Using acoustically visible gillnets to reduce bycatch of a small cetacean: first pilot trials in a commercial fishery
Bycatch of protected species, particularly small cetaceans, in gillnets is a worldwide concern. One hypothesis for this is that echolocating cetaceans entangle because they do not perceive conventional gillnets as impenetrable barriers, owing to the gillnet’s faint echo. A gillnet modified for impro...
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Format: | Article in Journal/Newspaper |
Language: | English |
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2021
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Online Access: | https://orbit.dtu.dk/en/publications/cd569778-bec6-40a4-8ae9-5394700442a5 https://doi.org/10.1016/j.fishres.2021.106088 |
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ftdtupubl:oai:pure.atira.dk:publications/cd569778-bec6-40a4-8ae9-5394700442a5 2024-06-23T07:56:11+00:00 Using acoustically visible gillnets to reduce bycatch of a small cetacean: first pilot trials in a commercial fishery Kratzer, Isabella Maria Friederike Brooks, Mollie Elizabeth Bilgin, Sabri Özdemir, Süleyman Kindt-Larsen, Lotte Larsen, Finn Stepputtis, Daniel 2021 https://orbit.dtu.dk/en/publications/cd569778-bec6-40a4-8ae9-5394700442a5 https://doi.org/10.1016/j.fishres.2021.106088 eng eng https://orbit.dtu.dk/en/publications/cd569778-bec6-40a4-8ae9-5394700442a5 info:eu-repo/semantics/closedAccess Kratzer , I M F , Brooks , M E , Bilgin , S , Özdemir , S , Kindt-Larsen , L , Larsen , F & Stepputtis , D 2021 , ' Using acoustically visible gillnets to reduce bycatch of a small cetacean: first pilot trials in a commercial fishery ' , Fisheries Research , vol. 243 , 106088 . https://doi.org/10.1016/j.fishres.2021.106088 Bycatch Gillnet modification Phocoena phocoena Turbot fishery Raja clavata /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water article 2021 ftdtupubl https://doi.org/10.1016/j.fishres.2021.106088 2024-06-11T15:02:08Z Bycatch of protected species, particularly small cetaceans, in gillnets is a worldwide concern. One hypothesis for this is that echolocating cetaceans entangle because they do not perceive conventional gillnets as impenetrable barriers, owing to the gillnet’s faint echo. A gillnet modified for improved acoustical visibility was tested in a first pilot trial in a commercial gillnet fishery targeting turbot ( Scophthalmus maeoticus ) on the Turkish Black Sea coast. This study is the first demonstration of the viability of using a gillnet equipped with small acrylic glass spheres to reduce bycatch of harbor porpoises in a commercial fishery and provides the basis for full-scale sea trials of the gear in commercial fisheries through a power analysis. In these pilot experiments, the focus lied on the handling of the gear and identification of requirements for a full-scale trial, but results include promising bycatch data for an endangered echolocating marine mammal ( Phocoena phocoena ) and no reduction in catch efficiency of a bottom-dwelling, vulnerable species ( Raja clavata ). Article in Journal/Newspaper Phocoena phocoena Turbot Technical University of Denmark: DTU Orbit Lied ENVELOPE(65.532,65.532,-70.502,-70.502) Fisheries Research 243 106088 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
Bycatch Gillnet modification Phocoena phocoena Turbot fishery Raja clavata /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
spellingShingle |
Bycatch Gillnet modification Phocoena phocoena Turbot fishery Raja clavata /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water Kratzer, Isabella Maria Friederike Brooks, Mollie Elizabeth Bilgin, Sabri Özdemir, Süleyman Kindt-Larsen, Lotte Larsen, Finn Stepputtis, Daniel Using acoustically visible gillnets to reduce bycatch of a small cetacean: first pilot trials in a commercial fishery |
topic_facet |
Bycatch Gillnet modification Phocoena phocoena Turbot fishery Raja clavata /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
description |
Bycatch of protected species, particularly small cetaceans, in gillnets is a worldwide concern. One hypothesis for this is that echolocating cetaceans entangle because they do not perceive conventional gillnets as impenetrable barriers, owing to the gillnet’s faint echo. A gillnet modified for improved acoustical visibility was tested in a first pilot trial in a commercial gillnet fishery targeting turbot ( Scophthalmus maeoticus ) on the Turkish Black Sea coast. This study is the first demonstration of the viability of using a gillnet equipped with small acrylic glass spheres to reduce bycatch of harbor porpoises in a commercial fishery and provides the basis for full-scale sea trials of the gear in commercial fisheries through a power analysis. In these pilot experiments, the focus lied on the handling of the gear and identification of requirements for a full-scale trial, but results include promising bycatch data for an endangered echolocating marine mammal ( Phocoena phocoena ) and no reduction in catch efficiency of a bottom-dwelling, vulnerable species ( Raja clavata ). |
format |
Article in Journal/Newspaper |
author |
Kratzer, Isabella Maria Friederike Brooks, Mollie Elizabeth Bilgin, Sabri Özdemir, Süleyman Kindt-Larsen, Lotte Larsen, Finn Stepputtis, Daniel |
author_facet |
Kratzer, Isabella Maria Friederike Brooks, Mollie Elizabeth Bilgin, Sabri Özdemir, Süleyman Kindt-Larsen, Lotte Larsen, Finn Stepputtis, Daniel |
author_sort |
Kratzer, Isabella Maria Friederike |
title |
Using acoustically visible gillnets to reduce bycatch of a small cetacean: first pilot trials in a commercial fishery |
title_short |
Using acoustically visible gillnets to reduce bycatch of a small cetacean: first pilot trials in a commercial fishery |
title_full |
Using acoustically visible gillnets to reduce bycatch of a small cetacean: first pilot trials in a commercial fishery |
title_fullStr |
Using acoustically visible gillnets to reduce bycatch of a small cetacean: first pilot trials in a commercial fishery |
title_full_unstemmed |
Using acoustically visible gillnets to reduce bycatch of a small cetacean: first pilot trials in a commercial fishery |
title_sort |
using acoustically visible gillnets to reduce bycatch of a small cetacean: first pilot trials in a commercial fishery |
publishDate |
2021 |
url |
https://orbit.dtu.dk/en/publications/cd569778-bec6-40a4-8ae9-5394700442a5 https://doi.org/10.1016/j.fishres.2021.106088 |
long_lat |
ENVELOPE(65.532,65.532,-70.502,-70.502) |
geographic |
Lied |
geographic_facet |
Lied |
genre |
Phocoena phocoena Turbot |
genre_facet |
Phocoena phocoena Turbot |
op_source |
Kratzer , I M F , Brooks , M E , Bilgin , S , Özdemir , S , Kindt-Larsen , L , Larsen , F & Stepputtis , D 2021 , ' Using acoustically visible gillnets to reduce bycatch of a small cetacean: first pilot trials in a commercial fishery ' , Fisheries Research , vol. 243 , 106088 . https://doi.org/10.1016/j.fishres.2021.106088 |
op_relation |
https://orbit.dtu.dk/en/publications/cd569778-bec6-40a4-8ae9-5394700442a5 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1016/j.fishres.2021.106088 |
container_title |
Fisheries Research |
container_volume |
243 |
container_start_page |
106088 |
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1802649128855928832 |