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dc.contributor.authorJaramillo-Legorreta, Armando
dc.contributor.authorCardenas-Hinojosa, Gustavo
dc.contributor.authorNieto-Garcia, Edwyna
dc.contributor.authorRojas-Bracho, Lorenzo
dc.contributor.authorHoef, Jay Ver
dc.contributor.authorMoore, Jeffrey
dc.contributor.authorTregenza, Nicholas
dc.contributor.authorBarlow, Jay
dc.contributor.authorGerrodette, Tim
dc.contributor.authorThomas, Len
dc.contributor.authorTaylor, Barbara
dc.date.accessioned2016-12-06T10:30:24Z
dc.date.available2016-12-06T10:30:24Z
dc.date.issued2017-02
dc.identifier.citationJaramillo-Legorreta , A , Cardenas-Hinojosa , G , Nieto-Garcia , E , Rojas-Bracho , L , Hoef , J V , Moore , J , Tregenza , N , Barlow , J , Gerrodette , T , Thomas , L & Taylor , B 2017 , ' Passive acoustic monitoring of the decline of Mexico's critically endangered vaquita ' Conservation Biology , vol. 31 , no. 1 , pp. 183-191 . DOI: 10.1111/cobi.12789en
dc.identifier.issn1523-1739
dc.identifier.otherPURE: 243685698
dc.identifier.otherPURE UUID: a2dd4fa1-1e2f-47bd-8e19-a99194c4e7dc
dc.identifier.otherBibtex: urn:0de88fe8feeef85006ad9beeb1778e89
dc.identifier.otherScopus: 85006386968
dc.identifier.urihttp://hdl.handle.net/10023/9937
dc.descriptionDifferent institutions and agencies have provided funding during the development and implementation of the acoustic monitoring program.en
dc.description.abstractThe vaquita (Phocoena sinus) is the world's most endangered marine mammal with ≈245 individuals remaining in 2008. This species of porpoise is endemic to the northern Gulf of California, Mexico, and has historically suffered population declines from unsustainable bycatch in gillnets. An illegal gillnet fishery for an endangered fish, the totoaba (Totoaba macdonaldi), has recently resurged throughout the vaquita's range. The secretive but lucrative wildlife trade with China for totoaba swim bladders has probably increased vaquita bycatch mortality, but by an unknown amount. Precise population monitoring by visual surveys is difficult because vaquitas are inherently hard to see and have now become so rare that sighting rates are very low. However, their echolocation clicks can be identified readily on specialized acoustic detectors. Acoustic detections on an array of 46 moored detectors indicate that vaquita acoustic activity declined by 80% between 2011 and 2015 in the central part of the species’ range. Statistical models estimate an annual rate of decline of 34% (95% Bayesian Credible Interval -48% to -21%). Based on preliminary acoustic monitoring results from 2011–2014 the Government of Mexico enacted and is enforcing an emergency 2-year ban of gillnets throughout the species’ range to prevent extinction, at a cost of $74 million USD to compensate fishers. Developing precise acoustic monitoring methods proved critical to exposing the severity of vaquitas’ decline and emphasizes the need for continual monitoring to effectively manage critically endangered species.en
dc.format.extent9en
dc.language.isoeng
dc.relation.ispartofConservation Biologyen
dc.rightsCopyright 2016 the Author(s). This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.en
dc.subjectExtinctionen
dc.subjectPhocoena sinusen
dc.subjectPopulation declineen
dc.subjectStatistical modelingen
dc.subjectGE Environmental Sciencesen
dc.subjectQA Mathematicsen
dc.subjectQH301 Biologyen
dc.subjectDASen
dc.subject.lccGEen
dc.subject.lccQAen
dc.subject.lccQH301en
dc.titlePassive acoustic monitoring of the decline of Mexico's critically endangered vaquitaen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. Statisticsen
dc.contributor.institutionUniversity of St Andrews. School of Mathematics and Statisticsen
dc.contributor.institutionUniversity of St Andrews. Marine Alliance for Science & Technology Scotlanden
dc.contributor.institutionUniversity of St Andrews. Centre for Research into Ecological & Environmental Modellingen
dc.identifier.doihttps://doi.org/10.1111/cobi.12789
dc.description.statusPeer revieweden


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