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dc.contributor.authorLandero, M.
dc.contributor.authorParnum, Iain
dc.contributor.authorParsons, Miles
dc.contributor.authorSalgado-Kent, Chandra
dc.contributor.authorSaunders, Ben
dc.identifier.citationLandero, M. and Parnum, I. and Parsons, M. and Salgado-Kent, C. and Saunders, B. 2016. Integrating echo-sounder and underwater video data for demersal fish assessment, in Acoustics2016: The Second Australasian Acoustical Societies Conference.

Effective management of demersal fish species includes accurate, spatially explicit assessments of their abundance and distribution. Non-extractive techniques, such as echo-sounders and visual census, are of particular importance in no-take marine reserves where direct sampling is restricted. This study is investigating the use of echo-sounders and Baited Remote Underwater stereo-Videos (stereo-BRUVs) in demersal fish assessment. Echo-sounders have the advantage of covering nearly the entire watercolumn and being able to cover vast areas in a relatively short period. However, "ground-truth" data is usually needed to produce species-specific identification and sampling the area close to the seafloor is problematic, particularly for demersal species in complex topography. In contrast, stereo-BRUVs allow identification to species level in most cases, but samples characterise a particular location within the field of view and the area of influence within the bait plume. The combination of co-located bathymetric and habitat maps, with quantifiable acoustic backscatter and species-specific visually ground-truthed relative abundance, holds potential to further these studies and provide a more cost- and labour-efficient sampling regime. The preliminary investigation into the relationship between active acoustic and stereo-BRUVs showed a significant correlation between the relative biomass recorded by the stereo-BRUVs and the acoustic energy recorded by the echosounder.

dc.titleIntegrating echo-sounder and underwater video data for demersal fish assessment
dc.typeConference Paper
dcterms.source.titleProceedings of Acoustics2016 - The Second Australasian Acoustical Societies Conference
dcterms.source.seriesProceedings of Acoustics2016 - The Second Australasian Acoustical Societies Conference
dcterms.source.conferenceAcoustics2016 - The Second Australasian Acoustical Societies Conference
curtin.departmentCentre for Marine Science and Technology
curtin.accessStatusFulltext not available

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