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Huse, Geir (2014): Spatially explicit estimates of length and biomass of Micromesistius poutassou (Blue Whiting) from acoustic and trawl surveys in the North-East Atlantic in May 2004 [dataset]. Institute of Marine Research, Bergen, PANGAEA, https://doi.org/10.1594/PANGAEA.827372, In supplement to: Huse, Geir; MacKenzie, Brian R; Trenkel, Verena M; Doray, Mathieu; Nøttestad, Leif; Óskarsson, Guomundur J (2015): Spatially explicit estimates of stock sizes, structure and biomass of herring and blue whiting, and catch data of bluefin tuna. Earth System Science Data, 7(1), 35-46, https://doi.org/10.5194/essd-7-35-2015

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Abstract:
Acoustic estimates of herring and blue whiting abundance were obtained during the surveys using the Simrad ER60 scientific echosounder. The allocation of NASC-values to herring, blue whiting and other acoustic targets were based on the composition of the trawl catches and the appearance of echo recordings. To estimate the abundance, the allocated NASC -values were averaged for ICES-squares (0.5° latitude by 1° longitude). For each statistical square, the unit area density of fish (rA) in number per square nautical mile (N*nm-2) was calculated using standard equations (Foote et al., 1987; Toresen et al., 1998). To estimate the total abundance of fish, the unit area abundance for each statistical square was multiplied by the number of square nautical miles in each statistical square and then summed for all the statistical squares within defined subareas and over the total area. Biomass estimation was calculated by multiplying abundance in numbers by the average weight of the fish in each statistical square then summing all squares within defined subareas and over the total area. The Norwegian BEAM soft-ware (Totland and Godø 2001) was used to make estimates of total biomass.
Further details:
Foote, KG; Knudsen, H P; Vestnes, G; MacLennan, David N; Simmonds, E J (1987): Calibration of acoustic instruments for fish density estimation: a practical guide. Ices Cooperative Research Report-Rapport des Recherches Collectives, 144, 69, https://doi.org/10.1121/1.396131
Toresen, R; Grøsaeter, H; de Barros, P (1998): The acoustic method as used in the abundance estimation of capelin (Mallotus villosus) and herring (Clupea harengus) in the Barents Sea. Fisheries Research, 34, 27-38, https://doi.org/10.1016/S0165-7836(97)00077-5
Totland, A; Godø, O (2001): BEAM – an interactive GIS application for acoustic abundance estimation. In T. Nishida, P.R. Kailola and C.E. Hollingworth (Eds): Proceedings of the First Symposium on geographic Information System (GIS) in Fisheries Science. Fishery GIS Research Group. Saitama, Japan
Funding:
Seventh Framework Programme (FP7), grant/award no. 264933: Basin Scale Analysis, Synthesis and Integration
Coverage:
Median Latitude: 67.396000 * Median Longitude: 1.560000 * South-bound Latitude: 60.500000 * West-bound Longitude: -13.000000 * North-bound Latitude: 73.500000 * East-bound Longitude: 17.000000
Date/Time Start: 2004-05-15T00:00:00 * Date/Time End: 2004-05-15T00:00:00
Event(s):
MPW-2004  * Comment: gridded data from North Atlantic surveys taken place in May 2004
Comment:
The research leading to these results received (partial/full) funding from the European Commission FP7 EURO-BASIN (European Basin-Scale Anal ysis, Synthesis, and Integration; Grant Agreement 264 933).
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
Event labelEvent
LATITUDELatitudeGeocode
LONGITUDELongitudeGeocode
DATE/TIMEDate/TimeGeocode
CodeCodeHuse, Geirunique identifier of the grid
AreaAreakm2Huse, Geirof the grid
Micromesistius poutassou abundance as Nautical Area Scattering CoefficientM. poutassou NASCm2/nmi2Huse, Geirafter MacLennan et al. (2002)
Micromesistius poutassou, biomassM. poutassou biomkg/km2Huse, GeirCalculated from nautical area scattering coefficient
Size:
500 data points

Data

Download dataset as tab-delimited text — use the following character encoding:


