA NA NA NA
2021 NA NA NA NA NA NA NA NA
2022 2.188 6.667 4.090 3.661 2.843 2.127 0.818 3.476

Table A.44. West of Kintyre. SAM assessment configuration file.

# Configuration saved: Wed Jan 10 20:50:21 2024

#

# Where a matrix is specified rows corresponds to fleets and columns to ages.

# Same number indicates same parameter used

# Numbers (integers) starts from zero and must be consecutive

# Negative numbers indicate that the parameter is not included in the model

#

$minAge

# The minimium age class in the assessment

3

$maxAge

# The maximum age class in the assessment

10

$maxAgePlusGroup

# Is last age group considered a plus group for each fleet (1 yes, or 0 no).

1 0 0 0

$keyLogFsta

# Coupling of the fishing mortality states processes for each age (normally only

# the first row (= fleet) is used).

0 1 2 3 4 5 6 6

-1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1

$corFlag

# Correlation of fishing mortality across ages (0 independent, 1 compound symmetry,

# 2 AR(1), 3 separable AR(1

2

$keyLogFpar

# Coupling of the survey catchability parameters (nomally first row is

# not used, as that is covered by fishing mortality).

-1 -1 -1 -1 -1 -1 -1 -1

0 1 2 3 4 5 5 -1

6 7 8 9 10 11 11 -1

12 13 14 15 16 17 17 -1

$keyQpow

# Density dependent catchability power parameters (if any).

-1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1

$keyVarF

# Coupling of process variance parameters for log(F)-process (Fishing mortality

# normally applies to the first (fishing) fleet; therefore only first row is used)

0 0 0 0 0 0 0 0

-1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1

-1 -1 -1 -1 -1 -1 -1 -1

$keyVarLogN

# Coupling of the recruitment and survival process variance parameters for the

# log(N)-process at the different ages. It is advisable to have at least the first age

# class (recruitment) separate, because recruitment is a different process than

# survival.

0 1 1 1 1 1 1 1

$keyVarObs

# Coupling of the variance parameters for the observations.

# First row refers to the coupling of the variance parameters for the catch data

# observations by age

# Second and further rows refers to coupling of the variance parameters for the

# index data observations by age

0 1 1 1 1 1 1 2

3 4 4 4 4 4 5 -1

6 7 7 7 7 7 8 -1

9 10 10 10 10 10 11 -1

$obsCorStruct

# Covariance structure for each fleet ("ID" independent, "AR" AR(1), or "US" for unstructured). | Possible values are: "ID" "AR" "US"

"ID" "ID" "ID" "ID"

$keyCorObs

# Coupling of correlation parameters can only be specified if the AR(1) structure is chosen above.

# NA's indicate where correlation parameters can be specified (-1 where they cannot).

#3-4 4-5 5-6 6-7 7-8 8-9 9-10

NA NA NA NA NA NA NA

NA NA NA NA NA NA -1

NA NA NA NA NA NA -1

NA NA NA NA NA NA -1

$stockRecruitmentModelCode

# Stock recruitment code (0 for plain random walk, 1 for Ricker, 2 for Beverton-Holt).

0

$noScaledYears

# Number of years where catch scaling is applied.

0

$keyScaledYears

# A vector of the years where catch scaling is applied.

$keyParScaledYA

# A matrix specifying the couplings of scale parameters (nrow = no scaled years, ncols = no ages).

$fbarRange

# lowest and higest age included in Fbar

4 8

$keyBiomassTreat

# To be defined only if a biomass survey is used (0 SSB index, 1 catch index, 2 FSB index, 3 total catch, 4 total landings and 5 TSB index).

-1 -1 -1 -1

$obsLikelihoodFlag

# Option for observational likelihood | Possible values are: "LN" "ALN"

"LN" "LN" "LN" "LN"

$fixVarToWeight

# If weight attribute is supplied for observations this option sets the treatment (0 relative weight, 1 fix variance to weight).

