Not logged in
PANGAEA.
Data Publisher for Earth & Environmental Science

Huse, Geir (2014): Spatially explicit estimates of length and biomass of Clupea harengus (Norwegian spring spawning herring) from acoustic and trawl surveys in the North-East Atlantic in May 2008 [dataset]. Institute of Marine Research, Bergen, PANGAEA, https://doi.org/10.1594/PANGAEA.827194, 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

Always quote citation above when using data! You can download the citation in several formats below.

RIS CitationBibTeX Citation

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
Project(s):
Basin Scale Analysis, Synthesis and Integration (EURO-BASIN)
Funding:
Seventh Framework Programme (FP7), grant/award no. 264933: Basin Scale Analysis, Synthesis and Integration
Coverage:
Median Latitude: 67.477778 * Median Longitude: 3.022222 * South-bound Latitude: 62.500000 * West-bound Longitude: -13.000000 * North-bound Latitude: 73.500000 * East-bound Longitude: 17.000000
Date/Time Start: 2008-05-15T00:00:00 * Date/Time End: 2008-05-15T00:00:00
Event(s):
CHG-2008  * Comment: gridded data from North Atlantic surveys taken place in May 2008
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
1 Event labelEvent
2 LATITUDELatitudeGeocode
3 LONGITUDELongitudeGeocode
4 DATE/TIMEDate/TimeGeocode
5 CodeCodeHuse, Geirunique identifier of the grid
6 AreaAreakm2Huse, Geirof the grid
7 Clupea harengus abundance as Nautical Area Scattering CoefficientC. harengus NASCm2/nmi2Huse, Geirafter MacLennan et al. (2002)
8 Clupea harengus, biomassC. harengus biomkg/km2Huse, GeirCalculated from nautical area scattering coefficient
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
360 data points

