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 2009
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 reco...
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ftdatacite:10.1594/pangaea.827221 2023-05-15T17:38:35+02:00 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 2009 Huse, Geir 2014 text/tab-separated-values https://dx.doi.org/10.1594/pangaea.827221 https://doi.pangaea.de/10.1594/PANGAEA.827221 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1594/pangaea.831204 https://dx.doi.org/10.5194/essd-7-35-2015 https://dx.doi.org/10.1121/1.396131 https://dx.doi.org/10.1016/s0165-7836(97)00077-5 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Event label LATITUDE LONGITUDE DATE/TIME Code Area Clupea harengus abundance as Nautical Area Scattering Coefficient Clupea harengus, biomass after MacLennan et al. 2002 Calculated from nautical area scattering coefficient Basin Scale Analysis, Synthesis and Integration EURO-BASIN dataset Dataset 2014 ftdatacite https://doi.org/10.1594/pangaea.827221 https://doi.org/10.1594/pangaea.831204 https://doi.org/10.5194/essd-7-35-2015 https://doi.org/10.1121/1.396131 https://doi.org/10.1016/s0165-7836(97)00077-5 2022-02-08T16:24:46Z 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. : 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). Dataset North East Atlantic DataCite Metadata Store (German National Library of Science and Technology) Foote ENVELOPE(-66.175,-66.175,-66.197,-66.197) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Event label LATITUDE LONGITUDE DATE/TIME Code Area Clupea harengus abundance as Nautical Area Scattering Coefficient Clupea harengus, biomass after MacLennan et al. 2002 Calculated from nautical area scattering coefficient Basin Scale Analysis, Synthesis and Integration EURO-BASIN |
spellingShingle |
Event label LATITUDE LONGITUDE DATE/TIME Code Area Clupea harengus abundance as Nautical Area Scattering Coefficient Clupea harengus, biomass after MacLennan et al. 2002 Calculated from nautical area scattering coefficient Basin Scale Analysis, Synthesis and Integration EURO-BASIN Huse, Geir 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 2009 |
topic_facet |
Event label LATITUDE LONGITUDE DATE/TIME Code Area Clupea harengus abundance as Nautical Area Scattering Coefficient Clupea harengus, biomass after MacLennan et al. 2002 Calculated from nautical area scattering coefficient Basin Scale Analysis, Synthesis and Integration EURO-BASIN |
description |
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. : 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). |
format |
Dataset |
author |
Huse, Geir |
author_facet |
Huse, Geir |
author_sort |
Huse, Geir |
title |
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 2009 |
title_short |
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 2009 |
title_full |
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 2009 |
title_fullStr |
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 2009 |
title_full_unstemmed |
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 2009 |
title_sort |
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 2009 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2014 |
url |
https://dx.doi.org/10.1594/pangaea.827221 https://doi.pangaea.de/10.1594/PANGAEA.827221 |
long_lat |
ENVELOPE(-66.175,-66.175,-66.197,-66.197) |
geographic |
Foote |
geographic_facet |
Foote |
genre |
North East Atlantic |
genre_facet |
North East Atlantic |
op_relation |
https://dx.doi.org/10.1594/pangaea.831204 https://dx.doi.org/10.5194/essd-7-35-2015 https://dx.doi.org/10.1121/1.396131 https://dx.doi.org/10.1016/s0165-7836(97)00077-5 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.827221 https://doi.org/10.1594/pangaea.831204 https://doi.org/10.5194/essd-7-35-2015 https://doi.org/10.1121/1.396131 https://doi.org/10.1016/s0165-7836(97)00077-5 |
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