Scottish Marine and Freshwater Science Volume 3 Number 6: Development of a GIS based Aquaculture Decision Support Tool (ADST) to determine the potential benthic impacts associated with the expansion of salmon farming in Scottish sea lochs

This paper presents a GIS based aquaculture decision

support tool (ADST) to assist with planning the sustainable development of the aquaculture

industry in Scotland.


Annex 4

Theoretical potential maximum biomass (B TMAX) values for Scottish sea lochs with the corresponding areas required to produce this biomass (A REQ) (Lochs ordered by region).

(BOLD values = limiting factors)
(Italic values = Values where B TMAX were based only on nutrient enrichment as there were not enough data to run ECE_MOD (11 sea lochs))
( *naa = no A (15-70 m) available (10 sea lochs).

Loch ID Loch No Loch Name Max Pot Biomass
BI pa
(t yr -1)
Max Pot Biomass
ECE pa
(t yr -1)
Max Pot Biomass
B TMAX (t yr -1)
Current Consented biomass (B C)
(Feb 2012)
(t yr -1)
Biomass Gap between B TMAX and B C
(t yr -1)
Sea Loch Area
15-70 m (km 2)
Production per leased area km -2 (no 0s) (P d, t yr -1 km -2) A REQ for B TMAX
(km 2)

A REQ for B TMAX
% A (15-70 m)
% B TMAX possible within
A (15-70 m)
B TMAX possible within
A (15-70 m)
(t yr -1)
SH01 5 AITH VOE 44900 11544 11544 3484 8060 3.2 2958 2.3 73.5 136.1 15713
SH02 11 BALTASOUND 11200 9705 9705 1220 8485 0.4 705 2.0 465.1 21.5 2087
SH03 12 BASTA VOE 40900 15234 15234 2550 12684 2.6 6125 3.1 117.9 84.8 12926
SH04 16 BRINDISTER 68900 7644 7644 2666 4978 1.2 6598 1.6 132.7 75.3 5759
SH05 19 BURWICK 4500 544 544 600 -56 0.1 3682 0.1 104.8 95.5 519
SH06 20 BUSTA 37700 7296 7296 1050 6246 1.7 2309 1.5 86.7 115.3 8414
SH07 26 CAT FIRTH 26900 6887 6887 2300 4587 0.6 7674 1.4 233.8 42.8 2946
SH08 29 CLIFT SOUND 67000 16627 16627 4773 11853 4.3 2695 3.4 79.0 126.6 21045
SH09 30 COLLAFIRTH 11100 2357 2357 1225 1132 0.3 2835 0.5 151.0 66.2 1561
SH10 33 DALES VOE 26400 5396 5396 1600 3796 1.5 2895 1.1 75.2 132.9 7173
SH11 34 DALES VOE NORTH 25100 7912 7912 850 7062 1.5 1.6 107.0 93.5 7398
SH12 37 DURY VOE 167200 24720 24720 5460 19260 8.6 4638 5.0 58.1 172.1 42533
SH13 52 GRUTING 64100 10351 10351 4395 5956 3.1 9733 2.1 68.5 145.9 15102
SH14 59 LAXFIRTH 19800 5685 5685 2950 2735 0.5 9412 1.2 224.9 44.5 2527
SH15 68 MID YELL 17100 4532 4532 1210 3322 0.1 4330 0.9 1218.4 8.2 372
SH16 73 NORTHRA VOE 1900 537 537 500 37 0.0 0.1 381.0 26.2 141
SH17 75 OLNA VOE 36800 9608 9608 3100 6508 2.5 41404 1.9 77.7 128.7 12366
SH18 81 RONAS VOE 63000 22528 22528 2633 19895 5.9 4070 4.6 77.4 129.1 29088
Loch ID Loch No Loch Name Max Pot Biomass
BI pa
(t yr -1)
Max Pot Biomass
ECE pa
(t yr -1)
Max Pot Biomass
B TMAX (t yr -1)
Current Consented biomass (B C)
(Feb 2012)
(t yr -1)
Biomass Gap between B TMAX and B C
(t yr -1)
Sea Loch Area
15-70 m (km 2)
Production per leased area km -2 (no 0s) (P d, t yr -1 km -2) A REQ for B TMAX
(km 2)