Data

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

1 
Event		2 
Latitude		3 
Longitude		4 
Date/Time		5 
Code		6 
Area [km2]		7 
C. harengus NASC [m2/nmi2]		8 
C. harengus biom [kg/km2]
CHG-2008 62.51.02008-0562000000102001141717.00001281.3366
CHG-200862.5-1.02008-0562000200102011141782.00006488.0897
CHG-200862.5-3.02008-0562000400102011141723.00001775.5213
CHG-200862.5-5.02008-05620006001020151373.0000234.0681
CHG-200863.51.02008-0563000000102001103257.00004419.0565
CHG-200863.53.02008-05630002001020011032107.00008315.0699
CHG-200863.5-1.02008-05630002001020111032118.00009262.2598
CHG-200863.55.02008-0563000400102001103243.00003284.0303
CHG-200863.5-3.02008-05630004001020111032292.000022541.4094
CHG-200863.5-5.02008-05630006001020111032370.000028652.3588
CHG-200863.5-7.02008-05630008001020111032188.000014603.3256
CHG-200863.5-9.02008-05630010001020111032149.000011573.9109
CHG-200864.51.02008-0564000000102001064433.00002568.8556
CHG-200864.53.02008-0564000200102001064419.00001452.2044
CHG-200864.5-1.02008-05640002001020110644162.000012925.2533
CHG-200864.55.02008-0564000400102001064435.00002675.1136
CHG-200864.5-3.02008-05640004001020110644131.000010177.5422
CHG-200864.5-5.02008-05640006001020110644110.00008820.6144
CHG-200864.5-7.02008-05640008001020110644379.000030738.3751
CHG-200864.5-9.02008-05640010001020110644224.000017951.1969
CHG-200864.5-11.02008-05640012001020110644190.000014926.1619
CHG-200865.51.02008-05650000001020010253349.000026711.8521
CHG-200865.53.02008-05650002001020010253149.000011303.6139
CHG-200865.5-1.02008-05650002001020110253708.000055182.1520
CHG-200865.55.02008-0565000400102001025317.00001284.1904
CHG-200865.5-3.02008-05650004001020110253159.000012467.4985
CHG-200865.57.02008-0565000600102001025323.00001737.4345
CHG-200865.5-5.02008-05650006001020110253379.000030439.6709
CHG-200865.59.02008-056500080010200102533.0000226.6220
CHG-200865.5-7.02008-05650008001020110253459.000037556.6540
CHG-200865.5-9.02008-05650010001020110253405.000032763.3460
CHG-200865.5-11.02008-05650012001020110253198.000015789.4904
CHG-200866.51.02008-0566000000102009859361.000027819.0681
CHG-200866.53.02008-056600020010200985942.00003227.7665
CHG-200866.5-1.02008-05660002001020198591096.000085377.1374
CHG-200866.55.02008-05660004001020098597.0000534.9301
CHG-200866.5-3.02008-0566000400102019859580.000044284.4321
CHG-200866.57.02008-056600060010200985970.00005350.2271
CHG-200866.5-5.02008-0566000600102019859204.000016635.4834
CHG-200866.59.02008-056600080010200985917.00001267.4956
CHG-200866.5-7.02008-0566000800102019859339.000027577.1462
CHG-200866.5-9.02008-056600100010201985922.00001784.1409
CHG-200866.5-11.02008-05660012001020198599.0000721.0775
CHG-200866.5-13.02008-05660014001020124655.0000402.2335
CHG-200867.51.02008-0567000000102009462287.000022221.5958
CHG-200867.53.02008-05670002001020094627.0000538.2557
CHG-200867.5-1.02008-0567000200102019462820.000064089.7496
CHG-200867.5-3.02008-0567000400102019462101.00008033.3197
CHG-200867.57.02008-056700060010200946214.00001053.8643
CHG-200867.5-5.02008-05670006001020194624.0000326.3745
CHG-200867.59.02008-0567000800102009462109.00008116.9482
CHG-200867.511.02008-05670010001020066233.0000221.7268
CHG-200868.51.02008-0568000000102009062146.000011438.8177
CHG-200868.53.02008-0568000200102009062291.000022177.9499
CHG-200868.5-1.02008-0568000200102019062505.000039832.8334
CHG-200868.55.02008-056800040010200906282.00006261.9307
CHG-200868.5-3.02008-0568000400102019062334.000026852.7694
CHG-200868.57.02008-056800060010200906220.00001478.3518
CHG-200868.5-5.02008-056800060010201906214.00001125.5649
CHG-200868.59.02008-056800080010200906231.00002230.9755
CHG-200868.511.02008-0568001000102008609120.00008735.4106
CHG-200868.513.02008-056800120010200271874.00005454.7874
CHG-200869.51.02008-05690000001020086591.000078.1363
CHG-200869.53.02008-056900020010200865929.00002265.9930
CHG-200869.55.02008-056900040010200865914.00001081.3337
CHG-200869.57.02008-0569000600102008659225.000016798.0810
CHG-200869.59.02008-0569000800102008659462.000033093.2615
CHG-200869.511.02008-0569001000102008659192.000013651.3221
CHG-200869.513.02008-056900120010200865952.00003718.0897
CHG-200869.515.02008-05690014001020077932.0000146.2405
CHG-200870.57.02008-057000060010200825385.00006506.2784
CHG-200870.59.02008-057000080010200825367.00004923.4071
CHG-200870.511.02008-057000100010200825388.00006216.6424
CHG-200870.513.02008-0570001200102008253295.000019730.9872
CHG-200870.515.02008-057000140010200825381.00005738.3605
CHG-200870.517.02008-05700016001020082531.000070.8445
CHG-200871.57.02008-057100060010200784520.00001519.4234
CHG-200871.59.02008-057100080010200784548.00003575.2621
CHG-200871.511.02008-057100100010200784515.00001090.8154
CHG-200871.513.02008-057100120010200784516.00001113.9167
CHG-200871.515.02008-057100140010200784544.00003063.2673
CHG-200871.517.02008-0571001600102007845125.00008780.1543
CHG-200872.57.02008-05720006001020074354.0000294.6651
CHG-200872.59.02008-05720008001020074353.0000221.6861
CHG-200872.511.02008-057200100010200743512.0000886.7385
CHG-200872.513.02008-057200120010200743516.00001161.9132
CHG-200872.515.02008-057200140010200743511.0000782.8189
CHG-200873.59.02008-05730008001020070221.000073.8031
CHG-200873.511.02008-05730010001020070223.0000221.8142
CHG-200873.513.02008-05730012001020070223.0000219.4351