0

Table A.45. West of Kintyre. SAM assessment stock summary. Recruitment is in thousands and SSB in tonnes. ‘Low’ and ‘High’ refer to lower and upper 95% confidence intervals.
Year R(age 3) Low High SSB Low High Fbar(4-8) Low High
1982 10596 9215 12184 9937 9004 10966 0.166 0.142 0.195
1983 9378 8118 10833 8155 7399 8988 0.212 0.182 0.248
1984 8128 6979 9466 8088 7348 8903 0.296 0.256 0.343
1985 7048 6156 8070 6524 5888 7228 0.185 0.16 0.214
1986 7406 6522 8410 5724 5145 6367 0.166 0.143 0.194
1987 6791 6031 7646 5630 5061 6263 0.217 0.183 0.256
1988 5631 5075 6248 4720 4229 5268 0.14 0.117 0.168
1989 5813 5248 6438 4805 4327 5335 0.127 0.107 0.15
1990 8986 8198 9850 5393 4905 5931 0.163 0.143 0.186
1991 10584 9678 11574 5962 5477 6491 0.161 0.144 0.18
1992 12705 11619 13892 6096 5633 6597 0.228 0.203 0.255
1993 14015 12729 15430 6945 6446 7483 0.253 0.225 0.284
1994 14949 13629 16398 7452 6915 8029 0.313 0.277 0.354
1995 15560 14189 17064 8220 7636 8849 0.186 0.163 0.212
1996 15919 14486 17494 8626 8029 9266 0.228 0.202 0.258
1997 14975 13600 16489 9126 8515 9780 0.241 0.211 0.275
1998 13772 12435 15254 8701 8112 9332 0.322 0.286 0.363
1999 14018 12672 15506 8527 7932 9166 0.217 0.19 0.249
2000 14163 12694 15802 8537 7923 9198 0.312 0.278 0.351
2001 12139 10779 13670 7895 7279 8564 0.241 0.212 0.274
2002 18438 16360 20781 8773 8058 9551 0.399 0.345 0.461
2003 16413 14507 18571 8454 7704 9277 0.39 0.33 0.459
2004 17663 15570 20038 8837 7995 9768 0.309 0.253 0.378
2005 18438 16242 20931 9761 8818 10805 0.235 0.196 0.284
2006 19056 16852 21548 9755 8814 10797 0.211 0.168 0.266
2007 19789 17477 22406 11255 10260 12345 0.2 0.166 0.24
2008 25897 22789 29429 12670 11539 13912 0.267 0.224 0.318
2009 28813 25342 32759 13009 11830 14305 0.244 0.206 0.289
2010 26465 23275 30093 14471 13111 15972 0.194 0.159 0.237
2011 22808 19865 26186 13904 12550 15404 0.21 0.173 0.256
2012 21489 18577 24858 13966 12515 15586 0.36 0.305 0.426
2013 20097 17282 23371 13855 12249 15670 0.232 0.194 0.278
2014 18558 15818 21773 13149 11479 15062 0.323 0.267 0.39
2015 21701 18192 25887 11897 10150 13945 0.241 0.191 0.304
2016 17374 14257 21174 12196 10227 14544 0.237 0.184 0.306
2017 12276 9932 15172 11545 9488 14049 0.146 0.115 0.186
2018 11714 9303 14750 11290 9162 13913 0.101 0.078 0.13
2019 10754 8288 13954 10523 8513 13008 0.123 0.095 0.159
2020 12393 9264 16578 12350 9903 15401 0.08 0.061 0.105
2021 14401 10249 20234 12892 10341 16073 0.092 0.07 0.121
2022 14705 9473 22826 13979 11052 17682 0.084 0.058 0.122
Table A.46. West of Kintyre. SAM estimated model parameters.
Parameter name par sd(par) exp(par) Low High
logFpar_0 -7.7162 0.140262 0.000446 0.000337 0.00059
logFpar_1 -6.8897 0.070099 0.001018 0.000885 0.001171
logFpar_2 -6.6653 0.0714 0.001274 0.001105 0.00147
logFpar_3 -6.66746 0.074306 0.001272 0.001096 0.001475
logFpar_4 -6.6687 0.080088 0.00127 0.001082 0.001491
logFpar_5 -6.77698 0.083952 0.00114 0.000964 0.001348