A REQ for B TMAX
% A (15-70 m)
% B TMAX possible within
A (15-70 m)
B TMAX possible within
A (15-70 m)
(t yr -1)
SH19 83 SANDSOUND 67900 9257 9257 5136 4121 1.9 4265 1.9 101.1 98.9 9152
SH20 86 SELIVOE 69900 7467 7467 963 6504 2.7 1.5 57.0 175.5 13107
SH21 96 STROMNESS VOE 5400 3477 3477 1650 1827 0.3 19552 0.7 237.0 42.2 1467
SH22 98 SWARBACKS MINN 208500 74071 74071 17747 56324 11.3 1650 15.0 132.5 75.5 55916
SH23 100 SWINING VOE 21300 8715 8715 5760 2955 1.8 5999 1.8 97.0 103.1 8982
SH24 101 SWINISTER VOE 134200 78724 78724 18903 59821 5.9 9660 16.0 270.7 36.9 29082
SH25 107 VAILA SOUND 32000 6118 6118 5515 603 0.8 13006 1.2 157.0 63.7 3896
SH26 108 VIDLIN VOE 29500 6877 6877 4336 2541 1.1 1.4 131.2 76.2 5242
SH27 110 WEISDALE 35500 9328 9328 3952 5376 3.3 2090 1.9 57.6 173.7 16199
SH28 111 WEST BURRA FIRTH 1455 1455 0 1455 0.3 0.3 117.1 85.4 1243
SH29 114 WHITENESS VOE 38800 4551 4551 500 4051 0.9 0.9 102.1 98.0 4458
SH30 109 WADBISTER VOE 21600 4073 4073 800 3273 0.6 3744 0.8 147.4 67.9 2763
SH31 113 WHALEFIRTH 8163 8163 813 7350 0.0 1.7 naa 0.0 0
OR02 57 KIRK HOPE 1924 1924 0 1924 0.0 0.4 naa 0.0 0
OR03 76 PIEROWALL HARBOUR 5900 3697 3697 165 3532 0.0 811 0.7 naa 0.0 0
NW01 4 AIRDBHAIR 1600 1559 1559 750 809 0.0 7443 0.3 naa 0.0 0
NW02 8 ALSH 313000 113159 113159 5500 107659 13.0 3681 23.0 176.5 56.7 64107
NW03 9 ARNISH 17100 5757 5757 0 5757 1.6 1.2 72.4 138.1 7949
NW04 10 BADCALL BAY 8400 4105 4105 1560 2545 0.3 4996 0.8 244.8 40.8 1677
NW05 18 BROOM 217700 64810 64810 1050 63760 9.6 699 13.1 136.7 73.2 47419
NW06 21 CAIRNBHAIN 134900 53402 53402 2550 50852 7.8 653 10.8 139.2 71.8 38351
NW07 22 CALBHA BAY 5800 2144 2144 1080 1064 0.2 0.4 182.2 54.9 1177
NW08 25 CARRON 241700 86980 86980 1375 85605 7.3 2616 17.6 241.0 41.5 36091
NW09 28 CLASH 5700 3897 3897 1030 2867 0.5 0.8 155.3 64.4 2509
NW10 35 DUICH 143900 46829 46829 2125 44704 6.0 2630 9.5 158.2 63.2 29605
Loch ID Loch No Loch Name Max Pot Biomass
BI pa
(t yr -1)
Max Pot Biomass
ECE pa
(t yr -1)
Max Pot Biomass
B TMAX (t yr -1)
Current Consented biomass (B C)
(Feb 2012)
(t yr -1)
Biomass Gap between B TMAX and B C
(t yr -1)
Sea Loch Area
15-70 m (km 2)
Production per leased area km -2 (no 0s) (P d, t yr -1 km -2) A REQ for B TMAX
(km 2)
A REQ for B TMAX
% A (15-70 m)
% B TMAX possible within
A (15-70 m)
B TMAX possible within
A (15-70 m)
(t yr -1)
NW11 41 ERIBOLL 378300 147134 147134 1338 145796 24.7 6426 29.8 120.8 82.8 121810
NW12 44 EWE 620200 168888 168888 1370 167518 24.0 4598 34.3 142.9 70.0 118185
NW13 55 INCHARD 39000 14143 14143 0 14143 2.3 2.9 127.5 78.4 11094
NW14 58 KISHORN 68800 33277 33277 4548 28729 4.9 6459 6.8 138.1 72.4 24104
NW15 60 LAXFORD 72200 27007 27007 1840 25167 2.5 3068 5.5 216.9 46.1 12449
NW16 63 LITTLE L BROOM 216800 94038 94038 2062 91976 14.8 3530 19.1 128.7 77.7 73045
