The effective swept volume of a bottom trawl ...
No abstracts are to be cited without prior reference to the author.The reaction of individual fish towards an approaching trawling vessel has previously been measured using target-tracking methods. In this paper these measured velocities are fitted to a deterministic mean behaviour model and a diffu...
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ftdatacite:10.17895/ices.pub.25349734.v1 2024-04-28T08:14:17+00:00 The effective swept volume of a bottom trawl ... Handegard, Nils Olav Tjøstheim, Dag 2024 https://dx.doi.org/10.17895/ices.pub.25349734.v1 https://ices-library.figshare.com/articles/conference_contribution/The_effective_swept_volume_of_a_bottom_trawl/25349734/1 unknown ASC 2004 - R - Theme session https://ices-library.figshare.com/ICES-ASC-2004/groups https://dx.doi.org/10.17895/ices.pub.25349734 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.25349734.v110.17895/ices.pub.25349734 2024-04-02T12:00:32Z No abstracts are to be cited without prior reference to the author.The reaction of individual fish towards an approaching trawling vessel has previously been measured using target-tracking methods. In this paper these measured velocities are fitted to a deterministic mean behaviour model and a diffusion-advection model taking the random component into account. The output of the diffusion-advection model is used to estimate the probability of a fish to be caught by the bottom trawl. For typical depths in the Barents Sea, 200 - 350 m, and for immature Cod feeding on capelin, a mean fishing height of about 10 metres is found, and the effect of horizontal herding from the warp is shown. The effect of random fish movement is visualised by the different results from the two models. ... Article in Journal/Newspaper Barents Sea DataCite Metadata Store (German National Library of Science and Technology) |
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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, Nils Olav Tjøstheim, Dag The effective swept volume of a bottom trawl ... |
topic_facet |
Fisheries and aquaculture Technologies and data |
description |
No abstracts are to be cited without prior reference to the author.The reaction of individual fish towards an approaching trawling vessel has previously been measured using target-tracking methods. In this paper these measured velocities are fitted to a deterministic mean behaviour model and a diffusion-advection model taking the random component into account. The output of the diffusion-advection model is used to estimate the probability of a fish to be caught by the bottom trawl. For typical depths in the Barents Sea, 200 - 350 m, and for immature Cod feeding on capelin, a mean fishing height of about 10 metres is found, and the effect of horizontal herding from the warp is shown. The effect of random fish movement is visualised by the different results from the two models. ... |
format |
Article in Journal/Newspaper |
author |
Handegard, Nils Olav Tjøstheim, Dag |
author_facet |
Handegard, Nils Olav Tjøstheim, Dag |
author_sort |
Handegard, Nils Olav |
title |
The effective swept volume of a bottom trawl ... |
title_short |
The effective swept volume of a bottom trawl ... |
title_full |
The effective swept volume of a bottom trawl ... |
title_fullStr |
The effective swept volume of a bottom trawl ... |
title_full_unstemmed |
The effective swept volume of a bottom trawl ... |
title_sort |
effective swept volume of a bottom trawl ... |
publisher |
ASC 2004 - R - Theme session |
publishDate |
2024 |
url |
https://dx.doi.org/10.17895/ices.pub.25349734.v1 https://ices-library.figshare.com/articles/conference_contribution/The_effective_swept_volume_of_a_bottom_trawl/25349734/1 |
genre |
Barents Sea |
genre_facet |
Barents Sea |
op_relation |
https://ices-library.figshare.com/ICES-ASC-2004/groups https://dx.doi.org/10.17895/ices.pub.25349734 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.25349734.v110.17895/ices.pub.25349734 |
_version_ |
1797580415074041856 |