Bycatch mitigation in the West Greenland lumpfish (Cyclopterus lumpus) fishery using modified gillnets
Bycatch in gillnets is a global issue and mitigation measures that balance target species catch rates, bycatch reduction and fisher support are scarce. In the North Atlantic lumpfish fisheries, bycatch includes marine mammals and seabirds, and there are no permanent technical initiatives to reduce t...
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ftpubmed:oai:pubmedcentral.nih.gov:10073906 2023-05-15T15:55:54+02:00 Bycatch mitigation in the West Greenland lumpfish (Cyclopterus lumpus) fishery using modified gillnets Post, Søren Merkel, Flemming Bak-Jensen, Zita Koch, Christoffer Hedeholm, Rasmus Berg 2023-04-05 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10073906/ https://doi.org/10.1098/rsos.221536 en eng The Royal Society http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10073906/ http://dx.doi.org/10.1098/rsos.221536 © 2023 The Authors. https://creativecommons.org/licenses/by/4.0/Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, provided the original author and source are credited. R Soc Open Sci Ecology Conservation and Global Change Biology Text 2023 ftpubmed https://doi.org/10.1098/rsos.221536 2023-04-09T00:59:44Z Bycatch in gillnets is a global issue and mitigation measures that balance target species catch rates, bycatch reduction and fisher support are scarce. In the North Atlantic lumpfish fisheries, bycatch includes marine mammals and seabirds, and there are no permanent technical initiatives to reduce the bycatch. In the West Greenland fishery, common eider bycatch is several thousand individuals annually. We explored if bycatch in this fishery could be reduced by modifying standard lumpfish gillnets by adding a 45 cm high small-meshed net panel to the bottom part of the net. We tested the nets in combination with standard nets and estimated catch rates in a controlled setting in 2021 and in the commercial fishery in 2022. The modified nets had a 71% reduced bycatch rate for common eider and a 25% reduced catch rate for female lumpfish. A combination of the panel and increased seaweed entanglement was the most likely explanation for the effect. In addition to the effect of the net modification, the common eider bycatch decreased significantly during the season, and we recommend studying the net effect further and exploring the option of postponing the fishing season as a simpler way of reducing bycatch. Text Common Eider Greenland North Atlantic PubMed Central (PMC) Greenland Royal Society Open Science 10 4 |
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English |
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Ecology Conservation and Global Change Biology |
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Ecology Conservation and Global Change Biology Post, Søren Merkel, Flemming Bak-Jensen, Zita Koch, Christoffer Hedeholm, Rasmus Berg Bycatch mitigation in the West Greenland lumpfish (Cyclopterus lumpus) fishery using modified gillnets |
topic_facet |
Ecology Conservation and Global Change Biology |
description |
Bycatch in gillnets is a global issue and mitigation measures that balance target species catch rates, bycatch reduction and fisher support are scarce. In the North Atlantic lumpfish fisheries, bycatch includes marine mammals and seabirds, and there are no permanent technical initiatives to reduce the bycatch. In the West Greenland fishery, common eider bycatch is several thousand individuals annually. We explored if bycatch in this fishery could be reduced by modifying standard lumpfish gillnets by adding a 45 cm high small-meshed net panel to the bottom part of the net. We tested the nets in combination with standard nets and estimated catch rates in a controlled setting in 2021 and in the commercial fishery in 2022. The modified nets had a 71% reduced bycatch rate for common eider and a 25% reduced catch rate for female lumpfish. A combination of the panel and increased seaweed entanglement was the most likely explanation for the effect. In addition to the effect of the net modification, the common eider bycatch decreased significantly during the season, and we recommend studying the net effect further and exploring the option of postponing the fishing season as a simpler way of reducing bycatch. |
format |
Text |
author |
Post, Søren Merkel, Flemming Bak-Jensen, Zita Koch, Christoffer Hedeholm, Rasmus Berg |
author_facet |
Post, Søren Merkel, Flemming Bak-Jensen, Zita Koch, Christoffer Hedeholm, Rasmus Berg |
author_sort |
Post, Søren |
title |
Bycatch mitigation in the West Greenland lumpfish (Cyclopterus lumpus) fishery using modified gillnets |
title_short |
Bycatch mitigation in the West Greenland lumpfish (Cyclopterus lumpus) fishery using modified gillnets |
title_full |
Bycatch mitigation in the West Greenland lumpfish (Cyclopterus lumpus) fishery using modified gillnets |
title_fullStr |
Bycatch mitigation in the West Greenland lumpfish (Cyclopterus lumpus) fishery using modified gillnets |
title_full_unstemmed |
Bycatch mitigation in the West Greenland lumpfish (Cyclopterus lumpus) fishery using modified gillnets |
title_sort |
bycatch mitigation in the west greenland lumpfish (cyclopterus lumpus) fishery using modified gillnets |
publisher |
The Royal Society |
publishDate |
2023 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10073906/ https://doi.org/10.1098/rsos.221536 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Common Eider Greenland North Atlantic |
genre_facet |
Common Eider Greenland North Atlantic |
op_source |
R Soc Open Sci |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10073906/ http://dx.doi.org/10.1098/rsos.221536 |
op_rights |
© 2023 The Authors. https://creativecommons.org/licenses/by/4.0/Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, provided the original author and source are credited. |
op_doi |
https://doi.org/10.1098/rsos.221536 |
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Royal Society Open Science |
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10 |
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4 |
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1766391392669532160 |