Event

Latitude

Longitude

Date/Time

Code

Area [km2]

M. poutassou NASC [m2/nmi2]

M. poutassou biom [kg/km2]
MPW-2004 60.5-52004-056000060010201121751050.0000000.034894
MPW-200460.5-72004-05600008001020112175863.0000000.029120
MPW-200460.5-92004-05600010001020112175733.0000000.024513
MPW-200460.5-112004-05600012001020112175285.0000000.009304
MPW-200460.5-132004-0560001400102011217539.0000000.001154
MPW-200461.5-32004-05610004001020111798170.0000000.005543
MPW-200461.5-52004-05610006001020188481517.0000000.050355
MPW-200461.5-72004-0561000800102012949764.0000000.025706
MPW-200461.5-92004-0561001000102018848527.0000000.017732
MPW-200461.5-112004-05610012001020111798174.0000000.006103
MPW-200461.5-132004-056100140010201117984.0000000.000140
MPW-200462.512004-05620000001020011417578.0000000.017607
MPW-200462.532004-0562000200102009133167.0000000.004605
MPW-200462.5-12004-05620002001020111417463.0000000.014564
MPW-200462.5-32004-05620004001020111417932.0000000.030274
MPW-200462.5-52004-0562000600102017992633.0000000.021776
MPW-200462.5-72004-0562000800102013425843.0000000.028860
MPW-200462.5-92004-0562001000102018562306.0000000.010469
MPW-200462.5-112004-05620012001020111417569.0000000.019453
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MPW-200463.532004-05630002001020011032492.0000000.013581
MPW-200463.5-12004-05630002001020111032480.0000000.015455
MPW-200463.552004-05630004001020011032506.0000000.013464
MPW-200463.5-32004-05630004001020111032542.0000000.017492
MPW-200463.5-52004-05630006001020111032673.0000000.022756
MPW-200463.5-72004-05630008001020111032413.0000000.014239
MPW-200463.5-92004-05630010001020111032400.0000000.013829
MPW-200463.5-112004-05630012001020111032341.0000000.011818
MPW-200463.5-132004-05630014001020111032545.0000000.018745
MPW-200464.512004-0564000000102001064483.0000000.002330
MPW-200464.532004-05640002001020010644124.0000000.003220
MPW-200464.5-12004-0564000200102011064499.0000000.003013
MPW-200464.552004-05640004001020010644297.0000000.007364
MPW-200464.5-32004-05640004001020110644172.0000000.005624
MPW-200464.5-52004-05640006001020110644220.0000000.007505
MPW-200464.5-72004-05640008001020110644376.0000000.012953
MPW-200464.5-92004-056400100010201106441550.0000000.054594
MPW-200464.5-112004-056400120010201106441183.0000000.042476
MPW-200464.5-132004-0564001400102013725123.0000000.004314
MPW-200465.512004-05650000001020010253389.0000000.011056
MPW-200465.532004-05650002001020010253904.0000000.025055
MPW-200465.5-12004-05650002001020110253128.0000000.003897
MPW-200465.552004-05650004001020010253329.0000000.008036
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MPW-200465.5-52004-05650006001020110253108.0000000.003712
MPW-200465.5-72004-056500080010201102535.0000000.000172
MPW-200465.5-92004-0565001000102011025331.0000000.001099
MPW-200465.5-112004-05650012001020110253252.0000000.008980
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MPW-200466.532004-0566000200102009859254.0000000.006873
MPW-200466.5-12004-0566000200102019859348.0000000.010375
MPW-200466.552004-0566000400102009859333.0000000.009225
MPW-200466.5-32004-0566000400102019859149.0000000.004600
MPW-200466.5-52004-056600060010201985928.0000000.000942
MPW-200466.5-72004-05660008001020198595.0000000.000169
MPW-200467.512004-0567000000102009462340.8384000.011138
MPW-200467.532004-0567000200102009462278.5275000.007940
MPW-200467.5-12004-0567000200102019462180.1086000.005732
MPW-200467.552004-0567000400102009462207.3834000.005912