NW17 71 NEDD 5400 2064 2064 250 1814 0.0 0.4 2838.2 3.5 73
NW18 103 TORRIDON 818400 302594 302594 4535 298059 42.0 3641 61.4 146.2 68.4 206904
WI01 6 A'LAIP 10400 3853 3853 750 3103 0.0 0.8 120857 0.1 3
WI02 14 BOISDALE 55600 16263 16263 2600 13663 1.8 5375 3.3 181.1 55.2 8978
WI03 17 BROAD BAY 1082800 307071 307071 2240 304831 45.8 62.3 136.1 73.5 225675
WI04 24 CARNAN 7600 2406 2406 410 1996 0.0 0.5 naa 0.0 0
WI05 27 CLAIDH 16980 16980 0 16980 3.4 3.4 100.1 99.9 16962
WI06 38 EAST LOCH TARBERT 79100 97732 79100 7932 71168 17.1 4648 16.0 93.8 106.6 84301
WI07 40 EPORT 25300 14304 14304 1800 12504 0.4 5031 2.9 804.9 12.4 1777
WI08 42 ERISORT/LEURBOST 67400 59250 59250 4977 54273 6.6 11088 12.0 181.7 55.0 32615
WI09 45 EYNORT 10600 8369 8369 20 8349 0.4 1.7 426.1 23.5 1964
WI10 48 GEOCRAB 20600 2282 2282 200 2082 0.2 0.5 305.0 32.8 748
WI11 50 GRIMSHADER 3900 3358 3358 622 2736 0.2 29806 0.7 342.4 29.2 981
WI12 51 GROSEBAY 44100 11200 11200 450 10750 1.6 4741 2.3 145.6 68.7 7693
WI13 56 KILERIVAGH 2985 2985 0 2985 0.0 0.6 naa 0.0 0
WI14 65 MEANERVAGH 400 586 400 420 -20 0.0 8441 0.1 naa 0.0 0
WI15 67 MHARABHIG 5100 1606 1606 0 1606 0.0 0.3 naa 0.0 0
WI16 74 ODHAIRN 6500 6526 6500 2075 4426 0.9 13578 1.3 154.6 64.7 4205
WI17 80 ROAG 125400 220132 125400 14597 110803 35.2 7934 25.4 72.3 138.3 173406
Loch ID Loch No Loch Name Max Pot Biomass
BI pa
(t yr -1)
Max Pot Biomass
ECE pa
(t yr -1)
Max Pot Biomass
B TMAX (t yr -1)
Current Consented biomass (B C)
(Feb 2012)
(t yr -1)
Biomass Gap between B TMAX and B C
(t yr -1)
Sea Loch Area
15-70 m (km 2)
Production per leased area km -2 (no 0s) (P d, t yr -1 km -2) A REQ for B TMAX
(km 2)
A REQ for B TMAX
% A (15-70 m)
% B TMAX possible within
A (15-70 m)
B TMAX possible within
A (15-70 m)
(t yr -1)
WI18 85 SEAFORTH 61300 93153 61300 5961 55339 15.9 2455 12.4 78.2 127.8 78346
WI19 87 SHEILAVAIG 5800 2054 2054 2111 -57 0.0 7718 0.4 naa 0.0 0
WI20 88 SHELL 43900 55338 43900 3401 40499 10.0 19136 8.9 89.3 112.0 49182
WI21 89 SKIPORT 13700 11003 11003 2460 8543 1.1 19366 2.2 196.7 50.8 5594
WI22 94 STOCKINISH 18400 5749 5749 495 5254 0.5 1.2 243.8 41.0 2358
WI23 106 UISKEVAGH 11200 6788 6788 1455 5333 0.0 6975 1.4 naa 0.0 0
WI24 112 WEST LOCH TARBERT 122600 79215 79215 4658 74557 16.1 11562 16.1 99.7 100.3 79466
SK01 3 AINORT 39300 14248 14248 1800 12448 1.7 4968 2.9 170.5 58.7 8357
SK02 13 BAY 226800 62899 62899 500 62399 11.0 796 12.8 115.8 86.3 54307
SK03 15 BRACADALE 479100 127695 127695 2075 125620 32.1 6990 25.9 80.8 123.7 158014
SK04 36 DUNVEGAN 362600 88737 88737 2771 85966 6.1 12060 18.0 296.6 33.7 29922
SK05 39 EISHORT 30800 9379 9379 1200 8179 0.2 4487 1.9 773.9 12.9 1212
SK06 49 GRESHORNISH 26600 19339 19339 1875 17464 2.3 5832 3.9 173.2 57.8 11168
SK07 53 HARPORT 101400 27344 27344 2000 25344 4.0 39240 5.5 140.4 71.2 19481