logFpar_6 -8.1201 0.237089 0.000297 0.000185 0.000478
logFpar_7 -7.20885 0.099371 0.00074 0.000607 0.000903
logFpar_8 -6.86897 0.103175 0.00104 0.000846 0.001278
logFpar_9 -6.63813 0.110642 0.001309 0.00105 0.001634
logFpar_10 -6.52736 0.123753 0.001463 0.001142 0.001874
logFpar_11 -6.19465 0.150435 0.00204 0.00151 0.002757
logFpar_12 -8.86462 0.129248 0.000141 0.000109 0.000183
logFpar_13 -7.3949 0.090725 0.000614 0.000512 0.000737
logFpar_14 -7.31242 0.091308 0.000667 0.000556 0.000801
logFpar_15 -7.31704 0.094966 0.000664 0.000549 0.000803
logFpar_16 -7.28193 0.102192 0.000688 0.000561 0.000844
logFpar_17 -7.42571 0.112457 0.000596 0.000476 0.000746
logSdLogFsta_0 -0.94918 0.105082 0.387059 0.313693 0.477584
logSdLogN_0 -1.74983 0.135463 0.173803 0.132555 0.227887
logSdLogObs_0 1.678623 0.12555 5.358173 4.168366 6.887596
logSdLogObs_1 -0.31041 0.151235 0.733145 0.541787 0.992089
logSdLogObs_2 0.45832 0.149515 1.581415 1.172679 2.132616
logSdLogObs_3 -0.82882 0.225909 0.436563 0.27786 0.685913
logSdLogObs_4 -1.57588 0.105102 0.206825 0.167615 0.255208
logSdLogObs_5 -2.08004 0.333933 0.124925 0.064062 0.243613
logSdLogObs_6 -0.647 0.320253 0.523616 0.275959 0.993531
logSdLogObs_7 -1.59301 0.164421 0.203314 0.146336 0.282476
logSdLogObs_8 -1.58156 0.550719 0.205654 0.068358 0.618709
logSdLogObs_9 -0.88402 0.199955 0.413118 0.276946 0.616244
logSdLogObs_10 -1.36233 0.097667 0.256063 0.210627 0.3113
logSdLogObs_11 -0.50771 0.206759 0.601874 0.398031 0.91011
itrans_rho_0 1.30553 0.139187 3.689645 2.793111 4.873949
Table A.47. West of Kintyre. SAM assessment results: stock numbers-at-age (in thousands).
Year 3 4 5 6 7 8 9 10+
1982 10596 9253 8178 7341 5681 4746 3457 6779
1983 9378 8433 7014 6279 5524 3996 3167 6468
1984 8128 7313 6143 5105 4558 3746 2501 5922
1985 7048 6191 5073 4013 3273 2812 2246 5212
1986 7406 5639 4728 3753 2891 2269 1866 4846
1987 6791 5973 4353 3529 2711 2075 1562 4420
1988 5631 5317 4344 2992 2383 1884 1413 4012
1989 5813 4569 4147 3308 2251 1774 1326 3755
1990 8986 4635 3419 3086 2522 1763 1337 3886
1991 10584 7149 3382 2459 2265 1880 1283 4022
1992 12705 8515 5248 2504 1792 1663 1364 3945
1993 14015 10157 5975 3527 1686 1242 1143 3747
1994 14949 11219 7053 3966 2301 1119 830 3519
1995 15560 12199 8141 4507 2407 1384 651 2853
1996 15919 12819 9139 5811 3136 1681 993 2588
1997 14975 12942 9031 6386 3969 2097 1129 2462
1998 13772 12178 8995 6278 4342 2625 1369 2334
1999 14018 11204 8282 5793 3858 2555 1565 2304
2000 14163 11551 7934 5649 4057 2659 1746 2681
2001 12139 11719 8152 5035 3548 2441 1556 2592
2002 18438 10212 8968 5575 3356 2314 1517 2417
2003 16413 15393 7324 5391 3069 1774 1183 1959
2004 17663 13572 10465 4531 3183 1685 877 1585
2005 18438 14731 9731 6745 2913 1909 952 1472
2006 19056 15464 10919 6716 4588 1908 1220 1595
2007 19789 16023 11535 7658 4666 3094 1277 1942
2008 25897 16739 12436 8438 5373 3101 2033 2205
