SMAST Fishermen's Steering Committee Meeting
2016 Industry Funded SMAST Drop Camera Survey Results Scallop PDT Meeting - August 30, 2016
School for Marine Science and Technology University of Massachusetts Dartmouth
2016 Industry Funded SMAST Drop Camera Surveys • Closed Area I • • • • •
F/V Liberty, Nordic Fisheries 1.5 nautical mile grid 256 Stations Large, Small and Digital Still Cameras June 20th (4 days)
• Nantucket Lightship • • • • •
F/V Resolution, Eastern Fisheries 1.5 nautical mile grid 293 Stations Large, Small and Digital Still Cameras June 27th (4 days)
Digital Still Camera = 1.13 m2
Large Camera = 3.2 m2
Small Camera = 0.8 m2
Side Camera
Results Closed Area I: Large Cam and DSC
CAI NA-N Biomass = 3698 Expl = 2989
CAI AC Biomass = 1172 Expl = 791
CAI AC + NSt Biomass = 1362 Expl = 889
2016 Closed Area I – Large Camera Results 2016 - Large Cam CL1-NA-N CL1-AC GB Non-strata CA1 Access
CL1-NA-N CL1-AC GB Non-strata CA1 Access Total
Shell height 113.54 95.62 84.41 94
Number 122 77 13 90
Total Biomass 2016 meat(g) Mill lb 23.38 8.2 19.88 3 15.08 0.4 19.29 3 15
MT 3,698 1,172 176 1,362 5060
Mean m2 Stations 0.336 61 0.05 160 0.04 35 0.05 195
SE 1021 267 54 268
SE 0.093 0.01 0.01 0.01
Exploitable Biomass meat (g) Mill lb 27.57 6.6 30.52 2 23.18 0.2 30.07 2 11
CV 27.6 22.8 30.53 19.69
MT 2,989 791 79 889 3878
Millions 115 59 12 71
SE 825 180 24 175
*CA 1 Access = CL 1-AC + GB Non-strata
Shell Height Frequency – Closed Area I (Large Camera) 20 18
16
Frequency
14 12 10 8 6 4 2 0 0
15
30
45
60
75
90 105 120 Shell Height (mm)
135
150
165
180
195
< 75 mm
2016 Closed Area I – Digital Still Camera Results 2016 - DSC Shell Height Number DSC CL1-NA-N 113.56 DSC CL1-AC 84.24 DSC GB Non-Strata 63.92 DSC CAI Access 83.08
2016 - DSC DSC CL1-NA-N DSC CL1-AC DSC GB Non-Strata DSC CAI Access
162 66 4 70
Mean m2 Stations SE 0.49 60 0.07 155 0.02 34 0.06 189
Total Biomass Meat (g) Mill lb MT SE 23.92 12 5,524 1,403 16.62 3 1,410 290 10.04 0 58 24 16.3 3 1,476 289
CV 0.13 0.01 0.01 0.01
25.4 20.57 41.92 19.58
Millions 206 84 5 90
Exploitable Biomass Meat (g) Mill lb MT 28.54 10 4,553 31.32 2 996 22.97 0 27 31.21 2 1,032
SE 1157 205 11 202
Results: NLSA Large Cam and DSC
Digital Still Camera
Digitized Large Camera
NLS AC-N Biomass = 6328 Expl = 5040
NLS NA Biomass = 29165 Expl = 9804
NLS EXT Biomass = 4982 Expl = 2186
NLS AC-S Biomass = 36581 Expl = 4845
2016 Nantucket Lightship Area – Large Camera Results 2016 - Large Cam NLS_NA NLS-AC-N NLS-AC-S NLS_EXT
Shell height 79.88 112.31 65.87 91.81
Total Biomass 2016 - Large Cam meat (g) NLS_NA 11.77 NLS-AC-N 28.92 NLS-AC-S 6.25 NLS_EXT 15.95 Total
2016 VIMS SH NLS_NA NLS-AC-N NLS-AC-S NLS_EXT Total
Number 2218 261 3682 299
Mill lb 64 14 81 11 170
Total Biomass meat (g) Mill lb 10.43 57 28.92 14 4.51 58 15.79 11 140
MT 29,165 6,328 36,581 4,982 77056
MT 25,856 6,328 26,411 4,932 63527
Mean m2 Stations 3.31 97 0.35 81 12.05 63 0.75 54
SE 1.12 0.06 3.08 0.69
CV 33.7 16.03 25.55 91.86
Millions 2,478 219 5,856 312
SE 9,829 1,015 9,346 4,577
Exploitable Biomass meat (g) Mill lb 19.98 22 33.82 11 11.66 11 20.05 5 49
MT 9,804 5,040 4,845 2,186 21875
SE 3,304 808 1,238 2,008
SE 8,714.2 1,015 6,747.5 4,530.1
Exploitable Biomass meat (g) Mill lb 16.7 18 33.82 11 7.8 7 19.4 5 41
