A vessel specific bias in echo sounder recordings during trawling ...
No abstracts are to be cited without prior reference to the author.We have analysed acoustic data recorded by RV 'Johan Hjort' and (old) RV 'G.O.Sars' during the bottom trawl survey in the Barents Sea from 1997 through 2002. The observed acoustic density of demersal fish during t...
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2024
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ftdatacite:10.17895/ices.pub.25349836 2024-04-28T08:14:16+00:00 A vessel specific bias in echo sounder recordings during trawling ... Handegard Olav, Nils Hjellvik Vidar 2024 https://dx.doi.org/10.17895/ices.pub.25349836 https://ices-library.figshare.com/articles/conference_contribution/A_vessel_specific_bias_in_echo_sounder_recordings_during_trawling/25349836 unknown ASC 2004 - R - Theme session https://ices-library.figshare.com/ICES-ASC-2004/groups ICES Custom Licence https://www.ices.dk/Pages/library_policies.aspx Fisheries and aquaculture Technologies and data article Other CreativeWork Conference contribution 2024 ftdatacite https://doi.org/10.17895/ices.pub.25349836 2024-04-02T12:00:32Z No abstracts are to be cited without prior reference to the author.We have analysed acoustic data recorded by RV 'Johan Hjort' and (old) RV 'G.O.Sars' during the bottom trawl survey in the Barents Sea from 1997 through 2002. The observed acoustic density of demersal fish during trawling was compared to that just before and just after trawling. For RV 'G.O.Sars', the echo abundance was on average about 12 % lower before and after trawling than during trawling, and the difference was highly significant and consistent between years. For RV 'Johan Hjort' the average difference was about 1%, which was not significant (Figure 1). ... Article in Journal/Newspaper Barents Sea DataCite Metadata Store (German National Library of Science and Technology) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Fisheries and aquaculture Technologies and data |
spellingShingle |
Fisheries and aquaculture Technologies and data Handegard Olav, Nils Hjellvik Vidar A vessel specific bias in echo sounder recordings during trawling ... |
topic_facet |
Fisheries and aquaculture Technologies and data |
description |
No abstracts are to be cited without prior reference to the author.We have analysed acoustic data recorded by RV 'Johan Hjort' and (old) RV 'G.O.Sars' during the bottom trawl survey in the Barents Sea from 1997 through 2002. The observed acoustic density of demersal fish during trawling was compared to that just before and just after trawling. For RV 'G.O.Sars', the echo abundance was on average about 12 % lower before and after trawling than during trawling, and the difference was highly significant and consistent between years. For RV 'Johan Hjort' the average difference was about 1%, which was not significant (Figure 1). ... |
format |
Article in Journal/Newspaper |
author |
Handegard Olav, Nils Hjellvik Vidar |
author_facet |
Handegard Olav, Nils Hjellvik Vidar |
author_sort |
Handegard |
title |
A vessel specific bias in echo sounder recordings during trawling ... |
title_short |
A vessel specific bias in echo sounder recordings during trawling ... |
title_full |
A vessel specific bias in echo sounder recordings during trawling ... |
title_fullStr |
A vessel specific bias in echo sounder recordings during trawling ... |
title_full_unstemmed |
A vessel specific bias in echo sounder recordings during trawling ... |
title_sort |
vessel specific bias in echo sounder recordings during trawling ... |
publisher |
ASC 2004 - R - Theme session |
publishDate |
2024 |
url |
https://dx.doi.org/10.17895/ices.pub.25349836 https://ices-library.figshare.com/articles/conference_contribution/A_vessel_specific_bias_in_echo_sounder_recordings_during_trawling/25349836 |
genre |
Barents Sea |
genre_facet |
Barents Sea |
op_relation |
https://ices-library.figshare.com/ICES-ASC-2004/groups |
op_rights |
ICES Custom Licence https://www.ices.dk/Pages/library_policies.aspx |
op_doi |
https://doi.org/10.17895/ices.pub.25349836 |
_version_ |
1797580411083161600 |