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Designing a shipboard line transect survey to estimate cetacean abundance off the Azores archipelago

dc.contributor.authorFaustino, Cláudia E. S.
dc.contributor.authorSilva, Mónica A.
dc.contributor.authorMarques, Tiago A.
dc.contributor.authorThomas, Len
dc.date.accessioned2010-11-03T13:11:43Z
dc.date.available2010-11-03T13:11:43Z
dc.date.issued2010
dc.description.abstractManagement schemes dedicated to the conservation of wildlife populations rely on the effective monitoring of population size, and this may require the accurate and precise estimation of this parameter. Line transect distance sampling can be an effective approach for estimating abundance. Little information is available regarding cetacean abundance in the Azores. This paper had two aims: 1) to design a line transect shipboard survey to estimate the absolute abundance of the most common cetaceans off the Azores; and 2) to provide a set of potential survey effort scenarios to policy makers and environmental managers. Three survey scenarios are assessed, and one detailed survey design is presented. A total of 8,800 km of survey effort is recommended; at this level the expected coefficient of variation of estimates is less than 0.3 for most species. However, if logistic constraints prevent this, at least 5,000 km of survey effort should be used to achieve minimum sample size requirements; this is estimated to take 36 days of effort. It is also recommended to conduct a pilot survey. This would provide more detailed information that could be used to improve the survey design of what would be the first survey of this magnitude ever to be implemented in the Azores.por
dc.identifier.citation"ARQUIPÉLAGO. Life and Marine Sciences". ISSN 0873-4704. Nº 27 (2010): 49-58por
dc.identifier.issn0873-4704
dc.identifier.urihttp://hdl.handle.net/10400.3/669
dc.language.isoengpor
dc.publisherUniversidade dos Açorespor
dc.relation.ispartofseriesCiências Biológicas e Marinhas = Life and Marine Sciences;27
dc.subjectDistance Samplingpor
dc.subjectEffort Scenariospor
dc.subjectLogisticspor
dc.subjectMethodspor
dc.subjectStatistical Robustnesspor
dc.titleDesigning a shipboard line transect survey to estimate cetacean abundance off the Azores archipelagopor
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/POCTI/BSE/38991/2001
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/SFRH/BPD/29841/2006
oaire.citation.endPage58por
oaire.citation.startPage49por
oaire.citation.titleARQUIPÉLAGO. Life and Marine Sciencespor
oaire.fundingStreamPOCTI
oaire.fundingStreamSFRH
project.funder.identifierhttp://doi.org/10.13039/501100001871
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
rcaap.rightsopenAccesspor
rcaap.typearticlepor
relation.isProjectOfPublicationea7f820c-2d01-42dd-87ef-ff3d6f4bdf39
relation.isProjectOfPublicationf9d6dc0a-516a-4e27-94d0-a558ba84ac7a
relation.isProjectOfPublication.latestForDiscoveryf9d6dc0a-516a-4e27-94d0-a558ba84ac7a

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