MT 8,194 5,040 3,244 2112 18590
SE 2,762 808 829 1940
Comparison of NLSA in 2015 and 2016 2015 Average Density NLS_NA NLS-AC-N NLS-AC-S NLS_EXT
8.47 0.27 14.05 0.04
Abundance (millions) NLS_NA 6535 NLS-AC-N 201 NLS-AC-S 6506 NLS_EXT 15
2016 Difference (2016-2015) 3.31 -5.16 0.35 0.08 12.05 -2.00 0.75 0.71
2478 219 5856 312
-4057 18 -650 297
Average Shell Height (mm) NLS_NA 54.5 79.9 NLS-AC-N 65.7 112.3 NLS-AC-S 48.8 65.9 NLS_EXT 75.7 91.8
25.4 46.6 17.1 16.1
2015 Total Average biomass (MT) NLS_NA 26658 NLS-AC-N 1797 NLS-AC-S 18111 NLS_EXT 143
2016 Difference 29165 6328 36581 4982
2507 4531 18470 4839
Exploitable Average biomass (MT) NLS_NA 1977 9804 NLS-AC-N 897 5040 NLS-AC-S 543 4845 NLS_EXT 29 2186
7827 4143 4302 2157
Shell Height Frequency – NLSA, Large Camera 900 800 700
Frequency
600 500 400
300 200 100
0 0
15
30
45
60
75
90 105 120 Shell Height (mm)
135
150
165
180
195
2016 Nantucket Lightship Area– Digital Still Camera Results 2016 - DSC DSC NLS_NA DSC NLS-AC-N DSC NLS-AC-S DSC NLS_EXT
2016 - DSC DSC NLS_NA DSC NLS-AC-N DSC NLS-AC-S DSC NLS_EXT
Shell Height Number Mean m2 Stations SE CV Abundance 86.7 1092 3.59 79 1.32 36.64 2,189,184,099 120.5 141 0.34 81 0.06 16.51 210,228,448 65.36 3921 14.78 60 3.85 26.04 6,843,980,132 91.36 220 0.7 54 0.63 89.99 291,438,669
Meat (g) 14.91 35.55 6.12 16.12
Total Biomass Mill lb MT SE 72 32,636 11,959 16 7,474 1,234 92 41,881 10,904 10 4,697 4,227
Exploitable Biomass Meat (g) Mill lb MT 23.76 33 14,757 39.84 15 6,581 10.72 11 5,036 20.06 5 2,106
SE 5,407 1,087 1,311 1,895
Total Sea Scallop Meat Weight by Area (million lbs)
2016 (NLSA + CA1)
182
58
Thank you! Questions / Discussion
School for Marine Science and Technology University of Massachusetts Dartmouth
2016 Industry Funded SMAST Drop Camera Surveys • Closed Area I • • • • •
F/V Liberty, Nordic Fisheries 1.5 nautical mile grid 256 Stations Large, Small and Digital Still Cameras June 20th (4 days)
• Nantucket Lightship • • • • •
F/V Resolution, Eastern Fisheries 1.5 nautical mile grid 293 Stations Large, Small and Digital Still Cameras June 27th (4 days)
Digital Still Camera = 1.13 m2
Large Camera = 3.2 m2
Small Camera = 0.8 m2
Side Camera
Results Closed Area I: Large Cam and DSC
CAI NA-N Biomass = 3698 Expl = 2989
CAI AC Biomass = 1172 Expl = 791
CAI AC + NSt Biomass = 1362 Expl = 889
2016 Closed Area I – Large Camera Results 2016 - Large Cam CL1-NA-N CL1-AC GB Non-strata CA1 Access
CL1-NA-N CL1-AC GB Non-strata CA1 Access Total
Shell height 113.54 95.62 84.41 94
Number 122 77 13 90
Total Biomass 2016 meat(g) Mill lb 23.38 8.2 19.88 3 15.08 0.4 19.29 3 15
MT 3,698 1,172 176 1,362 5060
Mean m2 Stations 0.336 61 0.05 160 0.04 35 0.05 195
SE 1021 267 54 268
SE 0.093 0.01 0.01 0.01
Exploitable Biomass meat (g) Mill lb 27.57 6.6 30.52 2 23.18 0.2 30.07 2 11
CV 27.6 22.8 30.53 19.69
MT 2,989 791 79 889 3878
Millions 115 59 12 71
SE 825 180 24 175
*CA 1 Access = CL 1-AC + GB Non-strata
Shell Height Frequency – Closed Area I (Large Camera) 20 18
16
Frequency
14 12 10 8 6 4 2 0 0
15
30
45
60
75
90 105 120 Shell Height (mm)
135
150
165
180
195
< 75 mm
2016 Closed Area I – Digital Still Camera Results 2016 - DSC Shell Height Number DSC CL1-NA-N 113.56 DSC CL1-AC 84.24 DSC GB Non-Strata 63.92 DSC CAI Access 83.08