SK08 77 POOL TIEL 33100 10796 10796 200 10596 2.4 2.2 90.2 110.8 11966
SK09 78 PORTREE 18700 17124 17124 1794 15330 2.8 26933 3.5 125.6 79.6 13630
SK10 90 SLAPIN 15200 7843 7843 350 7493 0.0 3402 1.6 54827.1 0.2 14
SK11 91 SLIGACHAN 24600 7081 7081 800 6281 0.3 1.4 416.4 24.0 1700
SK12 92 SNIZORT BEG 95300 27668 27668 500 27168 2.9 5.6 194.3 51.5 14243
SK13 105 UIG BAY 276100 8623 8623 1000 7623 1.7 1.7 105.0 95.3 8216
ML01 70 NA KEAL 303700 109613 109613 2000 107613 17.6 31784 22.2 126.2 79.2 86864
ML02 84 SCRIDAIN 396500 90569 90569 0 90569 18.7 18.4 98.0 102.0 92392
ML03 93 SPELVE 114900 28090 28090 1050 27040 4.4 836 5.7 130.1 76.9 21588
ML04 102 TOBERMORY BAY 6208 6208 0 6208 1.1 1.3 111.0 90.1 5591
ML05 104 TUATH 350200 73643 73643 850 72793 14.6 14506 14.9 102.7 97.4 71727
Loch ID Loch No Loch Name Max Pot Biomass
BI pa
(t yr -1)
Max Pot Biomass
ECE pa
(t yr -1)
Max Pot Biomass
B TMAX (t yr -1)
Current Consented biomass (B C)
(Feb 2012)
(t yr -1)
Biomass Gap between B TMAX and B C
(t yr -1)
Sea Loch Area
15-70 m (km 2)
Production per leased area km -2 (no 0s) (P d, t yr -1 km -2) A REQ for B TMAX
(km 2)
A REQ for B TMAX
% A (15-70 m)
% B TMAX possible within
A (15-70 m)
B TMAX possible within
A (15-70 m)
(t yr -1)
SW01 1 A'CHOIRE 9700 3861 3861 1445 2416 0.6 4539 0.8 135.2 73.9 2855
SW02 2 AILORT 119400 32610 32610 300 32310 2.4 194 6.6 279.6 35.8 11662
SW03 7 ALINE 6985 6985 0 6985 0.3 1.4 407.8 24.5 1713
SW04 23 CAOLISPORT 199600 12180 12180 192 11988 5.1 2.5 48.0 208.2 25359
SW05 31 CRAIGNISH 239600 27418 27418 3498 23920 4.1 1990 5.6 136.2 73.4 20125
SW06 32 CRERAN 112900 36435 36435 3000 33435 3.9 3339 7.4 189.1 52.9 19268
SW07 43 ETIVE 288900 46311 46311 3208 43103 18.7 9.4 50.2 199.4 92333
SW08 46 FEOCHAN 11041 11041 0 11041 0.3 2.2 889.6 11.2 1241
SW09 47 FYNE 1502000 516549 516549 11684 504865 104.5 3872 104.8 100.2 99.8 515289
SW10 54 HOURN 395000 131895 131895 3225 128670 16.7 4560 26.8 160.2 62.4 82339
SW11 61 LEVEN 83200 26647 26647 1450 25197 4.6 3709 5.4 117.6 85.0 22653
SW12 62 LINNHE 374200 113404 113404 4490 108914 17.6 2049 23.0 130.7 76.5 86775
SW13 66 MELFORT 122000 21225 21225 615 20610 8.3 33691 4.3 52.0 192.1 40781
SW14 69 MOIDART 3432 3432 0 3432 0.1 0.7 1382.0 7.2 248
SW15 72 NEVIS 349100 116042 116042 4000 112042 15.5 6548 23.5 151.4 66.1 76647
SW16 79 RIDDON 36700 6620 6620 500 6120 1.7 1.3 79.4 126.0 8340
SW17 82 RYAN 94086 94086 0 94086 0.1 19.1 22236.8 0.4 423
SW18 95 STRIVEN 110300 33724 33724 1237 32487 12.0 2844 6.8 57.2 174.8 58940
SW19 97 SUNART 376100 183091 183091 7990 175101 31.9 6756 37.1 116.6 85.8 157073
SW20 99 SWEEN 28856 28856 0 28856 7.3 5.9 80.5 124.2 35836
SW21 64 LONG 549000 124250 124250 500 123750 34.5 25.2 73.0 137.0 170263

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