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Performing fish counts with a wide-angle camera, a promising approach reducing divers' limitations

2013Journal article Restricted access
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dc.contributor.authorAssis, J.
dc.contributor.authorClaro, B.
dc.contributor.authorRamos, Ana
dc.contributor.authorBoavida, Joana
dc.contributor.authorSerrão, Ester
dc.date.accessioned2014-05-23T12:36:19Z
dc.date.available2014-05-23T12:36:19Z
dc.date.issued2013
dc.date.updated2014-05-21T11:25:02Z
dc.description.abstractVisual standardised methods for census of reef fishes have long been used in fisheries management and biological surveys. However, these tools have inherent sources of bias and the SCUBA divers who perform them are highly constrained in terms of survey time,maximumdepth and frequency of sampling. Alternatives like underwater video are thus being recommended in a wide range of configurations. Yet, all these techniques are still limited in field of view, particularly when compared to the ability of a SCUBA diver performing censuses. In this scope, we evaluated the potential of an underwater wide-angle camera (UWC) to survey fish assemblages by testing it against instantaneous underwater visual census (UVC). Our results showed minimal yet significant differences between methods, mainly because of the camera's loss of resolution when under extreme visibility conditions. Both approaches had the same consistency and ability to detect changes in fish assemblages but, to estimate total species richness, the UWC needed less field effort. Moreover, a SCUBA diver performing census had an effect on fish assemblages which introduced differences of greater magnitude than those found between methods. The removal of the diver effect, the proven ability to detect changes in fish assemblages and the verified gain in field effort, pointed the wide-angle camera as a promising tool to perform census of reef fishes.por
dc.identifier.citationAssis, J.F.; Claro, B.; Ramos, A.; Boavida, J.; Serrão, E.A. Performing fish counts with a wide-angle camera, a promising approach reducing divers' limitations, Journal of Experimental Marine Biology and Ecology, 445, Maio 2013, 93-98, 2013.por
dc.identifier.doihttp://dx.doi.org/10.1016/j.jembe.2013.04.007
dc.identifier.issn0022-0981
dc.identifier.otherAUT: ESE00527;
dc.identifier.urihttp://hdl.handle.net/10400.1/4049
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherElsevierpor
dc.subjectFish surveyspor
dc.subjectUnderwater videopor
dc.subjectUnderwater visual censuspor
dc.subjectWide-angle camerapor
dc.titlePerforming fish counts with a wide-angle camera, a promising approach reducing divers' limitationspor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage98por
oaire.citation.issueMaio 2013por
oaire.citation.startPage93por
oaire.citation.titleJournal of Experimental Marine Biology and Ecologypor
oaire.citation.volume445por
person.familyNameAssis
person.familyNameRamos
person.familyNameboavida
person.familyNameSerrao
person.givenNameJorge
person.givenNameAna
person.givenNamejoana
person.givenNameEster A.
person.identifierC-6686-2012
person.identifier.ciencia-id5C1D-05B6-29F7
person.identifier.ciencia-id761B-F84D-0CF5
person.identifier.ciencia-id191A-5A62-0E81
person.identifier.ciencia-id5B13-B26E-B1EC
person.identifier.orcid0000-0002-6624-4820
person.identifier.orcid0000-0003-1099-4005
person.identifier.orcid0000-0001-5265-2498
person.identifier.orcid0000-0003-1316-658X
person.identifier.ridG-9688-2012
person.identifier.ridM-3815-2013
person.identifier.ridM-5744-2013
person.identifier.scopus-author-id53463298700
person.identifier.scopus-author-id7004093604
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublicationc794f76b-9001-4ac1-913a-bb0f3aab6ef5
relation.isAuthorOfPublication42936018-1328-4fd1-8adb-4d37441727ab
relation.isAuthorOfPublication8ee9f7ac-177e-4a1e-9bda-0edda4919a62
relation.isAuthorOfPublication45ccfe90-155c-4d6f-9e86-8f0fd064005f
relation.isAuthorOfPublication.latestForDiscovery8ee9f7ac-177e-4a1e-9bda-0edda4919a62

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