2009 28813 21909 12888 8678 5310 3233 1894 2839
2010 26465 24404 16931 9198 5630 3302 2028 3202
2011 22808 22472 19141 12393 6395 3813 2188 3588
2012 21489 19460 18158 14337 8611 4152 2306 3497
2013 20097 18288 15307 12527 8466 4458 1955 2651
2014 18558 17151 14720 11385 8585 5302 2568 2373
2015 21701 15761 13183 10129 7023 4817 2725 2189
2016 17374 18523 12528 9498 6708 4343 2901 2768
2017 12276 14812 14420 8835 6350 4266 2680 3398
2018 11714 10506 12052 10746 6369 4583 3075 4487
2019 10754 10063 8832 9600 8175 4767 3428 5814
2020 12393 9231 8396 6889 7092 5945 3475 7043
2021 14401 10623 7521 6502 5340 5624 4850 8777
2022 14705 12322 8422 5722 5003 4216 4573 11396
Table A.48. West of Kintyre. SAM assessment results: fishing mortality-at-age.
Year 3 4 5 6 7 8 9 10+
1982 0.079 0.127 0.115 0.134 0.202 0.255 0.309 0.309
1983 0.099 0.167 0.168 0.171 0.238 0.318 0.337 0.337
1984 0.122 0.216 0.275 0.294 0.333 0.361 0.330 0.330
1985 0.073 0.120 0.152 0.178 0.216 0.261 0.281 0.281
1986 0.065 0.109 0.143 0.175 0.182 0.223 0.268 0.268
1987 0.095 0.169 0.225 0.242 0.214 0.234 0.249 0.249
1988 0.059 0.099 0.123 0.134 0.145 0.201 0.218 0.218
1989 0.076 0.139 0.146 0.121 0.095 0.133 0.118 0.118
1990 0.079 0.165 0.179 0.160 0.144 0.168 0.112 0.112
1991 0.067 0.159 0.151 0.165 0.159 0.171 0.146 0.146
1992 0.074 0.204 0.247 0.246 0.216 0.225 0.198 0.198
1993 0.072 0.214 0.260 0.277 0.260 0.253 0.179 0.179
1994 0.054 0.171 0.297 0.349 0.358 0.391 0.271 0.271
1995 0.044 0.139 0.187 0.212 0.209 0.182 0.153 0.153
1996 0.057 0.200 0.209 0.231 0.252 0.248 0.224 0.224
1997 0.057 0.214 0.214 0.237 0.264 0.276 0.281 0.281
1998 0.056 0.236 0.290 0.337 0.380 0.367 0.325 0.325
1999 0.044 0.195 0.233 0.207 0.222 0.231 0.217 0.217
2000 0.040 0.198 0.305 0.315 0.358 0.386 0.385 0.385
2001 0.022 0.118 0.229 0.256 0.278 0.326 0.390 0.390
2002 0.031 0.183 0.359 0.446 0.487 0.521 0.547 0.547
2003 0.040 0.236 0.331 0.377 0.449 0.555 0.535 0.535
2004 0.032 0.183 0.289 0.293 0.361 0.421 0.364 0.364
2005 0.026 0.149 0.221 0.235 0.274 0.298 0.268 0.268
2006 0.023 0.143 0.204 0.214 0.244 0.252 0.221 0.221
2007 0.017 0.104 0.163 0.204 0.259 0.270 0.228 0.228
2008 0.018 0.112 0.210 0.313 0.358 0.343 0.251 0.251
2009 0.016 0.108 0.188 0.283 0.325 0.316 0.241 0.241
2010 0.013 0.093 0.162 0.214 0.240 0.262 0.227 0.227
2011 0.009 0.063 0.139 0.214 0.282 0.353 0.352 0.352
2012 0.011 0.090 0.221 0.377 0.508 0.603 0.633 0.633
2013 0.008 0.067 0.146 0.228 0.318 0.402 0.513 0.513
2014 0.013 0.113 0.224 0.333 0.428 0.516 0.664 0.664
2015 0.009 0.080 0.177 0.262 0.330 0.357 0.424 0.424
2016 0.010 0.100 0.199 0.252 0.302 0.332 0.362 0.362
2017 0.005 0.056 0.144 0.177 0.176 0.177 0.153 0.153
2018 0.002 0.024 0.078 0.123 0.140 0.141 0.113 0.113
2019 0.002 0.031 0.098 0.153 0.168 0.166 0.121 0.121
2020 0.004 0.054 0.106 0.105 0.082 0.054 0.031 0.031
2021 0.006 0.082 0.123 0.112 0.086 0.057 0.029 0.029
2022 0.007 0.096 0.122 0.090 0.068 0.045 0.022 0.022

