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Reducing cetacean interactions with bottom set‐nets and purse seining using acoustic deterrent devices in Southern Iberia

dc.contributor.authorMarçalo, Ana
dc.contributor.authorCarvalho, Flávia
dc.contributor.authorFrade, Magda
dc.contributor.authorBentes, Luis
dc.contributor.authorMonteiro, Pedro
dc.contributor.authorPontes, João
dc.contributor.authorFerreira Alexandre, Teresa Sofia
dc.contributor.authorOliveira, Frederico
dc.contributor.authorKingston, Allen
dc.contributor.authorErzini, Karim
dc.contributor.authorGonçalves, Jorge Manuel Santos
dc.date.accessioned2025-02-27T11:22:54Z
dc.date.available2025-02-27T11:22:54Z
dc.date.issued2025-02
dc.description.abstractIn southern Iberia (NE Atlantic), cetacean bycatch is reported in several fisheries, whereas depredation by bottlenose dolphin (Tursiops truncatus) is commonly observed in bottom set-net fisheries. This study tested the effectiveness of acoustic deterrent devices in discouraging small cetaceans from approaching bottom set-nets and purse seine to reduce interactions. The acoustic deterrent devices used in the study were dolphin deterrent devices and dolphin interactive devices for the bottom set-net fishery to reduce dolphin bycatch and depredation and dolphin deterrent devices in the purse seine fishery to reduce common dolphin (Delphinus delphis) bycatch. Data collection was carried out by at-sea observers and trained fishing vessel crew observers. Hauls with and without acoustic deterrent devices were compared and analysed to investigate differences in catch per unit effort, factors affecting the interaction, probability of interaction and habituation (in bottom set-nets only). In bottom set-nets, the depredation rate was significantly lower and reduced by about 50% in hauls using acoustic deterrent devices. Habituation of the bottlenose dolphins to the devices was observed but was gradual. In the purse seine fishery, common dolphin bycatch was reduced by 100% when using the acoustic deterrent devices. Overall, the results are promising, but the different interaction reduction efficiencies observed between gear types indicate that the potential application of acoustic deterrent devices should be considered on a m & eacute;tier-by-m & eacute;tier basis. Other mitigation measures should be developed, especially for static gears, in collaboration with the fishing sector in an inclusive management approach to reduce direct interactions between fisheries and cetaceans.eng
dc.description.sponsorshipprojects Mar2020- iNOVPESCA (DGRM/MM, MAR2020: MAR-01.03.01-FEAMP-0020; CetAMBICion (EU, DGENV/MSFD 2020) and LIFE Ilhas Barreira (LIFE18/NAT/PT/000927)
dc.identifier.doi10.1002/aqc.70061
dc.identifier.eissn1099-0755
dc.identifier.issn1052-7613
dc.identifier.urihttp://hdl.handle.net/10400.1/26828
dc.language.isoeng
dc.peerreviewedyes
dc.publisherWiley
dc.relationAlgarve Centre for Marine Sciences
dc.relationAlgarve Centre for Marine Sciences
dc.relationCentre for Marine and Environmental Research
dc.relation.ispartofAquatic Conservation: Marine and Freshwater Ecosystems
dc.rights.uriN/A
dc.subjectAcoustic deterrent devices
dc.subjectBottom set-nets
dc.subjectBycatch
dc.subjectCetaceans
dc.subjectDepredation
dc.subjectHabituation
dc.subjectMitigation
dc.subjectPurse seine
dc.subjectSouthern Iberia
dc.titleReducing cetacean interactions with bottom set‐nets and purse seining using acoustic deterrent devices in Southern Iberiaeng
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleAlgarve Centre for Marine Sciences
oaire.awardTitleAlgarve Centre for Marine Sciences
oaire.awardTitleCentre for Marine and Environmental Research
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04326%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F04326%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0101%2F2020/PT
oaire.citation.issue2
oaire.citation.startPagee70061
oaire.citation.titleAquatic Conservation: Marine and Freshwater Ecosystems
oaire.citation.volume35
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameMarçalo
person.familyNameCarvalho
person.familyNameFrade
person.familyNameBentes
person.familyNameMonteiro
person.familyNamePontes
person.familyNameFerreira Alexandre
person.familyNameOliveira
person.familyNameErzini
person.familyNameGonçalves
person.givenNameAna
person.givenNameFlávia
person.givenNameMagda
person.givenNameLuis
person.givenNamePedro
person.givenNameJoão
person.givenNameTeresa Sofia
person.givenNameFrederico
person.givenNameKarim
person.givenNameJorge Manuel Santos
person.identifierR-000-JHM
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person.identifier.ridD-5057-2009
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person.identifier.ridM-5216-2013
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project.funder.identifierhttp://doi.org/10.13039/501100001871
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project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
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