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The impact of trammel nets as an MPA soft bottom monitoring method

2021Journal article Open access
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dc.contributor.authorPriester, C. Robert
dc.contributor.authorMartínez-Ramírez, Lucas
dc.contributor.authorErzini, Karim
dc.contributor.authorAbecasis, David
dc.date.accessioned2021-01-06T20:46:15Z
dc.date.available2021-01-06T20:46:15Z
dc.date.issued2021
dc.description.abstractWith the global increase of marine protected area (MPA) implementation, the need for monitoring and the evaluation of their effectiveness becomes ever more important. Currently there is a severe lack of information about the protection effects of soft-substrate ecosystems. While many different methods have been established for the monitoring of hard-substrate ecosystems, most of these minimally invasive methods prove ineffective for soft- bottom habitats. Information and quantification of the impact of monitoring methods is needed to provide decision makers with the necessary knowledge to choose appropriate and feasible monitoring methods. In this study we quantify the impact of experimental trammel net fishing as a monitoring method of the soft-substrate demersal fish community using the Arrábida MPA (Portugal) as a case study. Over the 14 biannual sampling campaigns (between 2010 and 2019) 21,873 individuals and 5.61 tonnes of fish were caught. The gear is highly effective with an average catch per unit effort higher than reported for commercial fisheries in adjacent areas. When excluding the pelagic species, mortality rates are 41.2% and 30.4% in numbers and biomass, respectively. Most of the dead individuals belong to small, non-protected species with relatively little commercial value while MPA conservation target groups such as Soleidae and Rajidae have high survival rates. Due to its low size- and species-selectivity and the high survival rate of protected valuable species, the trammel net experimental fishing proved to be an effective monitoring method for soft-substrate demersal fish communities. Given their relatively low impact on the local ecosystem experimental trammel nets are a good alternative for areas where nonextractive methods are not effective. Nevertheless, quantification of the impact of other monitoring methods is necessary to enable the determination of the methods with the lowest mortality and impact for future softsubstrate MPA monitoring.pt_PT
dc.description.sponsorshipLIFE06 NAT/P/000192 FCT: UID/Multi/04326/2020; DL 57/2016/CP1361/CT0036; European Maritime and Fisheries Fund INFORBIOMARES: POSEUR-03-2215-FC-000047pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.ecolind.2020.106877pt_PT
dc.identifier.issn1470-160X
dc.identifier.urihttp://hdl.handle.net/10400.1/14939
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectMPA monitoringpt_PT
dc.subjectImpact assessmentpt_PT
dc.subjectSoft-substratept_PT
dc.subjectMarine Reservept_PT
dc.subjectExperimental fishingpt_PT
dc.titleThe impact of trammel nets as an MPA soft bottom monitoring methodpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.startPage106877pt_PT
oaire.citation.titleEcological Indicatorspt_PT
oaire.citation.volume120pt_PT
person.familyNameErzini
person.familyNameAbecasis
person.givenNameKarim
person.givenNameDavid
person.identifier298405
person.identifier.ciencia-idD917-7133-341A
person.identifier.ciencia-id7E1E-B2F7-B966
person.identifier.orcid0000-0002-1411-0126
person.identifier.orcid0000-0002-9802-8153
person.identifier.ridM-5216-2013
person.identifier.ridB-2871-2012
person.identifier.scopus-author-id7004015948
person.identifier.scopus-author-id23017767300
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicatione20f0e2d-3085-4c37-9e98-260dc9faddea
relation.isAuthorOfPublicationef3e9a91-cff1-419d-af31-4bc2800897dd
relation.isAuthorOfPublication.latestForDiscoveryef3e9a91-cff1-419d-af31-4bc2800897dd

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