Appendix 2: Supplementary figures

Figure A. 1 .East Coast. Catch curves derived from log catch numbers-at-age (commercial catch data). Age 10 represents a plus group.
Line graph showing log catch numbers-at-age by cohort over time for the East Coast.
Figure A. 2 . East Coast. Log mean standardised survey indices-at-age over time for Clupea (upper) and Alba (lower) surveys. Age 10 represents a plus group, not used in assessment.
Top: Line graph showing log mean standardised Clupea survey indices at age over time for the East Coast. Bottom: Line graph showing log mean standardised Alba survey indices at age over time for the East Coast.
Figure A. 3. East Coast. Catch curves for Clupea (upper) and Alba (lower) surveys.
Top: Line graph showing log survey indices-at-age by cohort over time for the East Coast from the Clupea survey. Bottom:Line graph showing log survey indices-at-age by cohort over time for the East Coast from the Alba survey.

Figure A. 4. East Coast. Scatterplots and correlation coefficients of log mean
standardised survey indices by age for Clupea (upper) and Alba (lower) surveys.
Yellow represents high correlation, darker colours represent poorer (or negative)
correlation. Age 10+ is not used in assessment.

Top: Matrix of scatterplots of log mean standardised data by age for the Clupea survey of the East Coast. Bottom: Matrix of scatterplots of log mean standardised data by age for the Alba survey of the East Coast.
Figure A. 5 . East Coast. Comparison of model predictions (line) and observations (circle) of log catch numbers-at-age. Age 10 represents a plus group.
Observed log catch numbers-at-age over time compared to the assessment model predictions for the East Coast.
Figure A. 6 . East Coast. Comparison of model predictions (line) and observations (circle) of log survey numbers-at-age (Clupea).
Observed log survey numbers-at-age over time compared to the model predictions for the Clupea survey of the East Coast.
Figure A. 7 . East Coast. Comparison of model predictions (line) and observations (circle) of log survey numbers-at-age (Alba).
Observed log survey numbers-at-age over time compared to the model predictions for the Alba survey of the East Coast.
Figure A. 8 . East Coast. One-step-ahead residuals by age from the final SAM assessment. Age 10 represents a plusgroup.
Bubble plots showing magnitude of one-step-ahead residuals from the final assessment of the East Coast.
Figure A. 9 . East Coast. Process residuals for numbers and fishing mortality-at-age from the final SAM assessment. Age 10 represents a plusgroup.
Bubble plots showing magnitude of process residuals from the final assessment of the East Coast.
Figure A. 10 . East Coast. Stock-recruit plot from the final SAM assessment. Recruitment (age 3) is in thousands and SSB in tonnes. Values are labelled with recruitment year.
Scatterplot of SSB plotted against recruitment for the East Coast.
Figure A. 11 . East Coast. Estimated yield-per-recruit (solid line) and SSB-per-recruit (dashed line) from the final SAM assessment. Red line indicates Fmax, blue line F0.1 and green line F0.35SPR.
Line plot showing estimated yield-per-recruit and SSB-per-recruit for the final SAM assessment for the East Coast.
Figure A. 12 . North East. Catch curves derived from log catch numbers-at-age (commercial catch data). Age 10 represents a plusgroup.
Line graph showing log catch numbers-at-age by cohort over time for the North East.
Figure A. 13 . North East. Log mean standardised survey indices-at-age over time for Clupea (upper) and Alba (lower) surveys. Age 10 represents a plusgroup, not used in assessment.
Top: Line graph showing log mean standardised Clupea survey indices at age over time for the North East. Bottom: Line graph showing log mean standardised Alba survey indices at age over time for the North East.
Figure A. 14. North East. Catch curves for Clupea (left) and Alba (right) surveys.
Top: Line graph showing log survey indices-at-age by cohort over time for the North East from the Clupea survey. Bottom: Line graph showing log survey indices-at-age by cohort over time for the North East from the Alba survey.
