Predicting optimal combinations of by‐catch reduction devices in trawl gears: A meta‐analytical approach
Abstract Global efforts to reduce unwanted catches have led to the development of a vast array of by‐catch reduction devices (BRDs), in particular for mixed trawl fisheries. Some of these BRDs could likely benefit from being combined. However, the number of possible combinations would be prohibitive...
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crwiley:10.1111/faf.12428 2024-06-23T07:52:57+00:00 Predicting optimal combinations of by‐catch reduction devices in trawl gears: A meta‐analytical approach Melli, Valentina Herrmann, Bent Karlsen, Junita Diana Feekings, Jordan Paul Krag, Ludvig Ahm European Maritime and Fisheries Fund 2019 http://dx.doi.org/10.1111/faf.12428 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Ffaf.12428 https://onlinelibrary.wiley.com/doi/pdf/10.1111/faf.12428 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/faf.12428 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Fish and Fisheries volume 21, issue 2, page 252-268 ISSN 1467-2960 1467-2979 journal-article 2019 crwiley https://doi.org/10.1111/faf.12428 2024-06-04T06:41:04Z Abstract Global efforts to reduce unwanted catches have led to the development of a vast array of by‐catch reduction devices (BRDs), in particular for mixed trawl fisheries. Some of these BRDs could likely benefit from being combined. However, the number of possible combinations would be prohibitive to be tested experimentally. Therefore, in this study we propose a meta‐analytical approach that combines the data available on BRDs tested independently in a fishery and predict the theoretical selectivity of all possible combinations of those devices. This allows to identify promising BRD combinations, worth experimental investigation and flexible trawl configurations, where the selectivity can be substantially modified by adding or removing one BRD, thus aiding fishermen in adapting to high variability in catch composition and quota availability. To illustrate the approach, we used BRDs developed for the well‐studied Nephrops ( Nephrops norvegicus, Nephropidae) directed mixed trawl fishery in the Skagerrak and Kattegat seas. We predicted the selectivity of 100 BRD combinations for Nephrops , cod ( Gadus morhua, Gadidae) and haddock ( Melanogrammus aeglefinus, Gadidae), compared them in terms of absolute selectivity and performance under realistic catch scenarios, from both single‐ and multispecies perspectives, and identified 15 BRD combinations that could be worth future experimental investigation. The meta‐analytical approach makes best use of existing knowledge and leads to new insights about the potential for improvement and flexibility in trawl selectivity. This could benefit a variety of mixed trawl fisheries and help developing a new generation of more flexible gears, with multiple BRDs integrated in their structure. Article in Journal/Newspaper Gadus morhua Wiley Online Library Kattegat ENVELOPE(9.692,9.692,63.563,63.563) Fish and Fisheries 21 2 252 268 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Global efforts to reduce unwanted catches have led to the development of a vast array of by‐catch reduction devices (BRDs), in particular for mixed trawl fisheries. Some of these BRDs could likely benefit from being combined. However, the number of possible combinations would be prohibitive to be tested experimentally. Therefore, in this study we propose a meta‐analytical approach that combines the data available on BRDs tested independently in a fishery and predict the theoretical selectivity of all possible combinations of those devices. This allows to identify promising BRD combinations, worth experimental investigation and flexible trawl configurations, where the selectivity can be substantially modified by adding or removing one BRD, thus aiding fishermen in adapting to high variability in catch composition and quota availability. To illustrate the approach, we used BRDs developed for the well‐studied Nephrops ( Nephrops norvegicus, Nephropidae) directed mixed trawl fishery in the Skagerrak and Kattegat seas. We predicted the selectivity of 100 BRD combinations for Nephrops , cod ( Gadus morhua, Gadidae) and haddock ( Melanogrammus aeglefinus, Gadidae), compared them in terms of absolute selectivity and performance under realistic catch scenarios, from both single‐ and multispecies perspectives, and identified 15 BRD combinations that could be worth future experimental investigation. The meta‐analytical approach makes best use of existing knowledge and leads to new insights about the potential for improvement and flexibility in trawl selectivity. This could benefit a variety of mixed trawl fisheries and help developing a new generation of more flexible gears, with multiple BRDs integrated in their structure. |
author2 |
European Maritime and Fisheries Fund |
format |
Article in Journal/Newspaper |
author |
Melli, Valentina Herrmann, Bent Karlsen, Junita Diana Feekings, Jordan Paul Krag, Ludvig Ahm |
spellingShingle |
Melli, Valentina Herrmann, Bent Karlsen, Junita Diana Feekings, Jordan Paul Krag, Ludvig Ahm Predicting optimal combinations of by‐catch reduction devices in trawl gears: A meta‐analytical approach |
author_facet |
Melli, Valentina Herrmann, Bent Karlsen, Junita Diana Feekings, Jordan Paul Krag, Ludvig Ahm |
author_sort |
Melli, Valentina |
title |
Predicting optimal combinations of by‐catch reduction devices in trawl gears: A meta‐analytical approach |
title_short |
Predicting optimal combinations of by‐catch reduction devices in trawl gears: A meta‐analytical approach |
title_full |
Predicting optimal combinations of by‐catch reduction devices in trawl gears: A meta‐analytical approach |
title_fullStr |
Predicting optimal combinations of by‐catch reduction devices in trawl gears: A meta‐analytical approach |
title_full_unstemmed |
Predicting optimal combinations of by‐catch reduction devices in trawl gears: A meta‐analytical approach |
title_sort |
predicting optimal combinations of by‐catch reduction devices in trawl gears: a meta‐analytical approach |
publisher |
Wiley |
publishDate |
2019 |
url |
http://dx.doi.org/10.1111/faf.12428 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Ffaf.12428 https://onlinelibrary.wiley.com/doi/pdf/10.1111/faf.12428 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/faf.12428 |
long_lat |
ENVELOPE(9.692,9.692,63.563,63.563) |
geographic |
Kattegat |
geographic_facet |
Kattegat |
genre |
Gadus morhua |
genre_facet |
Gadus morhua |
op_source |
Fish and Fisheries volume 21, issue 2, page 252-268 ISSN 1467-2960 1467-2979 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/faf.12428 |
container_title |
Fish and Fisheries |
container_volume |
21 |
container_issue |
2 |
container_start_page |
252 |
op_container_end_page |
268 |
_version_ |
1802644414855643136 |