Predicting the effect of seine rope layout pattern and haul-in procedure on the effectiveness of demersal seine fishing: a computer simulation-based approach

Demersal Seining is an active fishing method applying two long seine ropes and a seine net. Demersal seining relies on fish responding to the seine rope as it moves during the fishing process. The seine ropes and net are deployed in a specific pattern encircling an area on the seabed. In some varian...

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Published in:PLOS ONE
Main Authors: Madsen, Nina, Aarsæther, Karl Gunnar, Herrmann, Bent
Format: Article in Journal/Newspaper
Language:English
Published: 2017
Subjects:
Online Access:http://hdl.handle.net/11250/2466749
https://doi.org/10.1371/journal.pone.0182609
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spelling ftsintef:oai:sintef.brage.unit.no:11250/2466749 2023-05-15T16:19:26+02:00 Predicting the effect of seine rope layout pattern and haul-in procedure on the effectiveness of demersal seine fishing: a computer simulation-based approach Madsen, Nina Aarsæther, Karl Gunnar Herrmann, Bent 2017-08-03 application/pdf http://hdl.handle.net/11250/2466749 https://doi.org/10.1371/journal.pone.0182609 eng eng PLoS ONE. 2017, 12 (8:e0182609), 1-17. urn:issn:1932-6203 http://hdl.handle.net/11250/2466749 https://doi.org/10.1371/journal.pone.0182609 cristin:1514129 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no Copyright: © 2017 Madsen et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. CC-BY 1-17 12 PLoS ONE 8:e0182609 Journal article Peer reviewed 2017 ftsintef https://doi.org/10.1371/journal.pone.0182609 2021-08-04T11:59:41Z Demersal Seining is an active fishing method applying two long seine ropes and a seine net. Demersal seining relies on fish responding to the seine rope as it moves during the fishing process. The seine ropes and net are deployed in a specific pattern encircling an area on the seabed. In some variants of demersal seining the haul-in procedure includes a towing phase where the fishing vessel moves forward before starting to winch in the seine ropes. The initial seine rope encircled area, the gradual change in it during the haul-in process and the fish's reaction to the moving seine ropes play an important role in the catch performance of demersal seine fishing. The current study investigates this subject by applying computer simulation models for demersal seine fishing. The demersal seine fishing is dynamic in nature and therefore a dynamic model, SeineSolver is applied for simulating the physical behaviour of the seine ropes during the fishing process. Information about the seine rope behaviour is used as input to another simulation tool, SeineFish that predicts the catch performance of the demersal seine fishing process. SeineFish implements a simple model for how fish at the seabed reacts to an approaching seine rope. Here, the SeineSolver and SeineFish tools are applied to investigate catching performance for a Norwegian demersal seine fishery targeting cod (Gadus morhua) in the coastal zone. The effect of seine rope layout pattern and the duration of the towing phase are investigated. Among the four different layout patterns investigated, the square layout pattern was predicted to perform best; catching 69%-86% more fish than would be obtained with the rectangular layout pattern. Inclusion of a towing phase in the fishing process was found to increase the catch performance for all layout patterns. For the square layout pattern, inclusion of a towing phase of 15 or 35 minutes increased the catch performance by respectively 37% and 48% compared to fishing without a towing phase. These results highlights the importance of the selected seine rope layout pattern and the duration of the towing phase when fishermen try to maximize the catch performance of their fishery. To our knowledge this is the first time the combination of models for the physical behaviour of seine ropes and for fish behaviour in response to seine rope movements have been applied to predict catch performance for demersal seining. publishedVersion Article in Journal/Newspaper Gadus morhua SINTEF Open (Brage) PLOS ONE 12 8 e0182609
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description Demersal Seining is an active fishing method applying two long seine ropes and a seine net. Demersal seining relies on fish responding to the seine rope as it moves during the fishing process. The seine ropes and net are deployed in a specific pattern encircling an area on the seabed. In some variants of demersal seining the haul-in procedure includes a towing phase where the fishing vessel moves forward before starting to winch in the seine ropes. The initial seine rope encircled area, the gradual change in it during the haul-in process and the fish's reaction to the moving seine ropes play an important role in the catch performance of demersal seine fishing. The current study investigates this subject by applying computer simulation models for demersal seine fishing. The demersal seine fishing is dynamic in nature and therefore a dynamic model, SeineSolver is applied for simulating the physical behaviour of the seine ropes during the fishing process. Information about the seine rope behaviour is used as input to another simulation tool, SeineFish that predicts the catch performance of the demersal seine fishing process. SeineFish implements a simple model for how fish at the seabed reacts to an approaching seine rope. Here, the SeineSolver and SeineFish tools are applied to investigate catching performance for a Norwegian demersal seine fishery targeting cod (Gadus morhua) in the coastal zone. The effect of seine rope layout pattern and the duration of the towing phase are investigated. Among the four different layout patterns investigated, the square layout pattern was predicted to perform best; catching 69%-86% more fish than would be obtained with the rectangular layout pattern. Inclusion of a towing phase in the fishing process was found to increase the catch performance for all layout patterns. For the square layout pattern, inclusion of a towing phase of 15 or 35 minutes increased the catch performance by respectively 37% and 48% compared to fishing without a towing phase. These results highlights the importance of the selected seine rope layout pattern and the duration of the towing phase when fishermen try to maximize the catch performance of their fishery. To our knowledge this is the first time the combination of models for the physical behaviour of seine ropes and for fish behaviour in response to seine rope movements have been applied to predict catch performance for demersal seining. publishedVersion
format Article in Journal/Newspaper
author Madsen, Nina
Aarsæther, Karl Gunnar
Herrmann, Bent
spellingShingle Madsen, Nina
Aarsæther, Karl Gunnar
Herrmann, Bent
Predicting the effect of seine rope layout pattern and haul-in procedure on the effectiveness of demersal seine fishing: a computer simulation-based approach
author_facet Madsen, Nina
Aarsæther, Karl Gunnar
Herrmann, Bent
author_sort Madsen, Nina
title Predicting the effect of seine rope layout pattern and haul-in procedure on the effectiveness of demersal seine fishing: a computer simulation-based approach
title_short Predicting the effect of seine rope layout pattern and haul-in procedure on the effectiveness of demersal seine fishing: a computer simulation-based approach
title_full Predicting the effect of seine rope layout pattern and haul-in procedure on the effectiveness of demersal seine fishing: a computer simulation-based approach
title_fullStr Predicting the effect of seine rope layout pattern and haul-in procedure on the effectiveness of demersal seine fishing: a computer simulation-based approach
title_full_unstemmed Predicting the effect of seine rope layout pattern and haul-in procedure on the effectiveness of demersal seine fishing: a computer simulation-based approach
title_sort predicting the effect of seine rope layout pattern and haul-in procedure on the effectiveness of demersal seine fishing: a computer simulation-based approach
publishDate 2017
url http://hdl.handle.net/11250/2466749
https://doi.org/10.1371/journal.pone.0182609
genre Gadus morhua
genre_facet Gadus morhua
op_source 1-17
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PLoS ONE
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http://hdl.handle.net/11250/2466749
https://doi.org/10.1371/journal.pone.0182609
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op_rights Navngivelse 4.0 Internasjonal
http://creativecommons.org/licenses/by/4.0/deed.no
Copyright: © 2017 Madsen et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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