Figure A. 15 .North East. Scatterplots and correlation coefficients of log mean standardised survey indices by age for Clupea (upper) and Alba (lower) surveys. Darker colours represent poorer (or negative) correlation. Age 10+ is not used in assessment.
Top: Matrix of scatterplots of log mean standardised data by age for the Clupea survey of the North East. Bottom: Matrix of scatterplots of log mean standardised data by age for the Alba survey of the North East.
Figure A. 16 . North East. Comparison of model predictions (line) and observations (circle) of log catch numbers-at-age. Age 10 represents a plus group.
Observed log catch numbers-at-age over time compared to the assessment model predictions for the North East.
Figure A. 17 . North East. Comparison of model predictions (line) and observations (circle) of log survey numbers-at-age (Clupea).
Observed log survey numbers-at-age over time compared to the model predictions for the Clupea survey of the North East.
Figure A. 18 . North East. Comparison of model predictions (line) and observations (circle) of log survey numbers-at-age (Alba).
Observed log survey numbers-at-age over time compared to the model predictions for the Alba survey of the North East.
Figure A. 19. North East. One-step-ahead residuals by age from the final SAM assessment. Age 10 represents a plus group.
Bubble plots showing magnitude of one-step-ahead residuals from the final assessment of the North East.
Figure A. 20 . North East. Process residuals for numbers and fishing mortality-at-age from the final SAM assessment. Age 10 represents a plus group.
Bubble plots showing magnitude of process residuals from the final assessment of the North East.
Figure A. 21 . North East. Stock-recruit plot from the final SAM assessment. Recruitment (age 3) is in thousands and SSB in tonnes. Values are labelled with recruitment year.
Scatterplot of SSB plotted against recruitment for the North East.
Figure A. 22 . North East. Estimated yield-per-recruit (solid line) and SSB-per-recruit (dashed line) from the final SAM assessment. Red line indicates Fmax, blue line F0.1 and green line F0.35SPR.
Line plot showing estimated yield-per-recruit and SSB-per-recruit for the final SAM assessment for the North East.
Figure A. 23. North West. Catch curves derived from log catch numbers-at-age (commercial catch data). Age 10 represents a plusgroup.
Line graph showing log catch numbers-at-age by cohort over time for the North West.
Figure A. 24. North West. Log mean standardised survey indices-at-age by year (top: Aora I survey; middle: Aora II survey; bottom: Alba survey). Age 10 represents a plusgroup, not used in assessment.
Top: Line graph showing log mean standardised Aora 1 survey indices at age over time for the North West. Middle: Line graph showing log mean standardised Aora 2 survey indices at age over time for the North West. Bottom: Line graph showing log mean standardised Alba survey indices at age over time for the North West.
Figure A.25. North West. Catch curves for Aora I survey (upper) and Alba survey (lower). The Aora II index is too short to provide useful catch curves.
Top: Line graph showing log survey indices-at-age by cohort over time for the North West from the Aora 1 survey. Bottom: Line graph showing log survey indices-at-age by cohort over time for the North West from the Alba survey.
Figure A.26. North West. Scatterplots of log mean standardised survey indices by age (upper: Aora I; lower: Alba; insufficient years for Aora II). Darker colours represent poorer (or negative) correlation. Age 10+ not used in the assessment.
Top: Matrix of scatterplots of log mean standardised data by age for the Aora 1 survey of the North West. Bottom: Matrix of scatterplots of log mean standardised data by age for the Alba survey of the North West.
Figure A.27. North West. Comparison of model predictions (line) and observations (circle) of log catch numbers-at-age. Age 10 represents a plusgroup.
Observed log catch numbers-at-age over time compared to the assessment model predictions for the North West.
Figure A.28. North West. Comparison of model predictions (line) and observations (circle) of log survey numbers-at-age (Aora I).