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MPW-200467.572004-0567000600102009462171.7250000.005289
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MPW-200468.512004-056800000010200906271.8566380.002392
MPW-200468.532004-0568000200102009062171.2004390.005594
MPW-200468.5-12004-056800020010201906281.9065480.002773
MPW-200468.552004-056800040010200906276.7038090.002534
MPW-200468.5-32004-056800040010201906274.9860220.002557
MPW-200468.572004-056800060010200906291.0888420.003022
MPW-200468.5-52004-056800060010201906281.0000000.002728
MPW-200468.592004-0568000800102009062159.5040420.004521
MPW-200468.5-72004-056800080010201906229.0000000.000976
MPW-200468.5112004-0568001000102008609313.0000000.008514
MPW-200468.5132004-0568001200102003172900.2462000.025554
MPW-200469.512004-056900000010200865958.0000000.001913
MPW-200469.532004-0569000200102008659106.0000000.003554
MPW-200469.5-12004-0569000200102018659122.0000000.004112
MPW-200469.552004-056900040010200865961.0000000.002072
MPW-200469.5-32004-056900040010201865950.0000000.001705
MPW-200469.572004-056900060010200865997.0000000.003262
MPW-200469.5-52004-056900060010201865943.0000000.001448
MPW-200469.592004-056900080010200865965.0000000.002186
MPW-200469.5112004-0569001000102008659266.0000000.008945
MPW-200469.5132004-0569001200102008659683.0000000.017480
MPW-200469.5152004-05690014001020069271158.0000000.029727
MPW-200469.5172004-0569001600102002165765.0553150.019640
MPW-200470.512004-057000000010200825352.0201540.001789
MPW-200470.532004-057000020010200825380.2540760.002758
MPW-200470.5-12004-057000020010201825396.7776040.003370
MPW-200470.552004-057000040010200825380.8345660.002745
MPW-200470.5-32004-057000040010201825330.0681220.001047
MPW-200470.572004-057000060010200825377.9733660.002660
MPW-200470.5-52004-05700006001020182532.8032900.000096
MPW-200470.592004-057000080010200825378.5944250.002687
MPW-200470.5112004-0570001000102008253255.6775230.008670
MPW-200470.5132004-0570001200102008253184.5294130.005264
MPW-200470.5152004-0570001400102008253321.2784880.008332
MPW-200470.5172004-0570001600102007428934.3111980.024229
MPW-200471.512004-0571000000102007845101.0000000.003500
MPW-200471.532004-057100020010200784569.9214400.002412
MPW-200471.5-12004-05710002001020178452.0000000.000070
MPW-200471.552004-057100040010200784563.4360800.002174
MPW-200471.572004-057100060010200784545.9039600.001577
MPW-200471.592004-057100080010200784555.9919800.001928
MPW-200471.5112004-0571001000102007845110.0000000.003789
MPW-200471.5132004-0571001200102007845102.0000000.003487
MPW-200471.5152004-0571001400102007845159.7956000.005504
MPW-200471.5172004-0571001600102007845843.3965000.021872
MPW-200472.532004-057200020010200743580.1251500.002748
MPW-200472.552004-0572000400102007435541.0000000.018559
MPW-200472.572004-057200060010200743549.0000000.001687
MPW-200472.592004-057200080010200743568.0000000.002350
MPW-200472.5112004-0572001000102007435113.0000000.003918
MPW-200472.5132004-057200120010200743580.0000000.002760
MPW-200472.5152004-0572001400102007435257.7528320.008892
MPW-200472.5172004-057200160010200743513.8524100.000454
MPW-200473.552004-05730004001020070221.7906900.000062
MPW-200473.572004-057300060010200702221.0692900.000729
MPW-200473.592004-057300080010200702224.8382000.000859
MPW-200473.5112004-057300100010200702219.2495450.000670
MPW-200473.5132004-057300120010200702225.5164160.000882
MPW-200473.5152004-057300140010200702247.5793250.001644
MPW-200473.5172004-057300160010200667166.3866100.002294