2016 - DSC DSC CL1-NA-N DSC CL1-AC DSC GB Non-Strata DSC CAI Access
162 66 4 70
Mean m2 Stations SE 0.49 60 0.07 155 0.02 34 0.06 189
Total Biomass Meat (g) Mill lb MT SE 23.92 12 5,524 1,403 16.62 3 1,410 290 10.04 0 58 24 16.3 3 1,476 289
CV 0.13 0.01 0.01 0.01
25.4 20.57 41.92 19.58
Millions 206 84 5 90
Exploitable Biomass Meat (g) Mill lb MT 28.54 10 4,553 31.32 2 996 22.97 0 27 31.21 2 1,032
SE 1157 205 11 202
Results: NLSA Large Cam and DSC
Digital Still Camera
Digitized Large Camera
NLS AC-N Biomass = 6328 Expl = 5040
NLS NA Biomass = 29165 Expl = 9804
NLS EXT Biomass = 4982 Expl = 2186
NLS AC-S Biomass = 36581 Expl = 4845
2016 Nantucket Lightship Area – Large Camera Results 2016 - Large Cam NLS_NA NLS-AC-N NLS-AC-S NLS_EXT
Shell height 79.88 112.31 65.87 91.81
Total Biomass 2016 - Large Cam meat (g) NLS_NA 11.77 NLS-AC-N 28.92 NLS-AC-S 6.25 NLS_EXT 15.95 Total
2016 VIMS SH NLS_NA NLS-AC-N NLS-AC-S NLS_EXT Total
Number 2218 261 3682 299
Mill lb 64 14 81 11 170
Total Biomass meat (g) Mill lb 10.43 57 28.92 14 4.51 58 15.79 11 140
MT 29,165 6,328 36,581 4,982 77056
MT 25,856 6,328 26,411 4,932 63527
Mean m2 Stations 3.31 97 0.35 81 12.05 63 0.75 54
SE 1.12 0.06 3.08 0.69
CV 33.7 16.03 25.55 91.86
Millions 2,478 219 5,856 312
SE 9,829 1,015 9,346 4,577
Exploitable Biomass meat (g) Mill lb 19.98 22 33.82 11 11.66 11 20.05 5 49
MT 9,804 5,040 4,845 2,186 21875
SE 3,304 808 1,238 2,008
SE 8,714.2 1,015 6,747.5 4,530.1
Exploitable Biomass meat (g) Mill lb 16.7 18 33.82 11 7.8 7 19.4 5 41
MT 8,194 5,040 3,244 2112 18590
SE 2,762 808 829 1940
Comparison of NLSA in 2015 and 2016 2015 Average Density NLS_NA NLS-AC-N NLS-AC-S NLS_EXT
8.47 0.27 14.05 0.04
Abundance (millions) NLS_NA 6535 NLS-AC-N 201 NLS-AC-S 6506 NLS_EXT 15
2016 Difference (2016-2015) 3.31 -5.16 0.35 0.08 12.05 -2.00 0.75 0.71
2478 219 5856 312
-4057 18 -650 297
Average Shell Height (mm) NLS_NA 54.5 79.9 NLS-AC-N 65.7 112.3 NLS-AC-S 48.8 65.9 NLS_EXT 75.7 91.8
25.4 46.6 17.1 16.1
2015 Total Average biomass (MT) NLS_NA 26658 NLS-AC-N 1797 NLS-AC-S 18111 NLS_EXT 143
2016 Difference 29165 6328 36581 4982
2507 4531 18470 4839
Exploitable Average biomass (MT) NLS_NA 1977 9804 NLS-AC-N 897 5040 NLS-AC-S 543 4845 NLS_EXT 29 2186
7827 4143 4302 2157
Shell Height Frequency – NLSA, Large Camera 900 800 700
Frequency
600 500 400
300 200 100
0 0
15
30
45
60
75
90 105 120 Shell Height (mm)
135
150
165
180
195
2016 Nantucket Lightship Area– Digital Still Camera Results 2016 - DSC DSC NLS_NA DSC NLS-AC-N DSC NLS-AC-S DSC NLS_EXT
2016 - DSC DSC NLS_NA DSC NLS-AC-N DSC NLS-AC-S DSC NLS_EXT
Shell Height Number Mean m2 Stations SE CV Abundance 86.7 1092 3.59 79 1.32 36.64 2,189,184,099 120.5 141 0.34 81 0.06 16.51 210,228,448 65.36 3921 14.78 60 3.85 26.04 6,843,980,132 91.36 220 0.7 54 0.63 89.99 291,438,669
Meat (g) 14.91 35.55 6.12 16.12
Total Biomass Mill lb MT SE 72 32,636 11,959 16 7,474 1,234 92 41,881 10,904 10 4,697 4,227
Exploitable Biomass Meat (g) Mill lb MT 23.76 33 14,757 39.84 15 6,581 10.72 11 5,036 20.06 5 2,106
SE 5,407 1,087 1,311 1,895
Total Sea Scallop Meat Weight by Area (million lbs)
2016 (NLSA + CA1)
182
58
Thank you! Questions / Discussion