Observed log survey numbers-at-age over time compared to the model predictions for the Aora 1 survey of the North West.
Figure A.29. North West. Comparison of model predictions (line) and observations (circle) of log survey numbers-at-age (Aora II).
Observed log survey numbers-at-age over time compared to the model predictions for the Aora 2 survey of the North West.
Figure A.30. North West. Comparison of model predictions (line) and observations (circle) of log survey numbers-at-age (Alba).
Observed log survey numbers-at-age over time compared to the model predictions for the Alba survey of the North West.
Figure A.31. North West. One step ahead residuals from the final SAM run. Age 10 represents a plusgroup.
Bubble plots showing magnitude of one-step-ahead residuals from the final assessment of the North West.
Figure A.32. North West. Process residuals for numbers and fishing mortality-at-age from the final SAM run. Age 10 represents a plusgroup.
Bubble plots showing magnitude of process residuals from the final assessment of the North West.
Figure A.33. North West. Stock-recruit plot from the final SAM run. Recruitment (age 3) is in thousands and SSB in tonnes. Values are labelled with recruitment year.
Scatterplot of SSB plotted against recruitment for the North West.
Figure A.34. North West. Estimated yield per recruit (solid line) and SSB-per-recruit (dashed line) from the final SAM assessment. Red line indicates Fmax, blue line F0.1 and green line F0.35SPR.
Line plot showing estimated yield-per-recruit and SSB-per-recruit for the final SAM assessment for the North West.
Figure A.35. Shetland. Catch curves derived from log catch numbers-at-age (commercial catch data). Age 10 represents a plusgroup.
Line graph showing log catch numbers-at-age by cohort over time for Shetland.
Figure A.36. Shetland. Log mean standardised survey indices-at-age by year (upper: Clupea survey; lower: Alba survey). Age 10 represents a plusgroup, not used in assessment.
Top: Line graph showing log mean standardised Clupea survey indices at age over time for Shetland. Bottom: Line graph showing log mean standardised Alba survey indices at age over time for Shetland.
Figure A.37. Shetland. Catch curves for Clupea survey (upper) and Alba survey (lower).
Top: Line graph showing log survey indices-at-age by cohort over time for Shetland from the Clupea survey. Bottom: Line graph showing log survey indices-at-age by cohort over time for Shetland from the Alba survey.
Figure A.38. Shetland. Scatterplots and correlation coefficients of log mean standardised survey indices by age (upper: Clupea; lower: Alba). Darker colours represent poorer (or negative) correlation. Age 10+ is not used in assessment.
Top: Matrix of scatterplots of log mean standardised data by age for the Clupea survey of Shetland. Bottom: Matrix of scatterplots of log mean standardised data by age for the Alba survey of Shetland.
Figure A.39. Shetland. Comparison of model predictions (line) and observations (circle) of log catch numbers-at-age. Age 10 represents a plusgroup.
Observed log catch numbers-at-age over time compared to the assessment model predictions for Shetland.
Figure A.40. Shetland. Comparison of model predictions (line) and observations (circle) of log survey numbers-at-age (Clupea).
Observed log survey numbers-at-age over time compared to the model predictions for the Clupea survey of Shetland.
Figure A.41. Shetland. Comparison of model predictions (line) and observations (circle) of log survey numbers-at-age (Alba).
Observed log survey numbers-at-age over time compared to the model predictions for the Alba survey of the Shetland.
Figure A.42. Shetland. One-step-ahead residuals by age from the final SAM run. Age 10 represents a plusgroup.
Bubble plots showing magnitude of one-step-ahead residuals from the final assessment of Shetland.
Figure A.43. Shetland. Process residuals for numbers and fishing mortality-at-age from the final SAM run. Age 10 represents a plugroup.
Bubble plots showing magnitude of process residuals from the final assessment of Shetland.
Figure A.44. Shetland. Stock-recruit plot from the final SAM run. Recruitment (age 3) is in thousands and SSB in tonnes. Values are labelled with recruitment year.
