Understanding the effect of design parameters on the filtration efficiency of trawls intended for commercial harvesting of zooplankton
A major challenge for the aquaculture sector is access to sustainable and cost-effective raw materials for feed. Copepods (Calanus spp.) have potential to meet this need for large volumes of marine raw materials to enable sustainable growth of aquaculture production worldwide. However, the lack of a...
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Format: | Article in Journal/Newspaper |
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Online Access: | https://hdl.handle.net/10037/31690 https://doi.org/10.1016/j.oceaneng.2023.116141 |
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ftunivtroemsoe:oai:munin.uit.no:10037/31690 2023-12-03T10:27:40+01:00 Understanding the effect of design parameters on the filtration efficiency of trawls intended for commercial harvesting of zooplankton Grimaldo, Eduardo Herrmann, Bent Kostak, Enis Noyan Brinkhof, Jesse Vallevik 2023-11-01 https://hdl.handle.net/10037/31690 https://doi.org/10.1016/j.oceaneng.2023.116141 eng eng Elsevier Ocean Engineering Grimaldo Ed, Herrmann B, Kostak EN, Brinkhof J. Understanding the effect of design parameters on the filtration efficiency of trawls intended for commercial harvesting of zooplankton. Ocean Engineering. 2023;288(2) FRIDAID 2191389 https://doi.org/10.1016/j.oceaneng.2023.116141 0029-8018 1873-5258 https://hdl.handle.net/10037/31690 Attribution 4.0 International (CC BY 4.0) openAccess Copyright 2023 The Author(s) https://creativecommons.org/licenses/by/4.0 Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2023 ftunivtroemsoe https://doi.org/10.1016/j.oceaneng.2023.116141 2023-11-09T00:08:06Z A major challenge for the aquaculture sector is access to sustainable and cost-effective raw materials for feed. Copepods (Calanus spp.) have potential to meet this need for large volumes of marine raw materials to enable sustainable growth of aquaculture production worldwide. However, the lack of an energy- and catch-efficient trawl technology has limited the development of this fishery in the Northeast Atlantic. Therefore, the goal of this study was to develop a next generation trawl for harvesting zooplankton that was less energy demanding and more catch efficient than current trawl designs. We assessed the filtration efficiency of low porosity nets with different solidities and studied the effects of design parameters (mesh opening, twine thickness, porosity, taper angle) at various flow velocities in a flume tank. We found that the filtration efficiency for a square meshed net increased with increasing velocity and decreasing solidity and taper angle. A large open area ratio (the ratio between the open netting area and the net’s mouth area) improved the filtration efficiency at towing velocities below 0.5 ms − 1 . These results provided an indication of the initial filtration efficiency of the net designs (i.e., before any clogging occurs) but not of the sustained filtration efficiency. Article in Journal/Newspaper Northeast Atlantic Copepods University of Tromsø: Munin Open Research Archive Ocean Engineering 288 116141 |
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Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
description |
A major challenge for the aquaculture sector is access to sustainable and cost-effective raw materials for feed. Copepods (Calanus spp.) have potential to meet this need for large volumes of marine raw materials to enable sustainable growth of aquaculture production worldwide. However, the lack of an energy- and catch-efficient trawl technology has limited the development of this fishery in the Northeast Atlantic. Therefore, the goal of this study was to develop a next generation trawl for harvesting zooplankton that was less energy demanding and more catch efficient than current trawl designs. We assessed the filtration efficiency of low porosity nets with different solidities and studied the effects of design parameters (mesh opening, twine thickness, porosity, taper angle) at various flow velocities in a flume tank. We found that the filtration efficiency for a square meshed net increased with increasing velocity and decreasing solidity and taper angle. A large open area ratio (the ratio between the open netting area and the net’s mouth area) improved the filtration efficiency at towing velocities below 0.5 ms − 1 . These results provided an indication of the initial filtration efficiency of the net designs (i.e., before any clogging occurs) but not of the sustained filtration efficiency. |
format |
Article in Journal/Newspaper |
author |
Grimaldo, Eduardo Herrmann, Bent Kostak, Enis Noyan Brinkhof, Jesse Vallevik |
spellingShingle |
Grimaldo, Eduardo Herrmann, Bent Kostak, Enis Noyan Brinkhof, Jesse Vallevik Understanding the effect of design parameters on the filtration efficiency of trawls intended for commercial harvesting of zooplankton |
author_facet |
Grimaldo, Eduardo Herrmann, Bent Kostak, Enis Noyan Brinkhof, Jesse Vallevik |
author_sort |
Grimaldo, Eduardo |
title |
Understanding the effect of design parameters on the filtration efficiency of trawls intended for commercial harvesting of zooplankton |
title_short |
Understanding the effect of design parameters on the filtration efficiency of trawls intended for commercial harvesting of zooplankton |
title_full |
Understanding the effect of design parameters on the filtration efficiency of trawls intended for commercial harvesting of zooplankton |
title_fullStr |
Understanding the effect of design parameters on the filtration efficiency of trawls intended for commercial harvesting of zooplankton |
title_full_unstemmed |
Understanding the effect of design parameters on the filtration efficiency of trawls intended for commercial harvesting of zooplankton |
title_sort |
understanding the effect of design parameters on the filtration efficiency of trawls intended for commercial harvesting of zooplankton |
publisher |
Elsevier |
publishDate |
2023 |
url |
https://hdl.handle.net/10037/31690 https://doi.org/10.1016/j.oceaneng.2023.116141 |
genre |
Northeast Atlantic Copepods |
genre_facet |
Northeast Atlantic Copepods |
op_relation |
Ocean Engineering Grimaldo Ed, Herrmann B, Kostak EN, Brinkhof J. Understanding the effect of design parameters on the filtration efficiency of trawls intended for commercial harvesting of zooplankton. Ocean Engineering. 2023;288(2) FRIDAID 2191389 https://doi.org/10.1016/j.oceaneng.2023.116141 0029-8018 1873-5258 https://hdl.handle.net/10037/31690 |
op_rights |
Attribution 4.0 International (CC BY 4.0) openAccess Copyright 2023 The Author(s) https://creativecommons.org/licenses/by/4.0 |
op_doi |
https://doi.org/10.1016/j.oceaneng.2023.116141 |
container_title |
Ocean Engineering |
container_volume |
288 |
container_start_page |
116141 |
_version_ |
1784277521640980480 |