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dc.contributor.authorMelli, Valentina
dc.contributor.authorHerrmann, Bent
dc.contributor.authorKarlsen, Junita Diana
dc.contributor.authorFeekings, Jordan
dc.contributor.authorKrag, Ludvig Ahm
dc.date.accessioned2019-12-22T22:18:40Z
dc.date.available2019-12-22T22:18:40Z
dc.date.issued2019-12-02
dc.description.abstractGlobal 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 <i>Nephrops</i> (<i>Nephrops norvegicus</i>, Nephropidae) directed mixed trawl fishery in the Skagerrak and Kattegat seas. We predicted the selectivity of 100 BRD combinations for <i>Nephrops</i>, cod (<i>Gadus morhua</i>, Gadidae) and haddock (<i>Melanogrammus aeglefinus</i>, 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.en_US
dc.descriptionThis is the peer reviewed version of the following article: Melli, V., Herrmann, B., Karlsen, J.D., Feekings, J. & Krag, L.A. (2019). Predicting optimal combinations of by‐catch reduction devices in trawl gears: A meta‐analytical approach. <i>Fish and Fisheries</i>, which has been published in final form at <a href=https://doi.org/10.1111/faf.12428>https://doi.org/10.1111/faf.12428</a>. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.en_US
dc.identifier.citationMelli, V., Herrmann, B., Karlsen, J.D., Feekings, J. & Krag, L.A. (2019). Predicting optimal combinations of by‐catch reduction devices in trawl gears: A meta‐analytical approach. <i>Fish and Fisheries</i>. https://doi.org/10.1111/faf.12428en_US
dc.identifier.cristinIDFRIDAID 1757156
dc.identifier.doi10.1111/faf.12428
dc.identifier.issn1467-2960
dc.identifier.issn1467-2979
dc.identifier.urihttps://hdl.handle.net/10037/16980
dc.language.isoengen_US
dc.publisherWileyen_US
dc.relation.journalFish and Fisheries
dc.rights.accessRightsopenAccessen_US
dc.rights.holder© 2019 John Wiley & Sons Ltden_US
dc.subjectVDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fisheries technology: 924en_US
dc.subjectVDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920::Fiskeriteknologi: 924en_US
dc.titlePredicting optimal combinations of by‐catch reduction devices in trawl gears: A meta‐analytical approachen_US
dc.type.versionacceptedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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