Scatterplot of SSB plotted against recruitment for Shetland.
Figure A.45. Shetland. Estimated yield per recruit (solid line) and SSB-per-recruit (dashed line) from the final SAM assessment. Red line indicates Fmax, blue line F0.1 and green line F0.35SPR.
Line plot showing estimated yield-per-recruit and SSB-per-recruit for the final SAM assessment for Shetland.
Figure A.46. West of Kintyre. Catch curves derived from log catch numbers-at-age (commercial catch data). Age 10 represents a plus group.
Line graph showing log catch numbers-at-age by cohort over time for the West of Kintyre.
Figure A.47. West of Kintyre. Log mean standardised survey indices-at-age by year (top: Aora I survey; middle: Aora II survey; bottom: Alba survey). Age 10 represents a plus group, not used in assessment.
Top: Line graph showing log mean standardised Aora 1 survey indices at age over time for the West of Kintyre. Middle:Line graph showing log mean standardised Aora 2 survey indices at age over time for the West of Kintyre. Bottom:Line graph showing log mean standardised Alba survey indices at age over time for the West of Kintyre.
Figure A.48. West of Kintyre. Catch curves for Aora I survey (upper) and Alba survey (lower). The Aora II index is too short to provide useful catch curves.
Top: Line graph showing log survey indices-at-age by cohort over time for the West of Kintyre from the Aora 1 survey. Bottom: Line graph showing log survey indices-at-age by cohort over time for the West of Kintyre from the Alba survey.
Figure A.49. West of Kintyre. Scatterplots and correlation coefficients of log mean standardised survey indices by age for Aora I (upper) and Alba (lower). Darker colours represent poorer (or negative) correlation. Age 10+ not used in assessment.
Top: Matrix of scatterplots of log mean standardised data by age for the Aora 1 survey of West of Kintyre. Bottom: Matrix of scatterplots of log mean standardised data by age for the Alba survey of West of Kintyre.
Figure A.50. West of Kintyre. Comparison of model predictions (line) and observations (circle) of log catch numbers-at-age. Age 10 represents a plus group.
Observed log catch numbers-at-age over time compared to the assessment model predictions for the West of Kintyre.
Figure A.51. West of Kintyre. Comparison of model predictions (line) and observations (circle) of log survey numbers-at-age (Aora I).
Observed log survey numbers-at-age over time compared to the model predictions for the Aora 1 survey of the West of Kintyre.
Figure A.52. West of Kintyre. Comparison of model predictions (line) and observations (circle) of log survey numbers-at-age (Aora II).
Observed log survey numbers-at-age over time compared to the model predictions for the Aora 2 survey of the West of Kintyre.
Figure A.53. West of Kintyre. Comparison of model predictions (line) and observations (circle) of log survey numbers-at-age (Alba).
Observed log survey numbers-at-age over time compared to the model predictions for the Alba survey of the West of Kintyre.
Figure A.54. West of Kintyre. One step ahead residuals by age from the final SAM run. Age 10 represents a plusgroup.
Bubble plots showing magnitude of one-step-ahead residuals from the final assessment of the West of Kintyre.
Figure A.55. West of Kintyre. Process residuals for numbers and fishing mortality-at-age from the final SAM run. Age 10 represents a plusgroup.
Bubble plots showing magnitude of process residuals from the final assessment of the West of Kintyre.
Figure A.56. West of Kintyre. Stock-recruit plot from the final SAM run. Recruitment (age 3) is in thousands and SSB in tonnes. Values are labelled with recruitment year.
Scatterplot of SSB plotted against recruitment for the West of Kintyre.
Figure A.57. West of Kintyre. Estimated yield per recruit (solid line) and SSB-per-recruit (dashed line) from the final SAM assessment. Red line indicates Fmax, blue line F0.1 and green line F0.35SPR.
Line plot showing estimated yield-per-recruit and SSB-per-recruit for the final SAM assessment for the West of Kintyre.

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